Add: Enable/disable test_exam

src/web/php/db/writing_collection.php

@@ -44,9 +44,14 @@ class WritingCollection extends DBMethodContainer
 		$query = "
 			SELECT WritingID
 			FROM writing
-			WHERE Language=? AND ActivateStatus=1";
+			WHERE
+				(
+					SELECT COUNT(1)
+					FROM active_app
+					WHERE MaestroID=? AND AppID=200
+				)=1 AND Language=? AND ActivateStatus=1";
 		$stmt = $this->mysqli->prepare($query);
-		$stmt->bind_param("s", $language);
+		$stmt->bind_param("ss", $maestroID, $language);
 		$stmt->execute();
 		$stmt->bind_result($writingID);