module Gitlab module View module Presenter CannotOverrideMethodError = Class.new(StandardError) module Base extend ActiveSupport::Concern include Gitlab::Routing include Gitlab::Allowable attr_reader :subject def can?(user, action, overriden_subject = nil) super(user, action, overriden_subject || subject) end # delegate all #can? queries to the subject def declarative_policy_delegate subject end class_methods do def presenter? true end def presents(name) define_method(name) { subject } end end end end end end