debian-mirror-gitlab/app/models/concerns/enum_with_nil.rb
2019-02-15 15:39:39 +05:30

34 lines
1,000 B
Ruby

# frozen_string_literal: true
module EnumWithNil
extend ActiveSupport::Concern
included do
def self.enum_with_nil(definitions)
# use original `enum` to auto-define all methods
enum(definitions)
# override auto-defined methods only for the
# key which uses nil value
definitions.each do |name, values|
next unless key_with_nil = values.key(nil)
# E.g. for enum_with_nil failure_reason: { unknown_failure: nil }
# this overrides auto-generated method `unknown_failure?`
define_method("#{key_with_nil}?") do
self[name].nil?
end
# E.g. for enum_with_nil failure_reason: { unknown_failure: nil }
# this overrides auto-generated method `failure_reason`
define_method(name) do
orig = super()
return orig unless orig.nil?
self.class.public_send(name.to_s.pluralize).key(nil) # rubocop:disable GitlabSecurity/PublicSend
end
end
end
end
end