2255 lines
76 KiB
Ruby
2255 lines
76 KiB
Ruby
require "active_support/core_ext/hash/slice"
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require "active_support/core_ext/enumerable"
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require "active_support/core_ext/array/extract_options"
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require "active_support/core_ext/regexp"
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require "action_dispatch/routing/redirection"
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require "action_dispatch/routing/endpoint"
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module ActionDispatch
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module Routing
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class Mapper
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URL_OPTIONS = [:protocol, :subdomain, :domain, :host, :port]
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class Constraints < Routing::Endpoint #:nodoc:
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attr_reader :app, :constraints
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SERVE = ->(app, req) { app.serve req }
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CALL = ->(app, req) { app.call req.env }
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def initialize(app, constraints, strategy)
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# Unwrap Constraints objects. I don't actually think it's possible
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# to pass a Constraints object to this constructor, but there were
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# multiple places that kept testing children of this object. I
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# *think* they were just being defensive, but I have no idea.
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if app.is_a?(self.class)
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constraints += app.constraints
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app = app.app
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end
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@strategy = strategy
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@app, @constraints, = app, constraints
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end
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def dispatcher?; @strategy == SERVE; end
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def matches?(req)
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@constraints.all? do |constraint|
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(constraint.respond_to?(:matches?) && constraint.matches?(req)) ||
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(constraint.respond_to?(:call) && constraint.call(*constraint_args(constraint, req)))
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end
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end
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def serve(req)
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return [ 404, { "X-Cascade" => "pass" }, [] ] unless matches?(req)
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@strategy.call @app, req
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end
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private
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def constraint_args(constraint, request)
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constraint.arity == 1 ? [request] : [request.path_parameters, request]
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end
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end
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class Mapping #:nodoc:
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ANCHOR_CHARACTERS_REGEX = %r{\A(\\A|\^)|(\\Z|\\z|\$)\Z}
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OPTIONAL_FORMAT_REGEX = %r{(?:\(\.:format\)+|\.:format|/)\Z}
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attr_reader :requirements, :defaults
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attr_reader :to, :default_controller, :default_action
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attr_reader :required_defaults, :ast
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def self.build(scope, set, ast, controller, default_action, to, via, formatted, options_constraints, anchor, options)
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options = scope[:options].merge(options) if scope[:options]
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defaults = (scope[:defaults] || {}).dup
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scope_constraints = scope[:constraints] || {}
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new set, ast, defaults, controller, default_action, scope[:module], to, formatted, scope_constraints, scope[:blocks] || [], via, options_constraints, anchor, options
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end
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def self.check_via(via)
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if via.empty?
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msg = "You should not use the `match` method in your router without specifying an HTTP method.\n" \
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"If you want to expose your action to both GET and POST, add `via: [:get, :post]` option.\n" \
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"If you want to expose your action to GET, use `get` in the router:\n" \
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" Instead of: match \"controller#action\"\n" \
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" Do: get \"controller#action\""
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raise ArgumentError, msg
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end
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via
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end
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def self.normalize_path(path, format)
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path = Mapper.normalize_path(path)
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if format == true
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"#{path}.:format"
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elsif optional_format?(path, format)
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"#{path}(.:format)"
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else
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path
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end
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end
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def self.optional_format?(path, format)
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format != false && path !~ OPTIONAL_FORMAT_REGEX
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end
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def initialize(set, ast, defaults, controller, default_action, modyoule, to, formatted, scope_constraints, blocks, via, options_constraints, anchor, options)
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@defaults = defaults
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@set = set
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@to = to
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@default_controller = controller
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@default_action = default_action
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@ast = ast
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@anchor = anchor
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@via = via
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@internal = options.delete(:internal)
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path_params = ast.find_all(&:symbol?).map(&:to_sym)
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options = add_wildcard_options(options, formatted, ast)
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options = normalize_options!(options, path_params, modyoule)
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split_options = constraints(options, path_params)
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constraints = scope_constraints.merge Hash[split_options[:constraints] || []]
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if options_constraints.is_a?(Hash)
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@defaults = Hash[options_constraints.find_all { |key, default|
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URL_OPTIONS.include?(key) && (String === default || Integer === default)
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}].merge @defaults
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@blocks = blocks
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constraints.merge! options_constraints
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else
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@blocks = blocks(options_constraints)
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end
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requirements, conditions = split_constraints path_params, constraints
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verify_regexp_requirements requirements.map(&:last).grep(Regexp)
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formats = normalize_format(formatted)
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@requirements = formats[:requirements].merge Hash[requirements]
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@conditions = Hash[conditions]
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@defaults = formats[:defaults].merge(@defaults).merge(normalize_defaults(options))
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if path_params.include?(:action) && !@requirements.key?(:action)
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@defaults[:action] ||= "index"
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end
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@required_defaults = (split_options[:required_defaults] || []).map(&:first)
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end
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def make_route(name, precedence)
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route = Journey::Route.new(name,
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application,
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path,
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conditions,
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required_defaults,
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defaults,
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request_method,
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precedence,
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@internal)
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route
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end
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def application
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app(@blocks)
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end
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def path
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build_path @ast, requirements, @anchor
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end
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def conditions
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build_conditions @conditions, @set.request_class
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end
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def build_conditions(current_conditions, request_class)
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conditions = current_conditions.dup
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conditions.keep_if do |k, _|
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request_class.public_method_defined?(k)
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end
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end
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private :build_conditions
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def request_method
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@via.map { |x| Journey::Route.verb_matcher(x) }
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end
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private :request_method
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JOINED_SEPARATORS = SEPARATORS.join # :nodoc:
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def build_path(ast, requirements, anchor)
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pattern = Journey::Path::Pattern.new(ast, requirements, JOINED_SEPARATORS, anchor)
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# Find all the symbol nodes that are adjacent to literal nodes and alter
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# the regexp so that Journey will partition them into custom routes.
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ast.find_all { |node|
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next unless node.cat?
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if node.left.literal? && node.right.symbol?
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symbol = node.right
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elsif node.left.literal? && node.right.cat? && node.right.left.symbol?
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symbol = node.right.left
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elsif node.left.symbol? && node.right.literal?
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symbol = node.left
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elsif node.left.symbol? && node.right.cat? && node.right.left.literal?
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symbol = node.left
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else
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next
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end
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if symbol
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symbol.regexp = /(?:#{Regexp.union(symbol.regexp, '-')})+/
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end
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}
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pattern
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end
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private :build_path
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private
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def add_wildcard_options(options, formatted, path_ast)
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# Add a constraint for wildcard route to make it non-greedy and match the
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# optional format part of the route by default
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if formatted != false
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path_ast.grep(Journey::Nodes::Star).each_with_object({}) { |node, hash|
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hash[node.name.to_sym] ||= /.+?/
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}.merge options
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else
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options
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end
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end
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def normalize_options!(options, path_params, modyoule)
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if path_params.include?(:controller)
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raise ArgumentError, ":controller segment is not allowed within a namespace block" if modyoule
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# Add a default constraint for :controller path segments that matches namespaced
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# controllers with default routes like :controller/:action/:id(.:format), e.g:
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# GET /admin/products/show/1
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# => { controller: 'admin/products', action: 'show', id: '1' }
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options[:controller] ||= /.+?/
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end
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if to.respond_to?(:action) || to.respond_to?(:call)
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options
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else
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to_endpoint = split_to to
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controller = to_endpoint[0] || default_controller
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action = to_endpoint[1] || default_action
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controller = add_controller_module(controller, modyoule)
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options.merge! check_controller_and_action(path_params, controller, action)
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end
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end
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def split_constraints(path_params, constraints)
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constraints.partition do |key, requirement|
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path_params.include?(key) || key == :controller
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end
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end
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def normalize_format(formatted)
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case formatted
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when true
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{ requirements: { format: /.+/ },
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defaults: {} }
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when Regexp
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{ requirements: { format: formatted },
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defaults: { format: nil } }
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when String
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{ requirements: { format: Regexp.compile(formatted) },
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defaults: { format: formatted } }
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else
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{ requirements: {}, defaults: {} }
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end
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end
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def verify_regexp_requirements(requirements)
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requirements.each do |requirement|
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if requirement.source =~ ANCHOR_CHARACTERS_REGEX
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raise ArgumentError, "Regexp anchor characters are not allowed in routing requirements: #{requirement.inspect}"
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end
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if requirement.multiline?
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raise ArgumentError, "Regexp multiline option is not allowed in routing requirements: #{requirement.inspect}"
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end
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end
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end
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def normalize_defaults(options)
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Hash[options.reject { |_, default| Regexp === default }]
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end
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def app(blocks)
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if to.respond_to?(:action)
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Routing::RouteSet::StaticDispatcher.new to
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elsif to.respond_to?(:call)
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Constraints.new(to, blocks, Constraints::CALL)
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elsif blocks.any?
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Constraints.new(dispatcher(defaults.key?(:controller)), blocks, Constraints::SERVE)
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else
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dispatcher(defaults.key?(:controller))
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end
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end
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def check_controller_and_action(path_params, controller, action)
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hash = check_part(:controller, controller, path_params, {}) do |part|
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translate_controller(part) {
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message = "'#{part}' is not a supported controller name. This can lead to potential routing problems."
