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Contents
# frozen_string_literal: true
require "active_support/concern"
module Decidim
# A concern with the features needed when you want a model to have a
# reference.
module HasReference
extend ActiveSupport::Concern
included do
after_commit :store_reference
validates :reference, presence: true, on: :update
def reference
self[:reference] || calculate_reference
end
private
# Public: Calculates a unique reference for the model using the function
# provided by configuration
#
# Returns a String.
def calculate_reference
return unless feature
Decidim.resource_reference_generator.call(self, feature)
end
# Internal: Sets the unique reference to the model. Note that if the resource
# implements `Decidim::Traceable` then any normal update (or `update_attributes`)
# will create a new version through an ActiveRecord update callback, but here
# we can't track the author of the version, so we use the `update_column` method
# which does not trigger callbacks.
#
# Returns nothing.
def store_reference
self[:reference] ||= calculate_reference
return unless changed?
# rubocop:disable Rails/SkipsModelValidations
update_column(:reference, self[:reference])
# rubocop:enable Rails/SkipsModelValidations
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems