backend/src/app.py

@@ -98,9 +98,13 @@ def login():
     req = flask.request.get_json(force=True)
     username = req.get('username', None)
     password = req.get('password', None)
-    user = guard.authenticate(username, password)
-    ret = {'access_token': guard.encode_jwt_token(user)}
-    return ret, 200
+    try:
+        user = guard.authenticate(username, password)
+        ret = {'access_token': guard.encode_jwt_token(user)}
+        return ret, 200
+    except flask_praetorian.exceptions.AuthenticationError:
+        ret = {'message': "Benutzername und Passwort stimmen nicht überein"}
+        return ret, 401
 
 
 @app.route('/api/refresh', methods=['POST'])

frontend/src/components/pages/Login.js

@@ -17,7 +17,6 @@ export default function Login() {
       username: username,
       password: password,
     };
-    console.log(opts);
     fetch("/api/login", {
       method: "post",
       body: JSON.stringify(opts),
@@ -27,6 +26,7 @@ export default function Login() {
         if (token.access_token) {
           login(token);
         } else {
+          // TODO: add text if the login is not correct
           console.log("Please type in the correct username / password");
         }
       });