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message << " See http://guides.rubyonrails.org/routing.html#specifying-a-controller-to-use"
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raise ArgumentError, message
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}
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end
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check_part(:action, action, path_params, hash) { |part|
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part.is_a?(Regexp) ? part : part.to_s
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}
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end
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def check_part(name, part, path_params, hash)
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if part
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hash[name] = yield(part)
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else
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unless path_params.include?(name)
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message = "Missing :#{name} key on routes definition, please check your routes."
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raise ArgumentError, message
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end
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end
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hash
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end
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def split_to(to)
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if to =~ /#/
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to.split("#")
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else
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[]
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end
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end
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def add_controller_module(controller, modyoule)
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if modyoule && !controller.is_a?(Regexp)
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if controller =~ %r{\A/}
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controller[1..-1]
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else
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[modyoule, controller].compact.join("/")
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end
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else
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controller
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end
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end
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def translate_controller(controller)
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return controller if Regexp === controller
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return controller.to_s if controller =~ /\A[a-z_0-9][a-z_0-9\/]*\z/
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yield
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end
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def blocks(callable_constraint)
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unless callable_constraint.respond_to?(:call) || callable_constraint.respond_to?(:matches?)
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raise ArgumentError, "Invalid constraint: #{callable_constraint.inspect} must respond to :call or :matches?"
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end
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[callable_constraint]
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end
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def constraints(options, path_params)
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options.group_by do |key, option|
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if Regexp === option
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:constraints
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else
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if path_params.include?(key)
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:path_params
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else
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:required_defaults
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end
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end
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end
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end
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def dispatcher(raise_on_name_error)
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Routing::RouteSet::Dispatcher.new raise_on_name_error
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end
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end
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# Invokes Journey::Router::Utils.normalize_path and ensure that
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# (:locale) becomes (/:locale) instead of /(:locale). Except
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# for root cases, where the latter is the correct one.
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def self.normalize_path(path)
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path = Journey::Router::Utils.normalize_path(path)
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path.gsub!(%r{/(\(+)/?}, '\1/') unless path =~ %r{^/\(+[^)]+\)$}
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path
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end
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def self.normalize_name(name)
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normalize_path(name)[1..-1].tr("/", "_")
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end
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module Base
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# Matches a url pattern to one or more routes.
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#
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# You should not use the +match+ method in your router
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# without specifying an HTTP method.
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#
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# If you want to expose your action to both GET and POST, use:
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#
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# # sets :controller, :action and :id in params
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# match ':controller/:action/:id', via: [:get, :post]
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#
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# Note that +:controller+, +:action+ and +:id+ are interpreted as url
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# query parameters and thus available through +params+ in an action.
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#
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# If you want to expose your action to GET, use +get+ in the router:
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#
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# Instead of:
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#
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# match ":controller/:action/:id"
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#
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# Do:
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#
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# get ":controller/:action/:id"
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#
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# Two of these symbols are special, +:controller+ maps to the controller
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# and +:action+ to the controller's action. A pattern can also map
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# wildcard segments (globs) to params:
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#
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# get 'songs/*category/:title', to: 'songs#show'
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#
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# # 'songs/rock/classic/stairway-to-heaven' sets
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# # params[:category] = 'rock/classic'
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# # params[:title] = 'stairway-to-heaven'
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#
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# To match a wildcard parameter, it must have a name assigned to it.
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# Without a variable name to attach the glob parameter to, the route
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# can't be parsed.
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#
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# When a pattern points to an internal route, the route's +:action+ and
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# +:controller+ should be set in options or hash shorthand. Examples:
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#
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# match 'photos/:id' => 'photos#show', via: :get
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# match 'photos/:id', to: 'photos#show', via: :get
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# match 'photos/:id', controller: 'photos', action: 'show', via: :get
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#
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# A pattern can also point to a +Rack+ endpoint i.e. anything that
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# responds to +call+:
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#
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# match 'photos/:id', to: -> (hash) { [200, {}, ["Coming soon"]] }, via: :get
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# match 'photos/:id', to: PhotoRackApp, via: :get
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# # Yes, controller actions are just rack endpoints
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# match 'photos/:id', to: PhotosController.action(:show), via: :get
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#
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# Because requesting various HTTP verbs with a single action has security
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# implications, you must either specify the actions in
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# the via options or use one of the HttpHelpers[rdoc-ref:HttpHelpers]
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# instead +match+
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#
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# === Options
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#
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# Any options not seen here are passed on as params with the url.
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#
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# [:controller]
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# The route's controller.
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#
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# [:action]
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# The route's action.
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#
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# [:param]
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# Overrides the default resource identifier +:id+ (name of the
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# dynamic segment used to generate the routes).
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# You can access that segment from your controller using
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# <tt>params[<:param>]</tt>.
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# In your router:
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#
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# resources :user, param: :name
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#
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# You can override <tt>ActiveRecord::Base#to_param</tt> of a related
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# model to construct a URL:
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#
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# class User < ActiveRecord::Base
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# def to_param
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# name
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# end
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# end
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#
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# user = User.find_by(name: 'Phusion')
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# user_path(user) # => "/users/Phusion"
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#
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# [:path]
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# The path prefix for the routes.
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#
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# [:module]
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# The namespace for :controller.
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#
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|
# match 'path', to: 'c#a', module: 'sekret', controller: 'posts', via: :get
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# # => Sekret::PostsController
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#
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# See <tt>Scoping#namespace</tt> for its scope equivalent.
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#
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# [:as]
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# The name used to generate routing helpers.
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#
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# [:via]
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# Allowed HTTP verb(s) for route.
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#
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# match 'path', to: 'c#a', via: :get
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# match 'path', to: 'c#a', via: [:get, :post]
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# match 'path', to: 'c#a', via: :all
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#
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# [:to]
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# Points to a +Rack+ endpoint. Can be an object that responds to
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# +call+ or a string representing a controller's action.
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|
#
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# match 'path', to: 'controller#action', via: :get
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# match 'path', to: -> (env) { [200, {}, ["Success!"]] }, via: :get
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# match 'path', to: RackApp, via: :get
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#
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# [:on]
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# Shorthand for wrapping routes in a specific RESTful context. Valid
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|
# values are +:member+, +:collection+, and +:new+. Only use within
|
|
# <tt>resource(s)</tt> block. For example:
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|
#
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# resource :bar do
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# match 'foo', to: 'c#a', on: :member, via: [:get, :post]
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# end
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|
#
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# Is equivalent to:
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#
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# resource :bar do
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# member do
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# match 'foo', to: 'c#a', via: [:get, :post]
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# end
|
|
# end
|
|
#
|
|
# [:constraints]
|
|
# Constrains parameters with a hash of regular expressions
|
|
# or an object that responds to <tt>matches?</tt>. In addition, constraints
|
|
# other than path can also be specified with any object
|
|
# that responds to <tt>===</tt> (eg. String, Array, Range, etc.).
|
|
#
|
|
# match 'path/:id', constraints: { id: /[A-Z]\d{5}/ }, via: :get
|
|
#
|
|
# match 'json_only', constraints: { format: 'json' }, via: :get
|
|
#
|
|
# class Whitelist
|
|
# def matches?(request) request.remote_ip == '1.2.3.4' end
|
|
# end
|
|
# match 'path', to: 'c#a', constraints: Whitelist.new, via: :get
|
|
#
|
|
# See <tt>Scoping#constraints</tt> for more examples with its scope
|
|
# equivalent.
|
|
#
|
|
# [:defaults]
|
|
# Sets defaults for parameters
|
|
#
|
|
# # Sets params[:format] to 'jpg' by default
|
|
# match 'path', to: 'c#a', defaults: { format: 'jpg' }, via: :get
|
|
#
|
|
# See <tt>Scoping#defaults</tt> for its scope equivalent.
|
|
#
|
|
# [:anchor]
|
|
# Boolean to anchor a <tt>match</tt> pattern. Default is true. When set to
|
|
# false, the pattern matches any request prefixed with the given path.
|
|
#
|
|
# # Matches any request starting with 'path'
|
|
# match 'path', to: 'c#a', anchor: false, via: :get
|
|
#
|
|
# [:format]
|
|
# Allows you to specify the default value for optional +format+
|
|
# segment or disable it by supplying +false+.
|
|
def match(path, options = nil)
