145 lines
3.9 KiB
Ruby
145 lines
3.9 KiB
Ruby
# Store object full path in separate table for easy lookup and uniq validation
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# Object must have name and path db fields and respond to parent and parent_changed? methods.
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module Routable
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extend ActiveSupport::Concern
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included do
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# Remove `inverse_of: source` when upgraded to rails 5.2
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# See https://github.com/rails/rails/pull/28808
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has_one :route, as: :source, autosave: true, dependent: :destroy, inverse_of: :source # rubocop:disable Cop/ActiveRecordDependent
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has_many :redirect_routes, as: :source, autosave: true, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
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validates :route, presence: true
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scope :with_route, -> { includes(:route) }
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after_validation :set_path_errors
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before_validation do
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if full_path_changed? || full_name_changed?
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prepare_route
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end
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end
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end
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class_methods do
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# Finds a single object by full path match in routes table.
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#
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# Usage:
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#
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# Klass.find_by_full_path('gitlab-org/gitlab-ce')
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#
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# Returns a single object, or nil.
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def find_by_full_path(path, follow_redirects: false)
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# On MySQL we want to ensure the ORDER BY uses a case-sensitive match so
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# any literal matches come first, for this we have to use "BINARY".
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# Without this there's still no guarantee in what order MySQL will return
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# rows.
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#
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# Why do we do this?
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#
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# Even though we have Rails validation on Route for unique paths
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# (case-insensitive), there are old projects in our DB (and possibly
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# clients' DBs) that have the same path with different cases.
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# See https://gitlab.com/gitlab-org/gitlab-ce/issues/18603. Also note that
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# our unique index is case-sensitive in Postgres.
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binary = Gitlab::Database.mysql? ? 'BINARY' : ''
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order_sql = "(CASE WHEN #{binary} routes.path = #{connection.quote(path)} THEN 0 ELSE 1 END)"
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found = where_full_path_in([path]).reorder(order_sql).take
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return found if found
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if follow_redirects
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if Gitlab::Database.postgresql?
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joins(:redirect_routes).find_by("LOWER(redirect_routes.path) = LOWER(?)", path)
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else
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joins(:redirect_routes).find_by(redirect_routes: { path: path })
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end
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end
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end
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# Builds a relation to find multiple objects by their full paths.
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#
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# Usage:
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#
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# Klass.where_full_path_in(%w{gitlab-org/gitlab-ce gitlab-org/gitlab-ee})
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#
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# Returns an ActiveRecord::Relation.
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def where_full_path_in(paths)
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wheres = []
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cast_lower = Gitlab::Database.postgresql?
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paths.each do |path|
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path = connection.quote(path)
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where =
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if cast_lower
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"(LOWER(routes.path) = LOWER(#{path}))"
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else
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"(routes.path = #{path})"
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end
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wheres << where
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end
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if wheres.empty?
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none
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else
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joins(:route).where(wheres.join(' OR '))
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end
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end
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end
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def full_name
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route&.name || build_full_name
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end
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def full_path
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route&.path || build_full_path
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end
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def full_path_components
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full_path.split('/')
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end
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def build_full_path
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if parent && path
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parent.full_path + '/' + path
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else
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path
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end
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end
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# Group would override this to check from association
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def owned_by?(user)
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owner == user
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end
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private
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def set_path_errors
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route_path_errors = self.errors.delete(:"route.path")
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self.errors[:path].concat(route_path_errors) if route_path_errors
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end
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def full_name_changed?
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name_changed? || parent_changed?
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end
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def full_path_changed?
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path_changed? || parent_changed?
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end
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def build_full_name
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if parent && name
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parent.human_name + ' / ' + name
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else
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name
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end
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end
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def prepare_route
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route || build_route(source: self)
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route.path = build_full_path
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route.name = build_full_name
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end
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end
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