From 98f4356fbec9a12b0a058c9c272f78c2dc501906 Mon Sep 17 00:00:00 2001
From: Serreau Jovann <jovann@siteconseil.fr>
Date: Fri, 20 Mar 2026 15:54:26 +0100
Subject: [PATCH] Display error message on 500 error page

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 src/EventListener/ExceptionListener.php       | 5 ++++-
 templates/error/500.html.twig                 | 7 ++++++-
 tests/EventListener/ExceptionListenerTest.php | 6 +++---
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/src/EventListener/ExceptionListener.php b/src/EventListener/ExceptionListener.php
index 85e4e9e..20e2d40 100644
--- a/src/EventListener/ExceptionListener.php
+++ b/src/EventListener/ExceptionListener.php
@@ -34,7 +34,10 @@ class ExceptionListener
         }
 
         $response = new Response(
-            $this->twig->render($template, ['status_code' => $statusCode]),
+            $this->twig->render($template, [
+                'status_code' => $statusCode,
+                'error_message' => $exception->getMessage(),
+            ]),
             $statusCode,
         );
 
diff --git a/templates/error/500.html.twig b/templates/error/500.html.twig
index fe51320..7d0207a 100644
--- a/templates/error/500.html.twig
+++ b/templates/error/500.html.twig
@@ -13,7 +13,12 @@
             <div class="border-4 border-gray-900 bg-white shadow-[6px_6px_0px_rgba(0,0,0,1)] p-12">
                 <div class="text-8xl font-black uppercase tracking-tighter mb-4">{{ status_code }}</div>
                 <h1 class="text-3xl font-black uppercase tracking-tighter italic mb-4">Erreur serveur</h1>
-                <p class="font-bold text-gray-500 italic mb-8">Une erreur inattendue s'est produite. Nos equipes ont ete notifiees.</p>
+                <p class="font-bold text-gray-500 italic mb-4">Une erreur inattendue s'est produite. Nos equipes ont ete notifiees.</p>
+                {% if error_message is defined and error_message %}
+                <div class="card-brutal-red mb-8">
+                    <p class="text-sm font-mono break-all">{{ error_message }}</p>
+                </div>
+                {% endif %}
                 <a href="/" class="btn-brutal font-black uppercase text-sm tracking-widest hover:bg-indigo-600 hover:text-white transition-all">
                     Retour a l'accueil
                 </a>
diff --git a/tests/EventListener/ExceptionListenerTest.php b/tests/EventListener/ExceptionListenerTest.php
index 372103e..f19bcfb 100644
--- a/tests/EventListener/ExceptionListenerTest.php
+++ b/tests/EventListener/ExceptionListenerTest.php
@@ -43,7 +43,7 @@ class ExceptionListenerTest extends TestCase
         $twig = $this->createMock(Environment::class);
         $twig->expects(self::once())
             ->method('render')
-            ->with('error/404.html.twig', ['status_code' => 404])
+            ->with('error/404.html.twig', ['status_code' => 404, 'error_message' => 'Not found'])
             ->willReturn('<h1>404</h1>');
 
         $listener = new ExceptionListener($twig, 'prod');
@@ -61,7 +61,7 @@ class ExceptionListenerTest extends TestCase
         $twig = $this->createMock(Environment::class);
         $twig->expects(self::once())
             ->method('render')
-            ->with('error/500.html.twig', ['status_code' => 500])
+            ->with('error/500.html.twig', ['status_code' => 500, 'error_message' => 'Server error'])
             ->willReturn('<h1>500</h1>');
 
         $listener = new ExceptionListener($twig, 'prod');
@@ -78,7 +78,7 @@ class ExceptionListenerTest extends TestCase
         $twig = $this->createMock(Environment::class);
         $twig->expects(self::once())
             ->method('render')
-            ->with('error/500.html.twig', ['status_code' => 403])
+            ->with('error/500.html.twig', ['status_code' => 403, 'error_message' => 'Forbidden'])
             ->willReturn('<h1>403</h1>');
 
         $listener = new ExceptionListener($twig, 'prod');