fix quotes in SQL, fixes #1443

Closes #1443

Merge request studip/studip!2126

lib/classes/JsonApi/Routes/Blubber/ThreadsIndex.php

@@ -77,7 +77,7 @@ class ThreadsIndex extends JsonApiController
     private function getPublicThreads(\User $observer)
     {
         return $this->paginateThreads(
-            $this->upgradeAndFilterThreads($observer, \BlubberThread::findBySQL('context_type = "public"'))
+            $this->upgradeAndFilterThreads($observer, \BlubberThread::findBySQL("context_type = 'public'"))
         );
     }
 

lib/classes/sidebar/RoomSearchWidget.class.php

@@ -22,7 +22,7 @@ class RoomSearchWidget extends SidebarWidget
             ]
         );
 
-        $resource_categories = ResourceCategory::findBySQL('`class_name` ="Room" ORDER by `name`');
+        $resource_categories = ResourceCategory::findBySQL("class_name = 'Room' ORDER by name");
         $categories = [
             '' => _('Alle Kategorien')
         ];

tests/jsonapi/BlubberThreadsIndexTest.php

@@ -58,7 +58,7 @@ class BlubberThreadsIndexTest extends \Codeception\Test\Unit
             return count(
                 $this->upgradeAndFilterThreads(
                     $credentials,
-                    \BlubberThread::findBySQL('context_type = "public" AND visible_in_stream')
+                    \BlubberThread::findBySQL("context_type = 'public' AND visible_in_stream")
                 )
             );
         });