# mongoid requires that all embedded documents have an id. If you have existing data with embedded documents
    # without id's everything works fine working with the data (read only). But when updating,
    # an _id is generated for the embedded document each time it's created (since it doesn't exist).
    # Thus when the form is rendered it gets one id and when the post request is handled the id's differ.
    # This results in the id being set on the embedded model but none of the other attributes being saved.
    # The next save works fine but the first save doesn't appear to actually save anything.
    #
    # This fix (read: hack) forces the id of the embedded doc in the request to match the one we are going to update.
    # The resulting request will set both the attributes updated and the _id field.
    def accepts_nested_attributes_for(name)
      super

      class_eval <<-RUBY
        def assign_attributes(attrs = nil, options = {})
          nested_attrs = attrs['#{name}_attributes']
          if nested_attrs
            nested_attrs['id'] = #{name}.id.to_s
          end

          super
        end
      RUBY
    end