added origin and origin_attribute to ActiveRecord::Relation [#835 sta…

…te:resolved]

hobo/lib/hobo/engine.rb

@@ -27,6 +27,7 @@ class Engine < Rails::Engine
       require 'hobo/extensions/active_record/hobo_methods'
       require 'hobo/extensions/active_record/permissions'
       require 'hobo/extensions/active_record/scopes'
+      require 'hobo/extensions/active_record/relation_with_origin'
       require 'hobo/extensions/active_model/name'
       require 'hobo/extensions/active_model/translation'
     end

hobo/lib/hobo/extensions/active_record/relation_with_origin.rb

@@ -0,0 +1,28 @@
+module ActiveRecord
+
+  class Relation
+    attr_accessor :origin, :origin_attribute
+  end
+
+  module Associations
+    class AssociationCollection
+
+      def scoped_with_origin
+        relation = scoped_without_origin
+        relation.origin = @owner
+        relation.origin_attribute = @reflection.name
+        relation
+      end
+      alias_method_chain :scoped, :origin
+
+      def method_missing_with_origin(method, *args)
+        res = method_missing_without_origin(method, *args)
+        res.origin = @owner if res.respond_to?(:origin)
+        res.origin_attribute = @reflection.name if res.respond_to?(:origin_attribute)
+        res
+      end
+      alias_method_chain :method_missing, :origin
+
+    end
+  end
+end