|
|
end
|
|
|
|
# Mount a Rack-based application to be used within the application.
|
|
#
|
|
# mount SomeRackApp, at: "some_route"
|
|
#
|
|
# Alternatively:
|
|
#
|
|
# mount(SomeRackApp => "some_route")
|
|
#
|
|
# For options, see +match+, as +mount+ uses it internally.
|
|
#
|
|
# All mounted applications come with routing helpers to access them.
|
|
# These are named after the class specified, so for the above example
|
|
# the helper is either +some_rack_app_path+ or +some_rack_app_url+.
|
|
# To customize this helper's name, use the +:as+ option:
|
|
#
|
|
# mount(SomeRackApp => "some_route", as: "exciting")
|
|
#
|
|
# This will generate the +exciting_path+ and +exciting_url+ helpers
|
|
# which can be used to navigate to this mounted app.
|
|
def mount(app, options = nil)
|
|
if options
|
|
path = options.delete(:at)
|
|
elsif Hash === app
|
|
options = app
|
|
app, path = options.find { |k, _| k.respond_to?(:call) }
|
|
options.delete(app) if app
|
|
end
|
|
|
|
raise ArgumentError, "A rack application must be specified" unless app.respond_to?(:call)
|
|
raise ArgumentError, <<-MSG.strip_heredoc unless path
|
|
Must be called with mount point
|
|
|
|
mount SomeRackApp, at: "some_route"
|
|
or
|
|
mount(SomeRackApp => "some_route")
|
|
MSG
|
|
|
|
rails_app = rails_app? app
|
|
options[:as] ||= app_name(app, rails_app)
|
|
|
|
target_as = name_for_action(options[:as], path)
|
|
options[:via] ||= :all
|
|
|
|
match(path, options.merge(to: app, anchor: false, format: false))
|
|
|
|
define_generate_prefix(app, target_as) if rails_app
|
|
self
|
|
end
|
|
|
|
def default_url_options=(options)
|
|
@set.default_url_options = options
|
|
end
|
|
alias_method :default_url_options, :default_url_options=
|
|
|
|
def with_default_scope(scope, &block)
|
|
scope(scope) do
|
|
instance_exec(&block)
|
|
end
|
|
end
|
|
|
|
# Query if the following named route was already defined.
|
|
def has_named_route?(name)
|
|
@set.named_routes.key? name
|
|
end
|
|
|
|
private
|
|
def rails_app?(app)
|
|
app.is_a?(Class) && app < Rails::Railtie
|
|
end
|
|
|
|
def app_name(app, rails_app)
|
|
if rails_app
|
|
app.railtie_name
|
|
elsif app.is_a?(Class)
|
|
class_name = app.name
|
|
ActiveSupport::Inflector.underscore(class_name).tr("/", "_")
|
|
end
|
|
end
|
|
|
|
def define_generate_prefix(app, name)
|
|
_route = @set.named_routes.get name
|
|
_routes = @set
|
|
_url_helpers = @set.url_helpers
|
|
|
|
script_namer = ->(options) do
|
|
prefix_options = options.slice(*_route.segment_keys)
|
|
prefix_options[:relative_url_root] = "".freeze
|
|
|
|
if options[:_recall]
|
|
prefix_options.reverse_merge!(options[:_recall].slice(*_route.segment_keys))
|
|
end
|
|
|
|
# We must actually delete prefix segment keys to avoid passing them to next url_for.
|
|
_route.segment_keys.each { |k| options.delete(k) }
|
|
_url_helpers.send("#{name}_path", prefix_options)
|
|
end
|
|
|
|
app.routes.define_mounted_helper(name, script_namer)
|
|
|
|
app.routes.extend Module.new {
|
|
def optimize_routes_generation?; false; end
|
|
|
|
define_method :find_script_name do |options|
|
|
if options.key? :script_name
|
|
super(options)
|
|
else
|
|
script_namer.call(options)
|
|
end
|
|
end
|
|
}
|
|
end
|
|
end
|
|
|
|
module HttpHelpers
|
|
# Define a route that only recognizes HTTP GET.
|
|
# For supported arguments, see match[rdoc-ref:Base#match]
|
|
#
|
|
# get 'bacon', to: 'food#bacon'
|
|
def get(*args, &block)
|
|
map_method(:get, args, &block)
|
|
end
|
|
|
|
# Define a route that only recognizes HTTP POST.
|
|
# For supported arguments, see match[rdoc-ref:Base#match]
|
|
#
|
|
# post 'bacon', to: 'food#bacon'
|
|
def post(*args, &block)
|
|
map_method(:post, args, &block)
|
|
end
|
|
|
|
# Define a route that only recognizes HTTP PATCH.
|
|
# For supported arguments, see match[rdoc-ref:Base#match]
|
|
#
|
|
# patch 'bacon', to: 'food#bacon'
|
|
def patch(*args, &block)
|
|
map_method(:patch, args, &block)
|
|
end
|
|
|
|
# Define a route that only recognizes HTTP PUT.
|
|
# For supported arguments, see match[rdoc-ref:Base#match]
|
|
#
|
|
# put 'bacon', to: 'food#bacon'
|
|
def put(*args, &block)
|
|
map_method(:put, args, &block)
|
|
end
|
|
|
|
# Define a route that only recognizes HTTP DELETE.
|
|
# For supported arguments, see match[rdoc-ref:Base#match]
|
|
#
|
|
# delete 'broccoli', to: 'food#broccoli'
|
|
def delete(*args, &block)
|
|
map_method(:delete, args, &block)
|
|
end
|
|
|
|
private
|
|
def map_method(method, args, &block)
|
|
options = args.extract_options!
|
|
options[:via] = method
|
|
match(*args, options, &block)
|
|
self
|
|
end
|
|
end
|
|
|
|
# You may wish to organize groups of controllers under a namespace.
|
|
# Most commonly, you might group a number of administrative controllers
|
|
# under an +admin+ namespace. You would place these controllers under
|
|
# the <tt>app/controllers/admin</tt> directory, and you can group them
|
|
# together in your router:
|
|
#
|
|
# namespace "admin" do
|
|
# resources :posts, :comments
|
|
# end
|
|
#
|
|
# This will create a number of routes for each of the posts and comments
|
|
# controller. For <tt>Admin::PostsController</tt>, Rails will create:
|
|
#
|
|
# GET /admin/posts
|
|
# GET /admin/posts/new
|
|
# POST /admin/posts
|
|
# GET /admin/posts/1
|
|
# GET /admin/posts/1/edit
|
|
# PATCH/PUT /admin/posts/1
|
|
# DELETE /admin/posts/1
|
|
#
|
|
# If you want to route /posts (without the prefix /admin) to
|
|
# <tt>Admin::PostsController</tt>, you could use
|
|
#
|
|
# scope module: "admin" do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# or, for a single case
|
|
#
|
|
# resources :posts, module: "admin"
|
|
#
|
|
# If you want to route /admin/posts to +PostsController+
|
|
# (without the <tt>Admin::</tt> module prefix), you could use
|
|
#
|
|
# scope "/admin" do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# or, for a single case
|
|
#
|
|
# resources :posts, path: "/admin/posts"
|
|
#
|
|
# In each of these cases, the named routes remain the same as if you did
|
|
# not use scope. In the last case, the following paths map to
|
|
# +PostsController+:
|
|
#
|
|
# GET /admin/posts
|
|
# GET /admin/posts/new
|
|
# POST /admin/posts
|
|
# GET /admin/posts/1
|
|
# GET /admin/posts/1/edit
|
|
# PATCH/PUT /admin/posts/1
|
|
# DELETE /admin/posts/1
|
|
module Scoping
|
|
# Scopes a set of routes to the given default options.
|
|
#
|
|
# Take the following route definition as an example:
|
|
#
|
|
# scope path: ":account_id", as: "account" do
|
|
# resources :projects
|
|
# end
|
|
#
|
|
# This generates helpers such as +account_projects_path+, just like +resources+ does.
|
|
# The difference here being that the routes generated are like /:account_id/projects,
|
|
# rather than /accounts/:account_id/projects.
|
|
#
|
|
# === Options
|
|
#
|
|
# Takes same options as <tt>Base#match</tt> and <tt>Resources#resources</tt>.
|
|
#
|
|
# # route /posts (without the prefix /admin) to <tt>Admin::PostsController</tt>
|
|
# scope module: "admin" do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# # prefix the posts resource's requests with '/admin'
|
|
# scope path: "/admin" do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# # prefix the routing helper name: +sekret_posts_path+ instead of +posts_path+
|
|
# scope as: "sekret" do
|
|
# resources :posts
|
|
# end
|
|
def scope(*args)
|
|
options = args.extract_options!.dup
|
|
scope = {}
|
|
|
|
options[:path] = args.flatten.join("/") if args.any?
|
|
options[:constraints] ||= {}
|
|
|
|
unless nested_scope?
