diff --git a/databaseOperations.php b/databaseOperations.php
index d662fbc..22e5e1b 100755
--- a/databaseOperations.php
+++ b/databaseOperations.php
@@ -310,4 +310,64 @@ function addEvent($db, $titre, $catArray, $localisation, $dtstart, $dtend, $desc
         die();
     }
 }
+
+function updateEvent($db, $id, $titre, $catArray, $localisation, $dtstart, $dtend, $description, $url, $urlImage, $contact)
+{
+    try
+    {
+        $db->beginTransaction();
+        $request = $db->prepare('UPDATE event SET event_tile=:title, event_localisation=:localisation, event_dtstart=:dstart, event_dtend=:dtend, event_description=:description, event_url=:url, event_urlImage=:urlImage, event_contact=:contact WHERE event_id=:id');
+        $request->execute(array('title'=>$titre,
+                                'localisation'=>$localisation,
+                                'dtend'=>date("Y-m-d H:i:s",$dtstart),
+                                'dstart'=>date("Y-m-d H:i:s",$dtend),
+                                'description'=>$description,
+                                'url'=>$url,
+                                'urlImage'=>$urlImage,
+                                'contact'=>$contact,
+                                'id'=>$id));
+        $request->closeCursor();
+        $request = $db->prepare('DELETE FROM eventCategorie WHERE event_id=:id');
+        $request->execute(array('id'=>$id));
+        $request->closeCursor();
+        $newEventId = $db->lastInsertId();
+        $request = $db->prepare('INSERT INTO eventCategorie(event_id, cat_id) VALUES(:eventId, :catId)');
+        foreach($catArray as $cat)
+        {
+            $request->execute(array('eventId'=>$newEventId,
+                                    'catId'=>$cat));
+        }
+        $db->commit();
+    }
+    catch(PDOException $e)
+    {
+        $db->rollBack();
+        //NOTE: change $e->getMessage() by an error message before going to production
+        echo($e->getMessage());
+        die();
+    }
+}
+
+function deleteEvent($db, $id)
+{
+    try
+    {
+        $db->beginTransaction();
+        $request = $db->prepare('DELETE FROM event WHERE event_id=:id');
+        $request->execute(array('id'=>$id));
+        $request->closeCursor();
+        $request = $db->prepare('DELETE FROM eventCategorie WHERE event_id=:id');
+        $request->execute(array('id'=>$id));
+        $request->closeCursor();
+        $db->commit();
+    }
+    catch(PDOException $e)
+    {
+        $db->rollBack();
+        //NOTE: change $e->getMessage() by an error message before going to production
+        echo($e->getMessage());
+        die();
+    }
+}
+
 ?>
diff --git a/editEvent.php b/editEvent.php
index d9a8c91..f8257f9 100644
--- a/editEvent.php
+++ b/editEvent.php
@@ -40,6 +40,7 @@ $event = getOneEvent($db, $id);
     <h1>Modifier un Évènement</h1>
 
     <form id="eventForm" name="eventForm" method="post" action="eventAdded.php" onsubmit="return verifyCheckbox();">
+      <input type="hidden" name="id" value="<?php echo $id; ?>">
       <div id="left">Titre :</div>
       <input type="text" name="title" value="<?php echo $event["event_title"]; ?>" required>
       <br>
@@ -87,7 +88,8 @@ $event = getOneEvent($db, $id);
       <div id="left">Contact :</div>
       <input type="text"  value="<?php echo $event["event_contact"];?>" name="contact">
       <br>
-      <div id="buttonDiv"><button id="submit">Modifier l'évènement !</button></div>
+      <div id="buttonDiv"><button id="submit">Modifier l'évènement !</button>
+      <button id="submit" action="alert('TODO');">Supprimer l'évènement !</button></div>
     </form>
 
 
diff --git a/eventAdded.php b/eventAdded.php
index a7026c6..ac6e3d7 100644
--- a/eventAdded.php
+++ b/eventAdded.php
@@ -11,7 +11,10 @@ $url = $_POST['site'];
 $urlImage = $_POST['urlImage'];
 $contact = $_POST['contact'];
 $catArray = $_POST['chk_group'];
+if(!isset($_POST['id'])
 addEvent($db, $titre, $catArray, $localisation, $dtstart, $dtend, $description, $url, $urlImage, $contact);
+else
+updateEvent($db, $id, $titre, $catArray, $localisation, $dtstart, $dtend, $description, $url, $urlImage, $contact);
 header('Location:./');
 exit;
 ?>