serializer.rb in active_model_serializers-0.8.0

- old
+ new

@@ -2,7 +2,18 @@
 class <%= class_name %>Serializer < <%= parent_class_name %>
   attributes <%= attributes_names.map(&:inspect).join(", ") %>
 <% association_names.each do |attribute| -%>
   has_one :<%= attribute %>
 <% end -%>
+<% if generate_id_method %>
+
+  # due to the difference between 1.8 and 1.9 with respect to #id and
+  # #object_id, we recommend that if you wish to serialize id columns, you
+  # do this. Feel free to remove this if you don't feel that it's appropriate.
+  #
+  # For more: https://github.com/rails-api/active_model_serializers/issues/127
+  def id
+    object.read_attribute_for_serialization(:id)
+  end
+<% end -%>
 end
 <% end -%>