Added an system for showing flash messages to user.

src/Controller/DebugController.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ *
+ * part-db version 0.1
+ * Copyright (C) 2005 Christoph Lechner
+ * http://www.cl-projects.de/
+ *
+ * part-db version 0.2+
+ * Copyright (C) 2009 K. Jacobs and others (see authors.php)
+ * http://code.google.com/p/part-db/
+ *
+ * Part-DB Version 0.4+
+ * Copyright (C) 2016 - 2019 Jan Böhmer
+ * https://github.com/jbtronics
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
+ *
+ */
+
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\Routing\Annotation\Route;
+
+/**
+ * Class DebugController
+ * @package App\Controller
+ */
+class DebugController extends AbstractController
+{
+    /**
+     * @Route("/debug/flash_test")
+     */
+    public function flashTest()
+    {
+        $this->addFlash('success', 'Success Flash Message!');
+        $this->addFlash('error', 'Error Flash Message!');
+        $this->addFlash('warning', 'Warning Flash Message!');
+        $this->addFlash('notice', 'Notice Flash Message!');
+        $this->addFlash('info', 'Info Flash Message! <b>Test</b>');
+
+        $this->addFlash('testkjfd', 'Blabla. This message type should be not know to template!');
+
+        return $this->render("base.html.twig");
+    }
+}

src/Controller/PartController.php

@@ -42,6 +42,7 @@ use Doctrine\ORM\EntityManagerInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\Routing\Annotation\Route;
+use Symfony\Contracts\Translation\TranslatorInterface;
 
 class PartController extends AbstractController
 {
@@ -89,14 +90,12 @@ class PartController extends AbstractController
      *
      * @return \Symfony\Component\HttpFoundation\Response
      */
-    public function new(Request $request, EntityManagerInterface $em)
+    public function new(Request $request, EntityManagerInterface $em, TranslatorInterface $translator)
     {
         $new_part = new Part();
         $category = $em->find(Category::class, 1);
         $new_part->setCategory($category);
 
-        $this->addFlash('success', 'Article Created!');
-
         $form = $this->createForm(PartType::class, $new_part);
 
         $form->handleRequest($request);
@@ -106,7 +105,7 @@ class PartController extends AbstractController
             //$part = $form->getData();
             $em->persist($new_part);
             $em->flush();
-            $this->addFlash('success', 'Article Created! Knowledge is power!');
+            $this->addFlash('success', $translator->trans('part.created_flash'));
             return $this->redirectToRoute('part_edit',['id' => $new_part->getID()]);
         }