error message if message too short

app/Web/Controllers/ContactController.php

@@ -2,9 +2,23 @@
 
 namespace App\Web\Controllers;
 
+use Illuminate\Http\Request;
+
+use Antadis\API\Front\Exceptions\HttpBadRequestException;
 use Antadis\API\Front\Web\Controllers\ContactController as BaseContactController;
 
+use ApiTools;
+
 class ContactController extends BaseContactController
 {
+
+    public function create(Request $request) {
+        $msg = ApiTools::getValue('msg', false);
+
+        if (strlen($msg) < 20) {
+            throw new HttpBadRequestException('Votre message doit contenir plus de 20 caractères.');
+        }
+        return parent::create($request);
+    }
 }