class ProjectFeature < ActiveRecord::Base # == Project features permissions # # Grants access level to project tools # # Tools can be enabled only for users, everyone or disabled # Access control is made only for non private projects # # levels: # # Disabled: not enabled for anyone # Private: enabled only for team members # Enabled: enabled for everyone able to access the project # # Permission levels DISABLED = 0 PRIVATE = 10 ENABLED = 20 FEATURES = %i(issues merge_requests wiki snippets builds repository).freeze class << self def access_level_attribute(feature) feature = feature.model_name.plural.to_sym if feature.respond_to?(:model_name) raise ArgumentError, "invalid project feature: #{feature}" unless FEATURES.include?(feature) "#{feature}_access_level".to_sym end def quoted_access_level_column(feature) attribute = connection.quote_column_name(access_level_attribute(feature)) table = connection.quote_table_name(table_name) "#{table}.#{attribute}" end end # Default scopes force us to unscope here since a service may need to check # permissions for a project in pending_delete # http://stackoverflow.com/questions/1540645/how-to-disable-default-scope-for-a-belongs-to belongs_to :project, -> { unscope(where: :pending_delete) } validate :repository_children_level default_value_for :builds_access_level, value: ENABLED, allows_nil: false default_value_for :issues_access_level, value: ENABLED, allows_nil: false default_value_for :merge_requests_access_level, value: ENABLED, allows_nil: false default_value_for :snippets_access_level, value: ENABLED, allows_nil: false default_value_for :wiki_access_level, value: ENABLED, allows_nil: false default_value_for :repository_access_level, value: ENABLED, allows_nil: false def feature_available?(feature, user) access_level = public_send(ProjectFeature.access_level_attribute(feature)) get_permission(user, access_level) end def builds_enabled? builds_access_level > DISABLED end def wiki_enabled? wiki_access_level > DISABLED end def merge_requests_enabled? merge_requests_access_level > DISABLED end def issues_enabled? issues_access_level > DISABLED end private # Validates builds and merge requests access level # which cannot be higher than repository access level def repository_children_level validator = lambda do |field| level = public_send(field) || ProjectFeature::ENABLED not_allowed = level > repository_access_level self.errors.add(field, "cannot have higher visibility level than repository access level") if not_allowed end %i(merge_requests_access_level builds_access_level).each(&validator) end def get_permission(user, level) case level when DISABLED false when PRIVATE user && (project.team.member?(user) || user.admin?) when ENABLED true else true end end end