diff --git a/modeles/Connection.php b/modeles/Connection.php
new file mode 100644
index 0000000..19ed707
--- /dev/null
+++ b/modeles/Connection.php
@@ -0,0 +1,34 @@
+<?php
+
+	class Connection extends PDO { 
+
+		private $stmt;
+
+		public function __construct(string $dsn, string $username, string $password) { 
+
+		parent::__construct($dsn,$username,$password); 
+		$this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+		} 
+		
+
+		/** * @param string $query 
+			 * @param array $parameters * 
+			 * @return bool Returns `true` on success, `false` otherwise 
+		*/ 
+
+		public function executeQuery(string $query, array $parameters = []) : bool{ 
+			$this->stmt = parent::prepare($query); 
+			foreach ($parameters as $name => $value) { 
+			$this->stmt->bindValue($name, $value[0], $value[1]); 
+			} 
+
+			return $this->stmt->execute(); 
+		}
+
+		public function getResults() : array {
+		return $this->stmt->fetchall();
+
+		}
+	}
+
+?>
\ No newline at end of file
diff --git a/modeles/Gateways/ListeGateway.php b/modeles/Gateways/ListeGateway.php
new file mode 100644
index 0000000..d082a7a
--- /dev/null
+++ b/modeles/Gateways/ListeGateway.php
@@ -0,0 +1,96 @@
+<?php
+
+require_once("Connection.php");
+
+class ListeGateway {
+    private $co;
+
+    public function __construct(Connection $co) { 
+        $this->co = $co; 
+    } 
+
+    public function getByCreator(int $idUsr) : array {
+        $listes = null;
+        $taches = null;
+        if(!empty($idUsr)){
+            try {
+                $co = $this->co;
+
+                $query = "SELECT idListe FROM HasList WHERE idUser=:idUser";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR)));
+
+                $results = $co->getResults();
+
+                Foreach($results as $row){
+                    $idListe = $row['idListe'];
+                    $queryTaches = "SELECT t.* FROM Tache t, HasTache h WHERE t.id=h.idTache AND h.idListe=:idListe";
+                    $co->executeQuery($queryTaches, array(':idListe' => array($idListe, PDO::PARAM_STR)));
+                    $resultsTaches = $co->getResults();
+
+                    Foreach($resultsTaches as $rowTaches){
+                        $taches[] = new Tache($rowTaches['id'], $rowTaches['intitule'], $rowTaches['isCompleted'], $rowTaches['description']);
+                    }
+
+                    $listes[] = new Liste($row['id'], $row['nom'], $taches);
+                    $taches = null;
+                }
+            }
+            catch(PDOException $Exception) {
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+        return $listes;
+    }
+
+    public function creerTache(int $id, string $intitule, boolean $isCompleted){
+        if(!empty($id) && !empty($intitutle)){
+            try{
+                $co = $this->co;
+
+                $query = "INSERT INTO Tache VALUES (:id, :intitule, :isCompleted)";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR), ':intitule' => array($nom, PDO::PARAM_STR), ':isCompleted' => array($taches, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+
+    public function delTache(int $id){
+        if(!empty($id)){
+            try{
+                $co = $this->co;
+
+                $query = "DELETE FROM Tache WHERE id=:id";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+
+    public function completeTache(int $id){
+        if(!empty($id)){
+            try{
+                $co = $this->co;
+
+                $query = "UPDATE Tache SET isCompleted=true WHERE id=:id";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/modeles/Gateways/UserGateway.php b/modeles/Gateways/UserGateway.php
new file mode 100644
index 0000000..9dadc5a
--- /dev/null
+++ b/modeles/Gateways/UserGateway.php
@@ -0,0 +1,152 @@
+<?php
+
+require_once("Connection.php");
+require_once("Utilisateur.php");
+
+class UserGateway {
+    private $co;
+
+    public function __construct(Connection $co) { 
+        $this->co = $co; 
+    } 
+
+    public function creerUtilisateur(int $id, string $nom, string $pwd){
+        if(!empty($id) && !empty($nom) && empty($password)){
+            try{
+                $co = $this->co;
+
+                $query = "INSERT INTO Utilisateur VALUES (:id, :nom, :pwd)";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR), ':nom' => array($nom, PDO::PARAM_STR), ':pwd' => array($pwd, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Excception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+
+    public function delUtilisateur(int $id){
+        if(!empty($id)){
+            try{
+                $co = $this->co;
+
+                $query = "DELETE FROM Utilisateur WHERE id=:id";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+
+    public function putUtilisateur(Utilisateur $usr){
+        if(!empty($usr.getId()) && !empty($usr.getNom()) && empty($usr.getPassword())){
+            try{
+                $co = $this->co;
+
+                $updateQuery = "UPDATE Utilisateur SET id=:id AND nom=:nom AND pwd=:pwd";
+                $deleteQuery = "DELETE FROM HasList WHERE user=:id AND liste=:liste";
+                $insertQuery = "INSERT INTO HasList VALUES (:id, :liste)";
+
+                $co->executeQuery($updateQuery, array(':id' => array($usr.getId(), PDO::PARAM_STR), ':nom' => array($usr.getNom(), PDO::PARAM_STR), ':pwd' => array($usr.getPassword(), PDO::PARAM_STR)));            
+                foreach($usr.getListListe() as $l){
+                    $co->executeQuery($deleteQuery, array(':id' => array($usr.getId(), PDO::PARAM_STR), ':liste' => array($l, PDO::PARAM_STR)));
+                    $co->executeQuery($insertQuery, array(':id' => array($usr.getId(), PDO::PARAM_STR), ':liste' => array($l, PDO::PARAM_STR)));
+                }
+                
+            }
+