|
|
options[:shallow_path] ||= options[:path] if options.key?(:path)
|
|
options[:shallow_prefix] ||= options[:as] if options.key?(:as)
|
|
end
|
|
|
|
if options[:constraints].is_a?(Hash)
|
|
defaults = options[:constraints].select do |k, v|
|
|
URL_OPTIONS.include?(k) && (v.is_a?(String) || v.is_a?(Integer))
|
|
end
|
|
|
|
options[:defaults] = defaults.merge(options[:defaults] || {})
|
|
else
|
|
block, options[:constraints] = options[:constraints], {}
|
|
end
|
|
|
|
if options.key?(:only) || options.key?(:except)
|
|
scope[:action_options] = { only: options.delete(:only),
|
|
except: options.delete(:except) }
|
|
end
|
|
|
|
if options.key? :anchor
|
|
raise ArgumentError, "anchor is ignored unless passed to `match`"
|
|
end
|
|
|
|
@scope.options.each do |option|
|
|
if option == :blocks
|
|
value = block
|
|
elsif option == :options
|
|
value = options
|
|
else
|
|
value = options.delete(option) { POISON }
|
|
end
|
|
|
|
unless POISON == value
|
|
scope[option] = send("merge_#{option}_scope", @scope[option], value)
|
|
end
|
|
end
|
|
|
|
@scope = @scope.new scope
|
|
yield
|
|
self
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
POISON = Object.new # :nodoc:
|
|
|
|
# Scopes routes to a specific controller
|
|
#
|
|
# controller "food" do
|
|
# match "bacon", action: :bacon, via: :get
|
|
# end
|
|
def controller(controller)
|
|
@scope = @scope.new(controller: controller)
|
|
yield
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
# Scopes routes to a specific namespace. For example:
|
|
#
|
|
# namespace :admin do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# This generates the following routes:
|
|
#
|
|
# admin_posts GET /admin/posts(.:format) admin/posts#index
|
|
# admin_posts POST /admin/posts(.:format) admin/posts#create
|
|
# new_admin_post GET /admin/posts/new(.:format) admin/posts#new
|
|
# edit_admin_post GET /admin/posts/:id/edit(.:format) admin/posts#edit
|
|
# admin_post GET /admin/posts/:id(.:format) admin/posts#show
|
|
# admin_post PATCH/PUT /admin/posts/:id(.:format) admin/posts#update
|
|
# admin_post DELETE /admin/posts/:id(.:format) admin/posts#destroy
|
|
#
|
|
# === Options
|
|
#
|
|
# The +:path+, +:as+, +:module+, +:shallow_path+ and +:shallow_prefix+
|
|
# options all default to the name of the namespace.
|
|
#
|
|
# For options, see <tt>Base#match</tt>. For +:shallow_path+ option, see
|
|
# <tt>Resources#resources</tt>.
|
|
#
|
|
# # accessible through /sekret/posts rather than /admin/posts
|
|
# namespace :admin, path: "sekret" do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# # maps to <tt>Sekret::PostsController</tt> rather than <tt>Admin::PostsController</tt>
|
|
# namespace :admin, module: "sekret" do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# # generates +sekret_posts_path+ rather than +admin_posts_path+
|
|
# namespace :admin, as: "sekret" do
|
|
# resources :posts
|
|
# end
|
|
def namespace(path, options = {})
|
|
path = path.to_s
|
|
|
|
defaults = {
|
|
module: path,
|
|
as: options.fetch(:as, path),
|
|
shallow_path: options.fetch(:path, path),
|
|
shallow_prefix: options.fetch(:as, path)
|
|
}
|
|
|
|
path_scope(options.delete(:path) { path }) do
|
|
scope(defaults.merge!(options)) { yield }
|
|
end
|
|
end
|
|
|
|
# === Parameter Restriction
|
|
# Allows you to constrain the nested routes based on a set of rules.
|
|
# For instance, in order to change the routes to allow for a dot character in the +id+ parameter:
|
|
#
|
|
# constraints(id: /\d+\.\d+/) do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# Now routes such as +/posts/1+ will no longer be valid, but +/posts/1.1+ will be.
|
|
# The +id+ parameter must match the constraint passed in for this example.
|
|
#
|
|
# You may use this to also restrict other parameters:
|
|
#
|
|
# resources :posts do
|
|
# constraints(post_id: /\d+\.\d+/) do
|
|
# resources :comments
|
|
# end
|
|
# end
|
|
#
|
|
# === Restricting based on IP
|
|
#
|
|
# Routes can also be constrained to an IP or a certain range of IP addresses:
|
|
#
|
|
# constraints(ip: /192\.168\.\d+\.\d+/) do
|
|
# resources :posts
|
|
# end
|
|
#
|
|
# Any user connecting from the 192.168.* range will be able to see this resource,
|
|
# where as any user connecting outside of this range will be told there is no such route.
|
|
#
|
|
# === Dynamic request matching
|
|
#
|
|
# Requests to routes can be constrained based on specific criteria:
|
|
#
|
|
# constraints(-> (req) { req.env["HTTP_USER_AGENT"] =~ /iPhone/ }) do
|
|
# resources :iphones
|
|
# end
|
|
#
|
|
# You are able to move this logic out into a class if it is too complex for routes.
|
|
# This class must have a +matches?+ method defined on it which either returns +true+
|
|
# if the user should be given access to that route, or +false+ if the user should not.
|
|
#
|
|
# class Iphone
|
|
# def self.matches?(request)
|
|
# request.env["HTTP_USER_AGENT"] =~ /iPhone/
|
|
# end
|
|
# end
|
|
#
|
|
# An expected place for this code would be +lib/constraints+.
|
|
#
|
|
# This class is then used like this:
|
|
#
|
|
# constraints(Iphone) do
|
|
# resources :iphones
|
|
# end
|
|
def constraints(constraints = {})
|
|
scope(constraints: constraints) { yield }
|
|
end
|
|
|
|
# Allows you to set default parameters for a route, such as this:
|
|
# defaults id: 'home' do
|
|
# match 'scoped_pages/(:id)', to: 'pages#show'
|
|
# end
|
|
# Using this, the +:id+ parameter here will default to 'home'.
|
|
def defaults(defaults = {})
|
|
@scope = @scope.new(defaults: merge_defaults_scope(@scope[:defaults], defaults))
|
|
yield
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
private
|
|
def merge_path_scope(parent, child)
|
|
Mapper.normalize_path("#{parent}/#{child}")
|
|
end
|
|
|
|
def merge_shallow_path_scope(parent, child)
|
|
Mapper.normalize_path("#{parent}/#{child}")
|
|
end
|
|
|
|
def merge_as_scope(parent, child)
|
|
parent ? "#{parent}_#{child}" : child
|
|
end
|
|
|
|
def merge_shallow_prefix_scope(parent, child)
|
|
parent ? "#{parent}_#{child}" : child
|
|
end
|
|
|
|
def merge_module_scope(parent, child)
|
|
parent ? "#{parent}/#{child}" : child
|
|
end
|
|
|
|
def merge_controller_scope(parent, child)
|
|
child
|
|
end
|
|
|
|
def merge_action_scope(parent, child)
|
|
child
|
|
end
|
|
|
|
def merge_via_scope(parent, child)
|
|
child
|
|
end
|
|
|
|
def merge_format_scope(parent, child)
|
|
child
|
|
end
|
|
|
|
def merge_path_names_scope(parent, child)
|
|
merge_options_scope(parent, child)
|
|
end
|
|
|
|
def merge_constraints_scope(parent, child)
|
|
merge_options_scope(parent, child)
|
|
end
|
|
|
|
def merge_defaults_scope(parent, child)
|
|
merge_options_scope(parent, child)
|
|
end
|
|
|
|
def merge_blocks_scope(parent, child)
|
|
merged = parent ? parent.dup : []
|
|
merged << child if child
|
|
merged
|
|
end
|
|
|
|
def merge_options_scope(parent, child)
|
|
(parent || {}).merge(child)
|
|
end
|
|
|
|
def merge_shallow_scope(parent, child)
|
|
child ? true : false
|
|
end
|
|
|
|
def merge_to_scope(parent, child)
