81 lines
2.6 KiB
Ruby
81 lines
2.6 KiB
Ruby
require_dependency 'declarative_policy'
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class Ability
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class << self
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# Given a list of users and a project this method returns the users that can
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# read the given project.
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def users_that_can_read_project(users, project)
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DeclarativePolicy.subject_scope do
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users.select { |u| allowed?(u, :read_project, project) }
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end
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end
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# Given a list of users and a snippet this method returns the users that can
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# read the given snippet.
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def users_that_can_read_personal_snippet(users, snippet)
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DeclarativePolicy.subject_scope do
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users.select { |u| allowed?(u, :read_personal_snippet, snippet) }
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end
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end
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# Returns an Array of Issues that can be read by the given user.
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#
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# issues - The issues to reduce down to those readable by the user.
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# user - The User for which to check the issues
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# filters - A hash of abilities and filters to apply if the user lacks this
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# ability
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def issues_readable_by_user(issues, user = nil, filters: {})
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issues = apply_filters_if_needed(issues, user, filters)
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DeclarativePolicy.user_scope do
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issues.select { |issue| issue.visible_to_user?(user) }
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end
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end
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# Returns an Array of MergeRequests that can be read by the given user.
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#
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# merge_requests - MRs out of which to collect mr's readable by the user.
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# user - The User for which to check the merge_requests
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# filters - A hash of abilities and filters to apply if the user lacks this
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# ability
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def merge_requests_readable_by_user(merge_requests, user = nil, filters: {})
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merge_requests = apply_filters_if_needed(merge_requests, user, filters)
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DeclarativePolicy.user_scope do
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merge_requests.select { |mr| allowed?(user, :read_merge_request, mr) }
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end
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end
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def allowed?(user, action, subject = :global, opts = {})
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if subject.is_a?(Hash)
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opts, subject = subject, :global
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end
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policy = policy_for(user, subject)
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case opts[:scope]
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when :user
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DeclarativePolicy.user_scope { policy.can?(action) }
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when :subject
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DeclarativePolicy.subject_scope { policy.can?(action) }
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else
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policy.can?(action)
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end
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end
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def policy_for(user, subject = :global)
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cache = RequestStore.active? ? RequestStore : {}
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DeclarativePolicy.policy_for(user, subject, cache: cache)
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end
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private
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def apply_filters_if_needed(elements, user, filters)
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filters.each do |ability, filter|
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elements = filter.call(elements) unless allowed?(user, ability)
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end
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elements
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end
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end
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end
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