diff --git a/composer.lock b/composer.lock
index ac18170522f4680053a175359d84ff262a211ba5..bc5f67b3df3a3db5aeae74b43c6b72cf763b4b57 100644
--- a/composer.lock
+++ b/composer.lock
@@ -5394,16 +5394,16 @@
         },
         {
             "name": "symfony/validator",
-            "version": "v5.3.10",
+            "version": "v5.3.12",
             "source": {
                 "type": "git",
                 "url": "https://github.com/symfony/validator.git",
-                "reference": "a85f3ba9e1c883253fc00a2e3d111e6e82a0baf5"
+                "reference": "379ca8939ebcab78d835e188673396a9f8d6eee8"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/symfony/validator/zipball/a85f3ba9e1c883253fc00a2e3d111e6e82a0baf5",
-                "reference": "a85f3ba9e1c883253fc00a2e3d111e6e82a0baf5",
+                "url": "https://api.github.com/repos/symfony/validator/zipball/379ca8939ebcab78d835e188673396a9f8d6eee8",
+                "reference": "379ca8939ebcab78d835e188673396a9f8d6eee8",
                 "shasum": ""
             },
             "require": {
@@ -5484,7 +5484,7 @@
             "description": "Provides tools to validate values",
             "homepage": "https://symfony.com",
             "support": {
-                "source": "https://github.com/symfony/validator/tree/v5.3.10"
+                "source": "https://github.com/symfony/validator/tree/v5.3.12"
             },
             "funding": [
                 {
@@ -5500,7 +5500,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2021-10-28T19:22:18+00:00"
+            "time": "2021-11-22T22:24:25+00:00"
         },
         {
             "name": "symfony/var-dumper",
diff --git a/public/css/style.css b/public/css/style.css
index ea8ef7757b549c5eca69e70676c8dd967b913166..07170cd2f7e1493cecb863da98a4b9dac049aedf 100644
--- a/public/css/style.css
+++ b/public/css/style.css
@@ -215,4 +215,7 @@ main {
 
 select {
     display: inline;
+}
+.error_msg {
+  color: #e53935;
 }
\ No newline at end of file
diff --git a/src/Controller/DefaultController.php b/src/Controller/DefaultController.php
index 5597a691ad1e98f8494161c9393cfbfa3471cc4a..399ee173a60489de1d5b0efd8c18d0d6e7ae0cf9 100644
--- a/src/Controller/DefaultController.php
+++ b/src/Controller/DefaultController.php
@@ -6,6 +6,8 @@ use App\Entity\Evenement;
 use App\Entity\Participant;
 use App\Entity\Lieu;
 use App\Form\EvenementType;
+use App\Form\AddParticipantType;
+use App\Repository\ParticipantRepository;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\HttpFoundation\Request;
 use Symfony\Component\HttpFoundation\Response;
@@ -81,5 +83,46 @@ class DefaultController extends AbstractController
         ]);
     }
 
+    #[Route('/evenement/{id}/add?msg={msg}', name: 'event_add_participants', methods: ['GET', 'POST'])]
+    public function addParticipants(Evenement $event, Request $request, $msg = ''): Response
+    {
+      $participant = new Participant();
+      $form = $this->createForm(AddParticipantType::class, $participant);
+      $form->handleRequest($request);
+      if ($form->isSubmitted() && $form->isValid()) {
+          $repo = $this->getDoctrine()->getRepository(Participant::class);
+          $existingParticipant = $repo->findOneBy([
+            'email' => $participant->getEmail(),
+            'evenement' => $event,
+          ]);
+
+          if (empty($existingParticipant)) {
+            $em = $this->getDoctrine()->getManager();
+            $em->persist($participant);
+            $em->flush();
+            return $this->redirectToRoute('events');
+          } else {
+            return $this->redirectToRoute("event_add_participants", ["id" => $event->getId(), "msg" => "Ce participant participe déjà à l'évènement."]);
+          }
+
+      }
+      return $this->render('default/addParticipants.html.twig', [
+          'form' => $form->createView(),
+          'msg' => $msg
+      ]);
+    }
+
+    #[Route('/participant/{id}/delete', name: 'delete_participant', methods: ['GET', 'POST'])]
+    public function deleteParticipant(Participant $participant, Request $request): Response
+    {
+      
+      $em = $this->getDoctrine()->getManager();
+      $em->remove($participant);
+      $em->flush();
+      return $this->redirectToRoute('events');
+
+      return $this->render('default/exo1.html.twig' );
+    }
+
 
