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# frozen_string_literal: true
module ActiveRecord
module ReadonlyAttributes
extend ActiveSupport::Concern
included do
class_attribute :_attr_readonly, instance_accessor: false, default: []
end
module ClassMethods
# Attributes listed as readonly will be used to create a new record but update operations will
# ignore these fields.
def attr_readonly(*attributes)
self._attr_readonly = Set.new(attributes.map(&:to_s)) + (_attr_readonly || [])
end
# Returns an array of all the attributes that have been specified as readonly.
def readonly_attributes
_attr_readonly
end
end
end
end