Removing unnecessary code [#5192 state:resolved]

Signed-off-by: José Valim <jose.valim@gmail.com>

activerecord/lib/active_record/autosave_association.rb

@@ -377,10 +377,6 @@ module ActiveRecord
           if association.updated?
             association_id = association.send(reflection.options[:primary_key] || :id)
             self[reflection.primary_key_name] = association_id
-            # TODO: Removing this code doesn't seem to matter...
-            if reflection.options[:polymorphic]
-              self[reflection.options[:foreign_type]] = association.class.base_class.name.to_s
-            end
           end
 
           saved if autosave

activerecord/test/cases/autosave_association_test.rb

@@ -171,7 +171,7 @@ class TestDefaultAutosaveAssociationOnAHasOneAssociation < ActiveRecord::TestCas
 end
 
 class TestDefaultAutosaveAssociationOnABelongsToAssociation < ActiveRecord::TestCase
-  fixtures :companies
+  fixtures :companies, :posts, :tags, :taggings
 
   def test_should_save_parent_but_not_invalid_child
     client = Client.new(:name => 'Joe (the Plumber)')
@@ -312,6 +312,12 @@ class TestDefaultAutosaveAssociationOnABelongsToAssociation < ActiveRecord::Test
     assert_equal num_orders +1, Order.count
     assert_equal num_customers +2, Customer.count
   end
+
+  def test_store_association_with_a_polymorphic_relationship
+    num_tagging = Tagging.count
+    tags(:misc).create_tagging(:taggable => posts(:thinking))
+    assert_equal num_tagging +1, Tagging.count
+  end
 end
 
 class TestDefaultAutosaveAssociationOnAHasManyAssociation < ActiveRecord::TestCase