Exercise : Only permit exercise mass delete if the exercise to be deleted is in the current session -refs GH#4281

main/exercise/exercise.php

@@ -279,7 +279,11 @@ if (!empty($action) && $is_allowedToEdit) {
             switch ($action) {
                 case 'delete':
                     if ($allowDelete) {
-                        $objExerciseTmp->delete();
+                        if ($objExerciseTmp->sessionId == $sessionId) {
+                            $objExerciseTmp->delete();
+                        } else {
+                            Display::addFlash(Display::return_message(sprintf(get_lang('ExerciseXNotDeleted'), $objExerciseTmp->name), 'error'));
+                        }
                     }
                     break;
                 case 'visible':

main/lang/english/trad4all.inc.php

@@ -8940,4 +8940,5 @@ $ListOfCoursesCodesAndSessions = "List of course codes and sessions";
 $AllUsersIncludingInactiveIncluded = "*: All users, including inactive, are included";
 $ReportQuarterlyTotalDiskUsage = "Total disk usage";
 $EditPortfolioComment = "Edit portfolio comment";
+$ExerciseXNotDeleted = "Test '%s' not deleted";
 ?>

main/lang/french/trad4all.inc.php

@@ -8876,4 +8876,5 @@ $ListOfCoursesCodesAndSessions = "Liste de codes de cours et sessions";
 $AllUsersIncludingInactiveIncluded = "*: Tous les utilisateurs, dont inactifs, sont inclus";
 $ReportQuarterlyTotalDiskUsage = "Utilisation totale du disque";
 $EditPortfolioComment = "Éditer le commentaire";
+$ExerciseXNotDeleted = "Exercice '%s' non supprimé";
 ?>

main/lang/spanish/trad4all.inc.php

@@ -8968,4 +8968,5 @@ $ListOfCoursesCodesAndSessions = "Lista de códigos de curso y sesiones";
 $AllUsersIncludingInactiveIncluded = "*: Todos los usuarios, inactivos inclusive";
 $ReportQuarterlyTotalDiskUsage = "Uso total del disco";
 $EditPortfolioComment = "Editar comentario de portafolio";
+$ExerciseXNotDeleted = "Ejercicio '%s' no ha sido borrado";
 ?>