Update, Vorrücken, Delete, Refactoring Statusvalidations

application/models/education/Studentlehrverband_model.php

@@ -12,4 +12,39 @@ class Studentlehrverband_model extends DB_Model
 		$this->pk = array('studiensemester_kurzbz', 'student_uid');
 		$this->hasSequence = false;
 	}
+
+	/**
+	 * Check if Rolle already exists
+	 * @param integer $prestudent_id
+	 * @param string $status_kurzbz
+	 * @param string $studiensemester_kurzbz
+	 * @param integer $ausbildungssemester
+	 * @return 1: if Rolle exists, 0: if it doesn't
+	 */
+	public function checkIfLehrverbandExists($student_uid, $studiensemester_kurzbz)
+	{
+		$qry = "SELECT
+					*
+				FROM 
+				    public.tbl_studentlehrverband
+				WHERE
+					student_uid = ? 
+				AND
+				    studiensemester_kurzbz = ?";
+
+		$result = $this->execQuery($qry, array($student_uid, $studiensemester_kurzbz));
+
+		if (isError($result))
+		{
+			return error($result);
+		}
+		elseif (!hasData($result))
+		{
+			return success("0", "Kein Lehrverband vorhanden!");
+		}
+		else
+		{
+			return success("1","Lehrverband vorhanden!");
+		}
+	}
 }