|
|
child
|
|
end
|
|
end
|
|
|
|
# Resource routing allows you to quickly declare all of the common routes
|
|
# for a given resourceful controller. Instead of declaring separate routes
|
|
# for your +index+, +show+, +new+, +edit+, +create+, +update+ and +destroy+
|
|
# actions, a resourceful route declares them in a single line of code:
|
|
#
|
|
# resources :photos
|
|
#
|
|
# Sometimes, you have a resource that clients always look up without
|
|
# referencing an ID. A common example, /profile always shows the profile of
|
|
# the currently logged in user. In this case, you can use a singular resource
|
|
# to map /profile (rather than /profile/:id) to the show action.
|
|
#
|
|
# resource :profile
|
|
#
|
|
# It's common to have resources that are logically children of other
|
|
# resources:
|
|
#
|
|
# resources :magazines do
|
|
# resources :ads
|
|
# end
|
|
#
|
|
# You may wish to organize groups of controllers under a namespace. Most
|
|
# commonly, you might group a number of administrative controllers under
|
|
# an +admin+ namespace. You would place these controllers under the
|
|
# <tt>app/controllers/admin</tt> directory, and you can group them together
|
|
# in your router:
|
|
#
|
|
# namespace "admin" do
|
|
# resources :posts, :comments
|
|
# end
|
|
#
|
|
# By default the +:id+ parameter doesn't accept dots. If you need to
|
|
# use dots as part of the +:id+ parameter add a constraint which
|
|
# overrides this restriction, e.g:
|
|
#
|
|
# resources :articles, id: /[^\/]+/
|
|
#
|
|
# This allows any character other than a slash as part of your +:id+.
|
|
#
|
|
module Resources
|
|
# CANONICAL_ACTIONS holds all actions that does not need a prefix or
|
|
# a path appended since they fit properly in their scope level.
|
|
VALID_ON_OPTIONS = [:new, :collection, :member]
|
|
RESOURCE_OPTIONS = [:as, :controller, :path, :only, :except, :param, :concerns]
|
|
CANONICAL_ACTIONS = %w(index create new show update destroy)
|
|
|
|
class Resource #:nodoc:
|
|
attr_reader :controller, :path, :param
|
|
|
|
def initialize(entities, api_only, shallow, options = {})
|
|
@name = entities.to_s
|
|
@path = (options[:path] || @name).to_s
|
|
@controller = (options[:controller] || @name).to_s
|
|
@as = options[:as]
|
|
@param = (options[:param] || :id).to_sym
|
|
@options = options
|
|
@shallow = shallow
|
|
@api_only = api_only
|
|
@only = options.delete :only
|
|
@except = options.delete :except
|
|
end
|
|
|
|
def default_actions
|
|
if @api_only
|
|
[:index, :create, :show, :update, :destroy]
|
|
else
|
|
[:index, :create, :new, :show, :update, :destroy, :edit]
|
|
end
|
|
end
|
|
|
|
def actions
|
|
if @only
|
|
Array(@only).map(&:to_sym)
|
|
elsif @except
|
|
default_actions - Array(@except).map(&:to_sym)
|
|
else
|
|
default_actions
|
|
end
|
|
end
|
|
|
|
def name
|
|
@as || @name
|
|
end
|
|
|
|
def plural
|
|
@plural ||= name.to_s
|
|
end
|
|
|
|
def singular
|
|
@singular ||= name.to_s.singularize
|
|
end
|
|
|
|
alias :member_name :singular
|
|
|
|
# Checks for uncountable plurals, and appends "_index" if the plural
|
|
# and singular form are the same.
|
|
def collection_name
|
|
singular == plural ? "#{plural}_index" : plural
|
|
end
|
|
|
|
def resource_scope
|
|
controller
|
|
end
|
|
|
|
alias :collection_scope :path
|
|
|
|
def member_scope
|
|
"#{path}/:#{param}"
|
|
end
|
|
|
|
alias :shallow_scope :member_scope
|
|
|
|
def new_scope(new_path)
|
|
"#{path}/#{new_path}"
|
|
end
|
|
|
|
def nested_param
|
|
:"#{singular}_#{param}"
|
|
end
|
|
|
|
def nested_scope
|
|
"#{path}/:#{nested_param}"
|
|
end
|
|
|
|
def shallow?
|
|
@shallow
|
|
end
|
|
|
|
def singleton?; false; end
|
|
end
|
|
|
|
class SingletonResource < Resource #:nodoc:
|
|
def initialize(entities, api_only, shallow, options)
|
|
super
|
|
@as = nil
|
|
@controller = (options[:controller] || plural).to_s
|
|
@as = options[:as]
|
|
end
|
|
|
|
def default_actions
|
|
if @api_only
|
|
[:show, :create, :update, :destroy]
|
|
else
|
|
[:show, :create, :update, :destroy, :new, :edit]
|
|
end
|
|
end
|
|
|
|
def plural
|
|
@plural ||= name.to_s.pluralize
|
|
end
|
|
|
|
def singular
|
|
@singular ||= name.to_s
|
|
end
|
|
|
|
alias :member_name :singular
|
|
alias :collection_name :singular
|
|
|
|
alias :member_scope :path
|
|
alias :nested_scope :path
|
|
|
|
def singleton?; true; end
|
|
end
|
|
|
|
def resources_path_names(options)
|
|
@scope[:path_names].merge!(options)
|
|
end
|
|
|
|
# Sometimes, you have a resource that clients always look up without
|
|
# referencing an ID. A common example, /profile always shows the
|
|
# profile of the currently logged in user. In this case, you can use
|
|
# a singular resource to map /profile (rather than /profile/:id) to
|
|
# the show action:
|
|
#
|
|
# resource :profile
|
|
#
|
|
# creates six different routes in your application, all mapping to
|
|
# the +Profiles+ controller (note that the controller is named after
|
|
# the plural):
|
|
#
|
|
# GET /profile/new
|
|
# GET /profile
|
|
# GET /profile/edit
|
|
# PATCH/PUT /profile
|
|
# DELETE /profile
|
|
# POST /profile
|
|
#
|
|
# === Options
|
|
# Takes same options as +resources+.
|
|
def resource(*resources, &block)
|
|
options = resources.extract_options!.dup
|
|
|
|
if apply_common_behavior_for(:resource, resources, options, &block)
|
|
return self
|
|
end
|
|
|
|
with_scope_level(:resource) do
|
|
options = apply_action_options options
|
|
resource_scope(SingletonResource.new(resources.pop, api_only?, @scope[:shallow], options)) do
|
|
yield if block_given?
|
|
|
|
concerns(options[:concerns]) if options[:concerns]
|
|
|
|
new do
|
|
get :new
|
|
end if parent_resource.actions.include?(:new)
|
|
|
|
set_member_mappings_for_resource
|
|
|
|
collection do
|
|
post :create
|
|
end if parent_resource.actions.include?(:create)
|
|
end
|
|
end
|
|
|
|
self
|
|
end
|
|
|
|
# In Rails, a resourceful route provides a mapping between HTTP verbs
|
|
# and URLs and controller actions. By convention, each action also maps
|
|
# to particular CRUD operations in a database. A single entry in the
|
|
# routing file, such as
|
|
#
|
|
# resources :photos
|
|
#
|
|
# creates seven different routes in your application, all mapping to
|
|
# the +Photos+ controller:
|
|
#
|
|
# GET /photos
|
|
# GET /photos/new
|
|
# POST /photos
|
|
# GET /photos/:id
|
|
# GET /photos/:id/edit
|
|
# PATCH/PUT /photos/:id
|
|
# DELETE /photos/:id
|
|
#
|
|
# Resources can also be nested infinitely by using this block syntax:
|
|
#
|
|
# resources :photos do
|
|
# resources :comments
|
|
# end
|
|
#
|
|
# This generates the following comments routes:
|
|
#
|
|
# GET /photos/:photo_id/comments
|
|
# GET /photos/:photo_id/comments/new
|
|
# POST /photos/:photo_id/comments
|
|
# GET /photos/:photo_id/comments/:id
|
|
# GET /photos/:photo_id/comments/:id/edit
|
|
# PATCH/PUT /photos/:photo_id/comments/:id
|
|
# DELETE /photos/:photo_id/comments/:id
|
|
#
|
|
# === Options
|
|
# Takes same options as <tt>Base#match</tt> as well as:
|
|
#
|
|
# [:path_names]
|
|
# Allows you to change the segment component of the +edit+ and +new+ actions.
|
|
# Actions not specified are not changed.
|
|
#
|
|
# resources :posts, path_names: { new: "brand_new" }
|
|
#
|
|
# The above example will now change /posts/new to /posts/brand_new
|
|
#
|
|
# [:path]
|
|
# Allows you to change the path prefix for the resource.
|
|
#
|
|
# resources :posts, path: 'postings'
|
|
#
|
|
# The resource and all segments will now route to /postings instead of /posts
|
|
#
|
|
# [:only]
|
|
# Only generate routes for the given actions.
|
|
#
|
|
# resources :cows, only: :show
|
|
# resources :cows, only: [:show, :index]
|
|
#
|
|
# [:except]
|
|
# Generate all routes except for the given actions.
|
|
#
|
|
# resources :cows, except: :show
|
|
# resources :cows, except: [:show, :index]
|
|
#
|
|
# [:shallow]
|
|
# Generates shallow routes for nested resource(s). When placed on a parent resource,
|
|
# generates shallow routes for all nested resources.
|
|
#
|
|
# resources :posts, shallow: true do
|
|
# resources :comments
|
|
# end
|
|
#
|
|
# Is the same as:
|
|
#
|
|
# resources :posts do
|
|
# resources :comments, except: [:show, :edit, :update, :destroy]
|
|
# end
|
|
# resources :comments, only: [:show, :edit, :update, :destroy]
|
|
#
|
|
# This allows URLs for resources that otherwise would be deeply nested such
|
|
# as a comment on a blog post like <tt>/posts/a-long-permalink/comments/1234</tt>
|
|
# to be shortened to just <tt>/comments/1234</tt>.
|
|
#
|
|
# [:shallow_path]
|
|
# Prefixes nested shallow routes with the specified path.
|
|
#
|
|
# scope shallow_path: "sekret" do
|
|
# resources :posts do
|
|
# resources :comments, shallow: true
|
|
# end
|
|
# end
|
|
#
|
|
# The +comments+ resource here will have the following routes generated for it:
|
|
#
|
|
# post_comments GET /posts/:post_id/comments(.:format)
|
|
# post_comments POST /posts/:post_id/comments(.:format)
|
|
# new_post_comment GET /posts/:post_id/comments/new(.:format)
|
|
# edit_comment GET /sekret/comments/:id/edit(.:format)
|
|
# comment GET /sekret/comments/:id(.:format)
|
|
# comment PATCH/PUT /sekret/comments/:id(.:format)
|
|
# comment DELETE /sekret/comments/:id(.:format)
|
|
#
|
|
# [:shallow_prefix]
|
|
# Prefixes nested shallow route names with specified prefix.
|
|
#
|
|
# scope shallow_prefix: "sekret" do
|
|
# resources :posts do
|
|
# resources :comments, shallow: true
|
|
# end
|
|
# end
|
|
#
|
|
# The +comments+ resource here will have the following routes generated for it:
|
|
#
|
|
# post_comments GET /posts/:post_id/comments(.:format)
|
|
# post_comments POST /posts/:post_id/comments(.:format)
|
|
# new_post_comment GET /posts/:post_id/comments/new(.:format)
|
|
# edit_sekret_comment GET /comments/:id/edit(.:format)
|
|
# sekret_comment GET /comments/:id(.:format)
|
|
# sekret_comment PATCH/PUT /comments/:id(.:format)
|
|
# sekret_comment DELETE /comments/:id(.:format)
|
|
#
|
|
# [:format]
|
|
# Allows you to specify the default value for optional +format+
|
|
# segment or disable it by supplying +false+.
|
|
#
|
|
# === Examples
|
|
#
|
|
# # routes call <tt>Admin::PostsController</tt>
|
|
# resources :posts, module: "admin"
|
|
#
|
|
# # resource actions are at /admin/posts.
|
|
# resources :posts, path: "admin/posts"
|
|
def resources(*resources, &block)
|
|
options = resources.extract_options!.dup
|
|
|
|
if apply_common_behavior_for(:resources, resources, options, &block)
|
|
return self
|
|
end
|
|
|
|
with_scope_level(:resources) do
|
|
options = apply_action_options options
|
|
resource_scope(Resource.new(resources.pop, api_only?, @scope[:shallow], options)) do
|
|
yield if block_given?
