association methods are now generated in modules

Instead of generating association methods directly in the model
class, they are generated in an anonymous module which
is then included in the model class. There is one such module
for each association. The only subtlety is that the
generated_attributes_methods module (from ActiveModel) must
be forced to be included before association methods are created
so that attribute methods will not shadow association methods.

1 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/attribute_methods.rb b/activerecord/lib/active_record/attribute_methods.rb
index d7bfaa5655..2d720fe700 100644
--- a/activerecord/lib/active_record/attribute_methods.rb
+++ b/activerecord/lib/active_record/attribute_methods.rb
@@ -8,6 +8,12 @@ module ActiveRecord
     include ActiveModel::AttributeMethods
 
     module ClassMethods
+      def inherited(child_class)
+        # force creation + include before accessor method modules
+        child_class.generated_attribute_methods
+        super
+      end
+
       # Generates all the attribute related methods for columns in the database
       # accessors, mutators and query methods.
       def define_attribute_methods