[erp5_hal_json_style] No need to fetch getListItemUrlDict for every columns

bt5/erp5_hal_json_style/SkinTemplateItem/portal_skins/erp5_hal_json_style/ERP5Document_getHateoas.py

@@ -1778,6 +1778,8 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
           'value': brain_uid
         }
 
+      is_getListItemUrlDict_calculated = False
+
       for select in select_list:
         contents_item[select] = {}
         editable_field = editable_field_dict.get(select, None)
@@ -1821,6 +1823,7 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
           if select in url_column_dict:
             # Check if we get URL parameters using listbox field `url_columns`
             try:
+              # XXX call on aq_base?
               url_column_method = getattr(brain, url_column_dict[select])
               # Result of `url_column_method` must be a dictionary in the format
               # {'command': <command_name, ex: 'raw', 'push_history'>,
@@ -1838,10 +1841,15 @@ def calculateHateoas(is_portal=None, is_site_root=None, traversed_document=None,
               if url_column_dict[select]:
                 log("Invalid URL method {!s} on column {}".format(url_column_dict[select], select), level=800)
 
-          elif getattr(brain, 'getListItemUrlDict', None) is not None:
+          else:
+            if not is_getListItemUrlDict_calculated:
+              # XXX If only available on brains, maybe better to call on aq_self
+              getBrainListItemUrlDict = getattr(brain, 'getListItemUrlDict', None)
+              is_getListItemUrlDict_calculated = True
+            if getBrainListItemUrlDict is not None:
               # Check if we can get URL result from the brain
               try:
-              url_parameter_dict = brain.getListItemUrlDict(
+                url_parameter_dict = getBrainListItemUrlDict(
                   select, result_index, catalog_kw['selection_name']
                 )
               except (ConflictError, RuntimeError):