New setting added "exercises_disable_new_attempts" see BT#15091

Disable all new exercise attempts in all the platform

main/exercise/exercise_submit.php

@@ -331,6 +331,11 @@ $questionListUncompressed = $objExercise->getQuestionListWithMediasUncompressed(
 Session::write('question_list_uncompressed', $questionListUncompressed);
 $clock_expired_time = null;
 if (empty($exercise_stat_info)) {
+    $disable = api_get_configuration_value('exercises_disable_new_attempts');
+    if ($disable) {
+        api_not_allowed(true);
+    }
+
     if ($debug) {
         error_log('5  $exercise_stat_info is empty ');
     }

main/exercise/overview.php

@@ -106,7 +106,7 @@ if (api_get_configuration_value('save_titles_as_html')) {
     );
 }
 
-//Exercise description
+// Exercise description
 if (!empty($objExercise->description)) {
     $html .= Display::div($objExercise->description, ['class' => 'exercise_description']);
 }
@@ -345,6 +345,12 @@ if ($time_control) {
 
 $html .= $message;
 
+$disable = api_get_configuration_value('exercises_disable_new_attempts');
+
+if ($disable && empty($exercise_stat_info)) {
+    $exercise_url_button = Display::return_message(get_lang('NewExerciseAttemptDisabled'));
+}
+
 if (!empty($exercise_url_button)) {
     $html .= Display::div(
         Display::div(

main/install/configuration.dist.php

@@ -1032,6 +1032,9 @@ VALUES (2, 13, 'session_courses_read_only_mode', 'Lock Course In Session', 1, 1,
     ]
 ];*/
 
+// Disable all new exercise attempts in all the platform
+// $_configuration['exercises_disable_new_attempts'] = false;
+
 // ------ Custom DB changes (keep this at the end)
 // Add user activation by confirmation email
 // This option prevents the new user to login in the platform if your account is not confirmed via email