def set(attribute_name, value, &block)
      # Assign, without the =
      attribute_name = attribute_name.to_sym

      check_valid_field_name(attribute_name)

      old_value = @attributes[attribute_name]
      new_value = wrap_value(value, [attribute_name])

      if old_value != new_value
        # Track the old value, skip if we are in no_validate
        attribute_will_change!(attribute_name, old_value) unless Volt.in_mode?(:no_change_tracking)

        # Assign the new value
        @attributes[attribute_name] = new_value

        @deps.changed!(attribute_name)

        @size_dep.changed! if old_value.nil? || new_value.nil?

        # TODO: Can we make this so it doesn't need to be handled for non store collections
        # (maybe move it to persistor, though thats weird since buffers don't have a persistor)
        clear_server_errors(attribute_name) if @server_errors.present?

        # Save the changes
        run_changed(attribute_name) unless Volt.in_mode?(:no_change_tracking)
      end

      new_value
    end
def set(attribute_name, value, &block)
      # Assign, without the =
      attribute_name = attribute_name.to_sym

      check_valid_field_name(attribute_name)

      old_value = @attributes[attribute_name]
      new_value = wrap_value(value, [attribute_name])

      if old_value != new_value
        # Track the old value, skip if we are in no_validate
        attribute_will_change!(attribute_name, old_value) unless Volt.in_mode?(:no_change_tracking)

        # Assign the new value
        @attributes[attribute_name] = new_value

        @deps.changed!(attribute_name)

        @size_dep.changed! if old_value.nil? || new_value.nil?

        # TODO: Can we make this so it doesn't need to be handled for non store collections
        # (maybe move it to persistor, though thats weird since buffers don't have a persistor)
        clear_server_errors(attribute_name) if @server_errors.present?

        # Save the changes
        run_changed(attribute_name) unless Volt.in_mode?(:no_change_tracking)
      end

      new_value
    end
Do the assignment to a model and trigger a changed event