[IMP] web: fetch records alongside read_group

This rev. adds params to the 'web_read_group' method, allowing to
search_read records inside each groups in a single RPC, instead of
doing a 'web_read_group' RPC followed by n 'search_read' RPCs,
where n is the number of opened groups.

Part of task 1915702

1 files changed, 4 insertions, 2 deletions

diff --git a/addons/web/static/src/js/views/list/list_model.js b/addons/web/static/src/js/views/list/list_model.js
index 73c2d86864d..41178498c96 100644
--- a/addons/web/static/src/js/views/list/list_model.js
+++ b/addons/web/static/src/js/views/list/list_model.js
@@ -89,9 +89,11 @@ odoo.define('web.ListModel', function (require) {
          * @override
          * @private
          */
-        _readGroup: function (list) {
+        _readGroup: function (list, options) {
             var self = this;
-            return this._super.apply(this, arguments).then(function (result) {
+            options = options || {};
+            options.fetchRecordsWithGroups = true;
+            return this._super(list, options).then(function (result) {
                 var prom;
                 if (!list.parentID) {
                     // groupbys buttons are only displayed on the first level of