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# frozen_string_literal: true
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, overridden_subject = nil)
super(user, action, overridden_subject || subject)
end
# delegate all #can? queries to the subject
def declarative_policy_delegate
subject
end
def present(**attributes)
self
end
def url_builder
Gitlab::UrlBuilder.instance
end
def is_a?(type)
super || subject.is_a?(type)
end
def web_url
url_builder.build(subject)
end
def web_path
url_builder.build(subject, only_path: true)
end
class_methods do
def presenter?
true
end
def presents(*target_classes, as: nil)
if target_classes.any? { |k| k.is_a?(Symbol) }
raise ArgumentError, "Unsupported target class type: #{target_classes}."
end
if self < ::Gitlab::View::Presenter::Delegated
target_classes.each { |k| delegator_target(k) }
elsif self < ::Gitlab::View::Presenter::Simple
# no-op
end
define_method(as) { subject } if as
end
end
end
end
end
end
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