 }
diff --git a/src/Form/AddParticipantType.php b/src/Form/AddParticipantType.php
new file mode 100644
index 0000000000000000000000000000000000000000..8be143126c15f4c89279fb9b2bb56fa88937be6e
--- /dev/null
+++ b/src/Form/AddParticipantType.php
@@ -0,0 +1,33 @@
+<?php
+
+namespace App\Form;
+
+use App\Entity\Evenement;
+use App\Entity\Participant;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\Bridge\Doctrine\Form\Type\EntityType;
+
+class AddParticipantType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $builder
+            ->add('nom')
+            ->add('prenom')
+            ->add('email')
+            ->add('evenement', EntityType::class, [
+              'class' => Evenement::class,
+              'choice_label' => 'nom',
+            ])
+        ;
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'data_class' => Participant::class,
+        ]);
+    }
+}
diff --git a/templates/default/addParticipants.html.twig b/templates/default/addParticipants.html.twig
new file mode 100644
index 0000000000000000000000000000000000000000..51710602d6767b772baaa42247a041c7e07fd99f
--- /dev/null
+++ b/templates/default/addParticipants.html.twig
@@ -0,0 +1,15 @@
+{% extends 'base.html.twig' %}
+
+{% block title %}Evenement{% endblock %}
+
+{% block body %}
+    <h1>Ajouter des participants</h1>
+
+  {{ form_start(form) }}
+    {{ form_widget(form) }}
+    <button type="submit">Envoyer</button>
+  {{ form_end(form) }}
+
+  <p class="error_msg">{{ msg }}</p>
+
+{% endblock %}
diff --git a/templates/default/exo1bis.html.twig b/templates/default/exo1bis.html.twig
index b0fa3ea33d257efc2cfecdb9fd72a90c0bc87724..1caa392c8934cdac27ee01f88edb2ba0e99dcc27 100644
--- a/templates/default/exo1bis.html.twig
+++ b/templates/default/exo1bis.html.twig
@@ -24,7 +24,10 @@
                         <td>{{ evenement.image }}</td>
                         <td>{{ evenement.date | date('d/m/Y')}}</td>
                         <td>{{ evenement.lieu.nom }}</td>
-                        <td><a href="{{ path('event_show', { id: evenement.id }) }}">Voir</a></td>
+                        <td>
+                          <a href="{{ path('event_show', { id: evenement.id }) }}">Voir</a>
+                          | <a href="{{ path('event_add_participants', { id: evenement.id }) }}">add participant</a>
+                        </td>
                         {# <td> | <a href="{{ path('lieu_edit', { id: lieu.id }) }}">Modifier</a></td> #}
                     </tr>
                 {% endfor %}
diff --git a/templates/default/showEvent.html.twig b/templates/default/showEvent.html.twig
index c45fc53011b400b43b1f1d946e04420ff4523168..d31a5095daee26f65ca936335ab01f1f8a49117d 100644
--- a/templates/default/showEvent.html.twig
+++ b/templates/default/showEvent.html.twig
@@ -33,7 +33,12 @@
             </tr>
             <tr>
                 <th>Les Participants</th>
-                <td>{% for p in event.participants %}{{ p.nom }} {% endfor %}</td>
+                <td>
+                  {% for p in event.participants %}
+                    <p> {{ p.nom }} <a class="error_msg" href="{{ path('delete_participant', { id: p.id }) }}">Del</a> </p>
+                    
+                  {% endfor %}
+                </td>
             </tr>
         </tbody>
     </table>