Group: add usergroup_add_user_show_all_student_by_default conf setting - refs BT#20712

Show all users in selector as initial list when subscribing users to group

main/admin/add_users_to_usergroup.php

@@ -86,9 +86,12 @@ function change_select(reset) {
 
     if (reset) {
         document.formulaire["first_letter_user"].value = "";
-        document.formulaire["form_sent"].value = "1";
+        
+        if ('.(api_get_configuration_value('usergroup_add_user_show_all_student_by_default') ? 0 : 1).') {
+            document.formulaire["form_sent"].value = "1";
 
-        return;
+            return;
+        }
     }
 
     $.post("'.api_get_self().'", $(document.formulaire).serialize(), function(data) {
@@ -318,6 +321,17 @@ if (!empty($user_list)) {
     }
 }
 
+if (api_get_configuration_value('usergroup_add_user_show_all_student_by_default')
+    && empty($elements_not_in)
+    && empty($first_letter_user)
+) {
+    $initialUserList = UserManager::getUserListLike([], $order, true, 'OR');
+    $elements_not_in = array_combine(
+        array_column($initialUserList, 'id'),
+        array_column($initialUserList, 'complete_name_with_username')
+    );
+}
+
 if (ChamiloApi::isAjaxRequest()) {
     JsonResponse::create($elements_not_in)->send();
     exit;

main/install/configuration.dist.php

@@ -1239,6 +1239,9 @@ VALUES (2, 13, 'session_courses_read_only_mode', 'Lock Course In Session', 1, 1,
 // Do not unsubscribe users from session when sessions are unsubscribe to class
 // $_configuration['usergroup_do_not_unsubscribe_users_from_session_on_session_unsubscribe'] = false;
 
+// Show all users in selector as initial list when subscribing users to class
+//$_configuration['usergroup_add_user_show_all_student_by_default'] = false;
+
 // Validate user login via a webservice, Chamilo will send a "login" and "password" parameters
 // to the "myWebServiceFunctionToLogin" function, the result should be "1" if the user have access.
 /*$_configuration['webservice_validation'] = [