|
|
|
|
concerns(options[:concerns]) if options[:concerns]
|
|
|
|
collection do
|
|
get :index if parent_resource.actions.include?(:index)
|
|
post :create if parent_resource.actions.include?(:create)
|
|
end
|
|
|
|
new do
|
|
get :new
|
|
end if parent_resource.actions.include?(:new)
|
|
|
|
set_member_mappings_for_resource
|
|
end
|
|
end
|
|
|
|
self
|
|
end
|
|
|
|
# To add a route to the collection:
|
|
#
|
|
# resources :photos do
|
|
# collection do
|
|
# get 'search'
|
|
# end
|
|
# end
|
|
#
|
|
# This will enable Rails to recognize paths such as <tt>/photos/search</tt>
|
|
# with GET, and route to the search action of +PhotosController+. It will also
|
|
# create the <tt>search_photos_url</tt> and <tt>search_photos_path</tt>
|
|
# route helpers.
|
|
def collection
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use collection outside resource(s) scope"
|
|
end
|
|
|
|
with_scope_level(:collection) do
|
|
path_scope(parent_resource.collection_scope) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
# To add a member route, add a member block into the resource block:
|
|
#
|
|
# resources :photos do
|
|
# member do
|
|
# get 'preview'
|
|
# end
|
|
# end
|
|
#
|
|
# This will recognize <tt>/photos/1/preview</tt> with GET, and route to the
|
|
# preview action of +PhotosController+. It will also create the
|
|
# <tt>preview_photo_url</tt> and <tt>preview_photo_path</tt> helpers.
|
|
def member
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use member outside resource(s) scope"
|
|
end
|
|
|
|
with_scope_level(:member) do
|
|
if shallow?
|
|
shallow_scope {
|
|
path_scope(parent_resource.member_scope) { yield }
|
|
}
|
|
else
|
|
path_scope(parent_resource.member_scope) { yield }
|
|
end
|
|
end
|
|
end
|
|
|
|
def new
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use new outside resource(s) scope"
|
|
end
|
|
|
|
with_scope_level(:new) do
|
|
path_scope(parent_resource.new_scope(action_path(:new))) do
|
|
yield
|
|
end
|
|
end
|
|
end
|
|
|
|
def nested
|
|
unless resource_scope?
|
|
raise ArgumentError, "can't use nested outside resource(s) scope"
|
|
end
|
|
|
|
with_scope_level(:nested) do
|
|
if shallow? && shallow_nesting_depth >= 1
|
|
shallow_scope do
|
|
path_scope(parent_resource.nested_scope) do
|
|
scope(nested_options) { yield }
|
|
end
|
|
end
|
|
else
|
|
path_scope(parent_resource.nested_scope) do
|
|
scope(nested_options) { yield }
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
# See ActionDispatch::Routing::Mapper::Scoping#namespace
|
|
def namespace(path, options = {})
|
|
if resource_scope?
|
|
nested { super }
|
|
else
|
|
super
|
|
end
|
|
end
|
|
|
|
def shallow
|
|
@scope = @scope.new(shallow: true)
|
|
yield
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
def shallow?
|
|
!parent_resource.singleton? && @scope[:shallow]
|
|
end
|
|
|
|
# Matches a url pattern to one or more routes.
|
|
# For more information, see match[rdoc-ref:Base#match].
|
|
#
|
|
# match 'path' => 'controller#action', via: patch
|
|
# match 'path', to: 'controller#action', via: :post
|
|
# match 'path', 'otherpath', on: :member, via: :get
|
|
def match(path, *rest, &block)
|
|
if rest.empty? && Hash === path
|
|
options = path
|
|
path, to = options.find { |name, _value| name.is_a?(String) }
|
|
|
|
raise ArgumentError, "Route path not specified" if path.nil?
|
|
|
|
case to
|
|
when Symbol
|
|
options[:action] = to
|
|
when String
|
|
if to =~ /#/
|
|
options[:to] = to
|
|
else
|
|
options[:controller] = to
|
|
end
|
|
else
|
|
options[:to] = to
|
|
end
|
|
|
|
options.delete(path)
|
|
paths = [path]
|
|
else
|
|
options = rest.pop || {}
|
|
paths = [path] + rest
|
|
end
|
|
|
|
if options.key?(:defaults)
|
|
defaults(options.delete(:defaults)) { map_match(paths, options, &block) }
|
|
else
|
|
map_match(paths, options, &block)
|
|
end
|
|
end
|
|
|
|
# You can specify what Rails should route "/" to with the root method:
|
|
#
|
|
# root to: 'pages#main'
|
|
#
|
|
# For options, see +match+, as +root+ uses it internally.
|
|
#
|
|
# You can also pass a string which will expand
|
|
#
|
|
# root 'pages#main'
|
|
#
|
|
# You should put the root route at the top of <tt>config/routes.rb</tt>,
|
|
# because this means it will be matched first. As this is the most popular route
|
|
# of most Rails applications, this is beneficial.
|
|
def root(path, options = {})
|
|
if path.is_a?(String)
|
|
options[:to] = path
|
|
elsif path.is_a?(Hash) && options.empty?
|
|
options = path
|
|
else
|
|
raise ArgumentError, "must be called with a path and/or options"
|
|
end
|
|
|
|
if @scope.resources?
|
|
with_scope_level(:root) do
|
|
path_scope(parent_resource.path) do
|
|
match_root_route(options)
|
|
end
|
|
end
|
|
else
|
|
match_root_route(options)
|
|
end
|
|
end
|
|
|
|
private
|
|
|
|
def parent_resource
|
|
@scope[:scope_level_resource]
|
|
end
|
|
|
|
def apply_common_behavior_for(method, resources, options, &block)
|
|
if resources.length > 1
|
|
resources.each { |r| send(method, r, options, &block) }
|
|
return true
|
|
end
|
|
|
|
if options.delete(:shallow)
|
|
shallow do
|
|
send(method, resources.pop, options, &block)
|
|
end
|
|
return true
|
|
end
|
|
|
|
if resource_scope?
|
|
nested { send(method, resources.pop, options, &block) }
|
|
return true
|
|
end
|
|
|
|
options.keys.each do |k|
|
|
(options[:constraints] ||= {})[k] = options.delete(k) if options[k].is_a?(Regexp)
|
|
end
|
|
|
|
scope_options = options.slice!(*RESOURCE_OPTIONS)
|
|
unless scope_options.empty?
|
|
scope(scope_options) do
|
|
send(method, resources.pop, options, &block)
|
|
end
|
|
return true
|
|
end
|
|
|
|
false
|
|
end
|
|
|
|
def apply_action_options(options)
|
|
return options if action_options? options
|
|
options.merge scope_action_options
|
|
end
|
|
|
|
def action_options?(options)
|
|
options[:only] || options[:except]
|
|
end
|
|
|
|
def scope_action_options
|
|
@scope[:action_options] || {}
|
|
end
|
|
|
|
def resource_scope?
|
|
@scope.resource_scope?
|
|
end
|
|
|
|
def resource_method_scope?
|
|
@scope.resource_method_scope?
|
|
end
|
|
|
|
def nested_scope?
|
|
@scope.nested?
|
|
end
|
|
|
|
def with_scope_level(kind) # :doc:
|
|
@scope = @scope.new_level(kind)
|
|
yield
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
def resource_scope(resource)
|
|
@scope = @scope.new(scope_level_resource: resource)
|
|
|
|
controller(resource.resource_scope) { yield }
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
def nested_options
|
|
options = { as: parent_resource.member_name }
|
|
options[:constraints] = {
|
|
parent_resource.nested_param => param_constraint
|
|
} if param_constraint?
|
|
|
|
options
|
|
end
|
|
|
|
def shallow_nesting_depth
|
|
@scope.find_all { |node|
|
|
node.frame[:scope_level_resource]
|
|
}.count { |node| node.frame[:scope_level_resource].shallow? }
|
|
end
|
|
|
|
def param_constraint?
