More in line with the existing APIs

lib/generators/administrate/dashboard/templates/controller.rb.erb

@@ -31,14 +31,13 @@ module <%= namespace.classify %>
 
     # Override `resource_params` if you want to transform the submitted
     # data before it's persisted. For example, the following would turn all
-    # empty values into nil values:
+    # empty values into nil values. It uses other APIs such as `resource_class`
+    # and `dashboard`:
     #
     # def resource_params
-    #   params.require(resource_name)
-    #     .permit(dashboard_class::FORM_ATTRIBUTES)
-    #     .transform_values do |value|
-    #       value == "" ? nil : value
-    #     end
+    #   params.require(resource_class.model_name.param_key).
+    #     permit(dashboard.permitted_attributes).
+    #     transform_values { |value| value == "" ? nil : value }
     # end
 
     # See https://administrate-prototype.herokuapp.com/customizing_controller_actions