diff --git a/Project/php/model/AbsModel.php b/Project/php/model/AbsModel.php
new file mode 100644
index 0000000..e2d8739
--- /dev/null
+++ b/Project/php/model/AbsModel.php
@@ -0,0 +1,42 @@
+<?php
+
+namespace model;
+
+use gateway\UserGateway;
+
+class AbsModel
+{
+    protected UserGateway $gtw;
+    private string $role;
+
+    /**
+     * @param UserGateway $gtw
+     * @param string $role
+     */
+    public function __construct(UserGateway $gtw, string $role)
+    {
+        $this->gtw = $gtw;
+        $this->role = $role;
+    }
+
+    public function connection($login, $password){
+        $cleanedLogin = strip_tags($login);
+        $cleanedPassword = strip_tags($password);
+
+        $student = $this->gtw->findUserByLoginPassword($cleanedLogin, $cleanedPassword);
+
+        if ($student) {
+            session_start();
+            $_SESSION['role'] = $this->role;
+            $_SESSION['login'] = $cleanedLogin;
+            return true;
+        }
+        else return false;
+    }
+
+    public function deconnexion(){
+        session_unset();
+        session_destroy();
+        $_SESSION = array();
+    }
+}
\ No newline at end of file
diff --git a/Project/php/model/MdlAdmin.php b/Project/php/model/MdlAdmin.php
index 0646337..06c4801 100755
--- a/Project/php/model/MdlAdmin.php
+++ b/Project/php/model/MdlAdmin.php
@@ -2,36 +2,16 @@
 
 namespace model;
 
-class MdlAdmin
+use gateway\UserGateway;
+
+class MdlAdmin extends AbsModel
 {
     /**
-     * @param UserGateway userGtw
+     * @param UserGateway $userGtw
      */
     public function __construct(UserGateway $userGtw)
     {
-        $this->gtw = $gtw;
-    }
-
-    public function connection($login, $password){
-        $cleanedLogin = strip_tags($login);
-        $cleanedPassword = strip_tags($password);
-
-        $student = $this->gtw->findUserByLoginPassword($cleanedLogin, $cleanedPassword);
-
-        if ($student) {
-            session_start();
-            $_SESSION['role'] = 'admin';
-            $_SESSION['login'] = $cleanedLogin;
-            return true;
-        }
-        else return false;
-    }
-
-    public function deconnexion(){
-        session_unset();
-        session_destroy();
-        $_SESSION = array();
-
+        parent::__construct($userGtw, "admin");
     }
 
     public function isAdmin(){
diff --git a/Project/php/model/MdlStudent.php b/Project/php/model/MdlStudent.php
index e05230d..b012259 100755
--- a/Project/php/model/MdlStudent.php
+++ b/Project/php/model/MdlStudent.php
@@ -2,40 +2,18 @@
 
 namespace model;
 
-class MdlStudent
-{
-    protected UserGateway $gtw;
-
-    public function __construct($gtw){
-        $this->gtw = $gtw;
-
-    }
-    public function connection($login, $mdp){
-        // 1. Nettoyage des données (vous pouvez utiliser des méthodes de nettoyage spécifiques)
-        $cleanedLogin = strip_tags($login);
-        $cleanedPassword = strip_tags($mdp);
-
-        // 2. Appel Gateway pour vérifier les identifiants dans la base de données
-        $student = $this->gtw->findUserByLoginPassword($cleanedLogin,$cleanedPassword);
+use gateway\UserGateway;
 
-        if ($student) {
-            // L'authentification a réussi, ajouter le rôle et le login à la session
-            session_start();
-            $_SESSION['role'] = 'student'; // Vous pouvez définir le rôle approprié
-            $_SESSION['login'] = $cleanedLogin;
-            return true;
-        } else {
-            throw Exception('problème d\'authentification');
-            return false;
-        }
+class MdlStudent extends AbsModel
+{
+    /**
+     * @param UserGateway $gtw
+     */
+    public function __construct(UserGateway $gtw)
+    {
+        parent::__construct($gtw, "student");
     }
 
-    public function deconnexion(){
-        session_unset();
-        session_destroy();
-        $_SESSION = array();
-
-    }
 /*
     public function isStudent(){
         if( isset ($_SESSION['login']) && isset ($_SESSION['role'])){