|
|
@scope[:constraints] && @scope[:constraints][parent_resource.param].is_a?(Regexp)
|
|
end
|
|
|
|
def param_constraint
|
|
@scope[:constraints][parent_resource.param]
|
|
end
|
|
|
|
def canonical_action?(action)
|
|
resource_method_scope? && CANONICAL_ACTIONS.include?(action.to_s)
|
|
end
|
|
|
|
def shallow_scope
|
|
scope = { as: @scope[:shallow_prefix],
|
|
path: @scope[:shallow_path] }
|
|
@scope = @scope.new scope
|
|
|
|
yield
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
def path_for_action(action, path)
|
|
return "#{@scope[:path]}/#{path}" if path
|
|
|
|
if canonical_action?(action)
|
|
@scope[:path].to_s
|
|
else
|
|
"#{@scope[:path]}/#{action_path(action)}"
|
|
end
|
|
end
|
|
|
|
def action_path(name)
|
|
@scope[:path_names][name.to_sym] || name
|
|
end
|
|
|
|
def prefix_name_for_action(as, action)
|
|
if as
|
|
prefix = as
|
|
elsif !canonical_action?(action)
|
|
prefix = action
|
|
end
|
|
|
|
if prefix && prefix != "/" && !prefix.empty?
|
|
Mapper.normalize_name prefix.to_s.tr("-", "_")
|
|
end
|
|
end
|
|
|
|
def name_for_action(as, action)
|
|
prefix = prefix_name_for_action(as, action)
|
|
name_prefix = @scope[:as]
|
|
|
|
if parent_resource
|
|
return nil unless as || action
|
|
|
|
collection_name = parent_resource.collection_name
|
|
member_name = parent_resource.member_name
|
|
end
|
|
|
|
action_name = @scope.action_name(name_prefix, prefix, collection_name, member_name)
|
|
candidate = action_name.select(&:present?).join("_")
|
|
|
|
unless candidate.empty?
|
|
# If a name was not explicitly given, we check if it is valid
|
|
# and return nil in case it isn't. Otherwise, we pass the invalid name
|
|
# forward so the underlying router engine treats it and raises an exception.
|
|
if as.nil?
|
|
candidate unless candidate !~ /\A[_a-z]/i || has_named_route?(candidate)
|
|
else
|
|
candidate
|
|
end
|
|
end
|
|
end
|
|
|
|
def set_member_mappings_for_resource # :doc:
|
|
member do
|
|
get :edit if parent_resource.actions.include?(:edit)
|
|
get :show if parent_resource.actions.include?(:show)
|
|
if parent_resource.actions.include?(:update)
|
|
patch :update
|
|
put :update
|
|
end
|
|
delete :destroy if parent_resource.actions.include?(:destroy)
|
|
end
|
|
end
|
|
|
|
def api_only? # :doc:
|
|
@set.api_only?
|
|
end
|
|
|
|
def path_scope(path)
|
|
@scope = @scope.new(path: merge_path_scope(@scope[:path], path))
|
|
yield
|
|
ensure
|
|
@scope = @scope.parent
|
|
end
|
|
|
|
def map_match(paths, options)
|
|
if options[:on] && !VALID_ON_OPTIONS.include?(options[:on])
|
|
raise ArgumentError, "Unknown scope #{on.inspect} given to :on"
|
|
end
|
|
|
|
if @scope[:to]
|
|
options[:to] ||= @scope[:to]
|
|
end
|
|
|
|
if @scope[:controller] && @scope[:action]
|
|
options[:to] ||= "#{@scope[:controller]}##{@scope[:action]}"
|
|
end
|
|
|
|
controller = options.delete(:controller) || @scope[:controller]
|
|
option_path = options.delete :path
|
|
to = options.delete :to
|
|
via = Mapping.check_via Array(options.delete(:via) {
|
|
@scope[:via]
|
|
})
|
|
formatted = options.delete(:format) { @scope[:format] }
|
|
anchor = options.delete(:anchor) { true }
|
|
options_constraints = options.delete(:constraints) || {}
|
|
|
|
path_types = paths.group_by(&:class)
|
|
path_types.fetch(String, []).each do |_path|
|
|
route_options = options.dup
|
|
if _path && option_path
|
|
raise ArgumentError, "Ambigous route definition. Both :path and the route path where specified as strings."
|
|
end
|
|
to = get_to_from_path(_path, to, route_options[:action])
|
|
decomposed_match(_path, controller, route_options, _path, to, via, formatted, anchor, options_constraints)
|
|
end
|
|
|
|
path_types.fetch(Symbol, []).each do |action|
|
|
route_options = options.dup
|
|
decomposed_match(action, controller, route_options, option_path, to, via, formatted, anchor, options_constraints)
|
|
end
|
|
|
|
self
|
|
end
|
|
|
|
def get_to_from_path(path, to, action)
|
|
return to if to || action
|
|
|
|
path_without_format = path.sub(/\(\.:format\)$/, "")
|
|
if using_match_shorthand?(path_without_format)
|
|
path_without_format.gsub(%r{^/}, "").sub(%r{/([^/]*)$}, '#\1').tr("-", "_")
|
|
else
|
|
nil
|
|
end
|
|
end
|
|
|
|
def using_match_shorthand?(path)
|
|
path =~ %r{^/?[-\w]+/[-\w/]+$}
|
|
end
|
|
|
|
def decomposed_match(path, controller, options, _path, to, via, formatted, anchor, options_constraints)
|
|
if on = options.delete(:on)
|
|
send(on) { decomposed_match(path, controller, options, _path, to, via, formatted, anchor, options_constraints) }
|
|
else
|
|
case @scope.scope_level
|
|
when :resources
|
|
nested { decomposed_match(path, controller, options, _path, to, via, formatted, anchor, options_constraints) }
|
|
when :resource
|
|
member { decomposed_match(path, controller, options, _path, to, via, formatted, anchor, options_constraints) }
|
|
else
|
|
add_route(path, controller, options, _path, to, via, formatted, anchor, options_constraints)
|
|
end
|
|
end
|
|
end
|
|
|
|
def add_route(action, controller, options, _path, to, via, formatted, anchor, options_constraints)
|
|
path = path_for_action(action, _path)
|
|
raise ArgumentError, "path is required" if path.blank?
|
|
|
|
action = action.to_s
|
|
|
|
default_action = options.delete(:action) || @scope[:action]
|
|
|
|
if action =~ /^[\w\-\/]+$/
|
|
default_action ||= action.tr("-", "_") unless action.include?("/")
|
|
else
|
|
action = nil
|
|
end
|
|
|
|
as = if !options.fetch(:as, true) # if it's set to nil or false
|
|
options.delete(:as)
|
|
else
|
|
name_for_action(options.delete(:as), action)
|
|
end
|
|
|
|
path = Mapping.normalize_path URI.parser.escape(path), formatted
|
|
ast = Journey::Parser.parse path
|
|
|
|
mapping = Mapping.build(@scope, @set, ast, controller, default_action, to, via, formatted, options_constraints, anchor, options)
|
|
@set.add_route(mapping, as)
|
|
end
|
|
|
|
def match_root_route(options)
|
|
name = has_named_route?(name_for_action(:root, nil)) ? nil : :root
|
|
args = ["/", { as: name, via: :get }.merge!(options)]
|
|
|
|
match(*args)
