Implement image upload

config/services.yaml

@@ -10,6 +10,8 @@ services:
     _defaults:
         autowire: true      # Automatically injects dependencies in your services.
         autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.
+        bind:
+            $photoDir: "%kernel.project_dir%/public/uploads/photos"
 
     # makes classes in src/ available to be used as services
     # this creates a service per class whose id is the fully-qualified class name

src/Controller/AppController.php

@@ -39,7 +39,7 @@ class AppController extends AbstractController
     }
 
     #[Route('/new', name: 'new_listing')]
-    public function new_listing(Request $request): Response
+    public function new_listing(Request $request, string $photoDir): Response
     {
         $offering = new Offering();
         $form = $this->createForm(OfferingFormType::class, $offering);
@@ -51,6 +51,18 @@ class AppController extends AbstractController
             $offering->setByUser($user);
             $offering->setCreatedAt(new \DateTime());
 
+            if ($photo = $form['photo']->getData()) {
+                $filename = bin2hex(random_bytes(6)).'.'.$photo->guessExtension();
+                try {
+                    $photo->move($photoDir, $filename);
+                } catch (FileException $e) {
+                    // unable to upload the photo, give up
+                    $this->addFlash("error", "There was an error uploading the photo: ".$e);
+                    return $this->redirectToRoute('new_listing');
+                }
+                $offering->setPhotoFilename($filename);
+            }
+
             $this->entityManager->persist($offering);
             $this->entityManager->flush();
 
@@ -63,4 +75,12 @@ class AppController extends AbstractController
             'offering_form' => $form->createView(),
         ]);
     }
+
+    #[Route('/offer/{id}', name: 'show_offer')]
+    public function offer(): Response
+    {
+        return $this->render('app/offer.html.twig', [
+            'offer' => $this->getOffering(),
+        ]);
+    }
 }

templates/app/new_listing.html.twig

@@ -1,6 +1,12 @@
 {% extends 'base.html.twig' %}
 
 {% block body %}
+    {% for message in app.flashes('error') %}
+    <div class="alert alert-error" role="alert">
+        {{ message }}
+    </div>
+    {% endfor %}
+
     <h1 class="mb-3">Add new offering</h1>
     {{ form(offering_form) }}
 {% endblock %}