Fix HasManyAssociation#create ignoring the :primary_key option [#1633 state:resolved]

Signed-off-by: NFrederick Cheung <frederick.cheung@gmail.com>

activerecord/lib/active_record/associations/association_proxy.rb

@@ -180,7 +180,10 @@ def set_belongs_to_association_for(record)
             record["#{@reflection.options[:as]}_id"]   = @owner.id unless @owner.new_record?
             record["#{@reflection.options[:as]}_type"] = @owner.class.base_class.name.to_s
           else
-            record[@reflection.primary_key_name] = @owner.id unless @owner.new_record?
+            unless @owner.new_record?
+              primary_key = @reflection.options[:primary_key] || :id
+              record[@reflection.primary_key_name] = @owner.send(primary_key)
+            end
           end
         end
 

activerecord/test/cases/associations/has_many_associations_test.rb

@@ -1115,5 +1115,11 @@ def test_respond_to_private_class_methods
     assert !client_association.respond_to?(:private_method)
     assert client_association.respond_to?(:private_method, true)
   end
+
+  def test_creating_using_primary_key
+    firm = Firm.find(:first)
+    client = firm.clients_using_primary_key.create!(:name => 'test')
+    assert_equal firm.name, client.firm_name
+  end
 end