|
|
end
|
|
end
|
|
|
|
# Routing Concerns allow you to declare common routes that can be reused
|
|
# inside others resources and routes.
|
|
#
|
|
# concern :commentable do
|
|
# resources :comments
|
|
# end
|
|
#
|
|
# concern :image_attachable do
|
|
# resources :images, only: :index
|
|
# end
|
|
#
|
|
# These concerns are used in Resources routing:
|
|
#
|
|
# resources :messages, concerns: [:commentable, :image_attachable]
|
|
#
|
|
# or in a scope or namespace:
|
|
#
|
|
# namespace :posts do
|
|
# concerns :commentable
|
|
# end
|
|
module Concerns
|
|
# Define a routing concern using a name.
|
|
#
|
|
# Concerns may be defined inline, using a block, or handled by
|
|
# another object, by passing that object as the second parameter.
|
|
#
|
|
# The concern object, if supplied, should respond to <tt>call</tt>,
|
|
# which will receive two parameters:
|
|
#
|
|
# * The current mapper
|
|
# * A hash of options which the concern object may use
|
|
#
|
|
# Options may also be used by concerns defined in a block by accepting
|
|
# a block parameter. So, using a block, you might do something as
|
|
# simple as limit the actions available on certain resources, passing
|
|
# standard resource options through the concern:
|
|
#
|
|
# concern :commentable do |options|
|
|
# resources :comments, options
|
|
# end
|
|
#
|
|
# resources :posts, concerns: :commentable
|
|
# resources :archived_posts do
|
|
# # Don't allow comments on archived posts
|
|
# concerns :commentable, only: [:index, :show]
|
|
# end
|
|
#
|
|
# Or, using a callable object, you might implement something more
|
|
# specific to your application, which would be out of place in your
|
|
# routes file.
|
|
#
|
|
# # purchasable.rb
|
|
# class Purchasable
|
|
# def initialize(defaults = {})
|
|
# @defaults = defaults
|
|
# end
|
|
#
|
|
# def call(mapper, options = {})
|
|
# options = @defaults.merge(options)
|
|
# mapper.resources :purchases
|
|
# mapper.resources :receipts
|
|
# mapper.resources :returns if options[:returnable]
|
|
# end
|
|
# end
|
|
#
|
|
# # routes.rb
|
|
# concern :purchasable, Purchasable.new(returnable: true)
|
|
#
|
|
# resources :toys, concerns: :purchasable
|
|
# resources :electronics, concerns: :purchasable
|
|
# resources :pets do
|
|
# concerns :purchasable, returnable: false
|
|
# end
|
|
#
|
|
# Any routing helpers can be used inside a concern. If using a
|
|
# callable, they're accessible from the Mapper that's passed to
|
|
# <tt>call</tt>.
|
|
def concern(name, callable = nil, &block)
|
|
callable ||= lambda { |mapper, options| mapper.instance_exec(options, &block) }
|
|
@concerns[name] = callable
|
|
end
|
|
|
|
# Use the named concerns
|
|
#
|
|
# resources :posts do
|
|
# concerns :commentable
|
|
# end
|
|
#
|
|
# concerns also work in any routes helper that you want to use:
|
|
#
|
|
# namespace :posts do
|
|
# concerns :commentable
|
|
# end
|
|
def concerns(*args)
|
|
options = args.extract_options!
|
|
args.flatten.each do |name|
|
|
if concern = @concerns[name]
|
|
concern.call(self, options)
|
|
else
|
|
raise ArgumentError, "No concern named #{name} was found!"
|
|
end
|
|
end
|
|
end
|
|
end
|
|
|
|
module CustomUrls
|
|
# Define custom url helpers that will be added to the application's
|
|
# routes. This allows you to override and/or replace the default behavior
|
|
# of routing helpers, e.g:
|
|
#
|
|
# direct :homepage do
|
|
# "http://www.rubyonrails.org"
|
|
# end
|
|
#
|
|
# direct :commentable do |model|
|
|
# [ model, anchor: model.dom_id ]
|
|
# end
|
|
#
|
|
# direct :main do
|
|
# { controller: "pages", action: "index", subdomain: "www" }
|
|
# end
|
|
#
|
|
# The return value from the block passed to `direct` must be a valid set of
|
|
# arguments for `url_for` which will actually build the url string. This can
|
|
# be one of the following:
|
|
#
|
|
# * A string, which is treated as a generated url
|
|
# * A hash, e.g. { controller: "pages", action: "index" }
|
|
# * An array, which is passed to `polymorphic_url`
|
|
# * An Active Model instance
|
|
# * An Active Model class
|
|
#
|
|
# NOTE: Other url helpers can be called in the block but be careful not to invoke
|
|
# your custom url helper again otherwise it will result in a stack overflow error
|
|
#
|
|
# You can also specify default options that will be passed through to
|
|
# your url helper definition, e.g:
|
|
#
|
|
# direct :browse, page: 1, size: 10 do |options|
|
|
# [ :products, options.merge(params.permit(:page, :size).to_h.symbolize_keys) ]
|
|
# end
|
|
#
|
|
# In this instance the `params` object comes from the context in which the the
|
|
# block is executed, e.g. generating a url inside a controller action or a view.
|
|
# If the block is executed where there isn't a params object such as this:
|
|
#
|
|
# Rails.application.routes.url_helpers.browse_path
|
|
#
|
|
# then it will raise a `NameError`. Because of this you need to be aware of the
|
|
# context in which you will use your custom url helper when defining it.
|
|
#
|
|
# NOTE: The `direct` method can't be used inside of a scope block such as
|
|
# `namespace` or `scope` and will raise an error if it detects that it is.
|
|
def direct(name, options = {}, &block)
|
|
unless @scope.root?
|
|
raise RuntimeError, "The direct method can't be used inside a routes scope block"
|
|
end
|
|
|
|
@set.add_url_helper(name, options, &block)
|
|
end
|
|
|
|
# Define custom polymorphic mappings of models to urls. This alters the
|
|
# behavior of `polymorphic_url` and consequently the behavior of
|
|
# `link_to` and `form_for` when passed a model instance, e.g:
|
|
#
|
|
# resource :basket
|
|
#
|
|
# resolve "Basket" do
|
|
# [:basket]
|
|
# end
|
|
#
|
|
# This will now generate "/basket" when a `Basket` instance is passed to
|
|
# `link_to` or `form_for` instead of the standard "/baskets/:id".
|
|
#
|
|
# NOTE: This custom behavior only applies to simple polymorphic urls where
|
|
# a single model instance is passed and not more complicated forms, e.g:
|
|
#
|
|
# # config/routes.rb
|
|
# resource :profile
|
|
# namespace :admin do
|
|
# resources :users
|
|
# end
|
|
#
|
|
# resolve("User") { [:profile] }
|
|
#
|
|
# # app/views/application/_menu.html.erb
|
|
# link_to "Profile", @current_user
|
|
# link_to "Profile", [:admin, @current_user]
|
|
#
|
|
# The first `link_to` will generate "/profile" but the second will generate
|
|
# the standard polymorphic url of "/admin/users/1".
|
|
#
|
|
# You can pass options to a polymorphic mapping - the arity for the block
|
|
# needs to be two as the instance is passed as the first argument, e.g:
|
|
#
|
|
# resolve "Basket", anchor: "items" do |basket, options|
|
|
# [:basket, options]
|
|
# end
|
|
#
|
|
# This generates the url "/basket#items" because when the last item in an
|
|
# array passed to `polymorphic_url` is a hash then it's treated as options
|
|
# to the url helper that gets called.
|
|
#
|
|
# NOTE: The `resolve` method can't be used inside of a scope block such as
|
|
# `namespace` or `scope` and will raise an error if it detects that it is.
|
|
def resolve(*args, &block)
|
|
unless @scope.root?
|
|
raise RuntimeError, "The resolve method can't be used inside a routes scope block"
|
|
end
|
|
|
|
options = args.extract_options!
|
|
args = args.flatten(1)
|
|
|
|
args.each do |klass|
|
|
@set.add_polymorphic_mapping(klass, options, &block)
|
|
end
|
|
end
|
|
end
|
|
|
|
class Scope # :nodoc:
|
|
OPTIONS = [:path, :shallow_path, :as, :shallow_prefix, :module,
|
|
:controller, :action, :path_names, :constraints,
|
|
:shallow, :blocks, :defaults, :via, :format, :options, :to]
|
|
|
|
RESOURCE_SCOPES = [:resource, :resources]
|
|
RESOURCE_METHOD_SCOPES = [:collection, :member, :new]
|
|
|
|
attr_reader :parent, :scope_level
|
|
|
|
def initialize(hash, parent = NULL, scope_level = nil)
|
|
@hash = hash
|
|
@parent = parent
|
|
@scope_level = scope_level
|
|
end
|
|
|
|
def nested?
|
|
scope_level == :nested
|
|
end
|
|
|
|
def null?
|
|
@hash.nil? && @parent.nil?
|
|
end
|
|
|
|
def root?
|
|
@parent.null?
|
|
end
|
|
|
|
def resources?
|
|
scope_level == :resources
|
|
end
|
|
|
|
def resource_method_scope?
|
|
RESOURCE_METHOD_SCOPES.include? scope_level
|
|
end
|
|
|
|
def action_name(name_prefix, prefix, collection_name, member_name)
|
|
case scope_level
|
|
when :nested
|
|
[name_prefix, prefix]
|
|
when :collection
|
|
[prefix, name_prefix, collection_name]
|
|
when :new
|
|
[prefix, :new, name_prefix, member_name]
|
|
when :member
|
|
[prefix, name_prefix, member_name]
|
|
when :root
|
|
[name_prefix, collection_name, prefix]
|
|
else
|
|
[name_prefix, member_name, prefix]
|
|
end
|
|
end
|
|
|
|
def resource_scope?
|
|
RESOURCE_SCOPES.include? scope_level
|
|
end
|
|
|
|
def options
|
|
OPTIONS
|
|
end
|
|
|
|
def new(hash)
|
|
self.class.new hash, self, scope_level
|
|
end
|
|
|
|
def new_level(level)
|
|
self.class.new(frame, self, level)
|
|
end
|
|
|
|
def [](key)
|
|
scope = find { |node| node.frame.key? key }
|
|
scope && scope.frame[key]
|
|
end
|
|
|
|
include Enumerable
|
|
|
|
def each
|
|
node = self
|
|
until node.equal? NULL
|
|
yield node
|
|
node = node.parent
|
|
end
|
|
end
|
|
|
|
def frame; @hash; end
|
|
|
|
NULL = Scope.new(nil, nil)
|
|
end
|
|
|
|
def initialize(set) #:nodoc:
|
|
@set = set
|
|
@scope = Scope.new(path_names: @set.resources_path_names)
|
|
@concerns = {}
|
|
end
|
|
|
|
include Base
|
|
include HttpHelpers
|
|
include Redirection
|
|
include Scoping
|
|
include Concerns
|
|
include Resources
|
|
include CustomUrls
|
|
end
|
|
end
|
|
end
|