adds comment

ckanext/odsh/plugin.py

@@ -220,9 +220,11 @@ class OdshPlugin(plugins.SingletonPlugin, DefaultTranslation, DefaultDatasetForm
         if resource.get('package_id'):
             tools.add_attributes_resources(context, resource)
 
-    def after_update(self, context, resource):
-        if resource.get('package_id'):
-            tools.add_attributes_resources(context, resource)
+    def after_update(self, context, resource_or_package):
+        if resource_or_package.get('package_id'):  # this is a resource
+            tools.add_attributes_resources(context, resource_or_package)
+        else:  # this is a package
+            pass
 
     @staticmethod
     def _update_is_new_in_pkg_dict(pkg_dict):