update(MyLv/Lv.js):the user can only click on the grade of an lv if the lv had multiple pruefungen otherwise the grade is not clickable

application/controllers/api/frontend/v1/Lehre.php

@@ -30,6 +30,7 @@ class Lehre extends FHCAPI_Controller
 		parent::__construct([
 			'lvStudentenMail' => self::PERM_LOGGED,
 			'LV' => self::PERM_LOGGED,
+			'Pruefungen' => self::PERM_LOGGED,
 		]);
 
 		
@@ -76,6 +77,23 @@ class Lehre extends FHCAPI_Controller
 		
 		$this->terminateWithSuccess($result);
 	}
+
+	/**
+	 * fetches all Pruefungen of a student for a specific lehrveranstaltung
+	 * if the student passed the Pruefung on the first attempt, no information about the Pruefungen is stored in the database 
+	 * @param mixed $lehrveranstaltung_id
+	 * @return void
+	 */
+	public function Pruefungen($lehrveranstaltung_id)
+	{
+		$this->load->model('education/Pruefung_model', 'PruefungModel');
+
+		$result = $this->PruefungModel->getByStudentAndLv(getAuthUID(), $lehrveranstaltung_id, getUserLanguage());
+
+		$result = $this->getDataOrTerminateWithError($result);
+
+		$this->terminateWithSuccess($result);
+	}