diff options
Diffstat (limited to 'activerecord/lib/active_record/reflection.rb')
-rw-r--r-- | activerecord/lib/active_record/reflection.rb | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/reflection.rb b/activerecord/lib/active_record/reflection.rb index 2d4c1d5507..0baa9654b7 100644 --- a/activerecord/lib/active_record/reflection.rb +++ b/activerecord/lib/active_record/reflection.rb @@ -1,8 +1,6 @@ module ActiveRecord module Reflection # :nodoc: - def self.included(base) - base.extend(ClassMethods) - end + extend ActiveSupport::Concern # Reflection allows you to interrogate Active Record classes and objects about their associations and aggregations. # This information can, for example, be used in a form builder that took an Active Record object and created input @@ -212,6 +210,13 @@ module ActiveRecord end def check_validity! + check_validity_of_inverse! + end + + def check_validity_of_inverse! + if has_inverse? && inverse_of.nil? + raise InverseOfAssociationNotFoundError.new(self) + end end def through_reflection @@ -225,6 +230,18 @@ module ActiveRecord nil end + def has_inverse? + !@options[:inverse_of].nil? + end + + def inverse_of + if has_inverse? + @inverse_of ||= klass.reflect_on_association(options[:inverse_of]) + else + nil + end + end + private def derive_class_name class_name = name.to_s.camelize @@ -300,6 +317,8 @@ module ActiveRecord unless [:belongs_to, :has_many].include?(source_reflection.macro) && source_reflection.options[:through].nil? raise HasManyThroughSourceAssociationMacroError.new(self) end + + check_validity_of_inverse! end def through_reflection_primary_key |