+            catch(PDOException $Excception){
+                echo 'erreur';
+                echo $Excception->getMesage();
+            }
+        }
+    }
+
+    public function getUtilisateurById(int $id) : Utilisateur {
+        $usr = null;
+        if(!empty($id)){
+            try{
+                $co = $this->co;
+
+                $query = "SELECT * FROM Utilisateur WHERE id=:id";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR)));
+
+                $results = $co->getResults();
+
+                Foreach($results as $row){
+                    $usr = new Utilisateur($row['id'], $row['nom'], $row['pwd']);
+                }
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+
+        }
+        return $usr;
+    }
+
+    public function getUtilisateurbyNameAndPassword(string $nom, string $pwd) : Utilisateur {
+        $usr = null;
+        if(!empty($nom) && !empty($password)){
+            try{
+                $co = $this->co;
+
+                $query = "SELECT * FROM Utilisateur WHERE nom=:nom AND pwd=:pwd";
+
+                $co->executeQuery($query, array(':nom' => array($nom, PDO::PARAM_STR), ':pwd' => array($pwd, PDO::PARAM_STR)));
+
+                $results = $co->getResults();
+
+                Foreach($results as $row){
+                    $usr = new Utilisateur($row['id'], $row['nom'], $row['pwd']);
+                }
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+        return $usr;
+    }
+
+    public function creerListe(int $id, string $nom){
+        if(!empty($id) && !empty($nom)){
+            try{
+                $co = $this->co;
+
+                $query = "INSERT INTO Liste VALUES (:id, :nom, :taches)";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR), ':nom' => array($nom, PDO::PARAM_STR), ':taches' => array($taches, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+
+    public function delListe(int $id){
+        if(!empty($id)){
+            try{
+                $co = $this->co;
+
+                $query = "DELETE FROM Tache WHERE id=:id";
+
+                $co->executeQuery($query, array(':id' => array($id, PDO::PARAM_STR)));
+            }
+            catch(PDOException $Exception){
+                echo 'erreur';
+                echo $Exception->getMessage();
+            }
+        }
+    }
+
+}
+
+?>
\ No newline at end of file
diff --git a/modeles/Métier/Liste.php b/modeles/Métier/Liste.php
new file mode 100644
index 0000000..10f104f
--- /dev/null
+++ b/modeles/Métier/Liste.php
@@ -0,0 +1,27 @@
+<?php
+
+class Liste {
+    private int $id;
+    private string $nom;
+    private $taches;
+
+    function __construct(int $i, string $n, $t){
+        $this->id=$i;
+        $this->nom=$n;
+        $this->taches=$t;
+    }
+
+    function get_id(): int {
+        return $this->id;
+    }
+
+    function get_nom(): string {
+        return $this->nom;
+    }
+
+    function get_taches(): array {
+        return $this->taches;
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/modeles/Métier/Tache.php b/modeles/Métier/Tache.php
new file mode 100644
index 0000000..1e22090
--- /dev/null
+++ b/modeles/Métier/Tache.php
@@ -0,0 +1,33 @@
+<?php
+
+Class Tache {
+    private int $id;
+    private string $intitule;
+    private boolean $isCompleted;
+    private string $description;
+
+    function __construct(int $i, string $in, boolean $is, string $desc){
+        $this->id = $i;
+        $this->intitule = $in;
+        $this->isCompleted = $is;
+        $this->description = $desc;
+    }
+
+    function get_id(): int {
+        return $this->id;
+    }
+
+    function get_intitule(): string {
+        return $this->intitule;
+    }
+
+    function get_isCompleted(): boolean {
+        return $this->isCompleted;
+    }
+
+    function get_description(): string {
+        return $this->description;
+    }
+}
+
+?>
\ No newline at end of file
diff --git a/modeles/Métier/Utilisateur.php b/modeles/Métier/Utilisateur.php
new file mode 100644
index 0000000..72bf17f
--- /dev/null
+++ b/modeles/Métier/Utilisateur.php
@@ -0,0 +1,30 @@
+<?php
+
+Class Utilisateur {
+    private int $id;
+    private string $nom;
+    private string $password;
+    private $listListe;
+
+    function __construct(int $i, string $n, string $p, $liste) {
+        $this->id=$i;
+        $this->nom=$n;
+        $this->password=$p;
+        $this->listListe=$liste;
+    }
+    function get_id(): int {
+        return $this->id;
+    }
+    function get_nom(): string {
+        return $this->nom;
+    }
+    function get_password(): string {
+        return $this->password;
+    }
+    function get_listListe(){
+        return $this->get_listListe;
+    }
+}
+
+
+?>
\ No newline at end of file
diff --git a/modeles/blbl b/modeles/blbl
deleted file mode 100644
index e69de29..0000000
diff --git a/userController.php b/userController.php
deleted file mode 100644
index 7594872..0000000
--- a/userController.php
+++ /dev/null
@@ -1,40 +0,0 @@
-<?php
-
-class UserController{
-    
-    public function __construct() {
-
-        // Code du controlleur
-
-
-        //On démarre la session
-        session_sart();
-
-
-        try{
-            $action = $_REQUEST['action'];
-            switch($action){
-                case NULL:
-                    $this->action();
-                    break;
-                case "connection":
-                    $this->connection(/* valeurs du login et du mdp dans le formulaire */);
-                    break;
-            }catch(PDOException $e){
-                $dataView[]="Erreur inatendue";
-                require(__DIR__.'/../vues/erreur.php');
-            }
-        }
-    }
-
-    public function connection(string $login, string $password){
-        
-        /* Doit faire:
-            * vider les input du formulaire
-            * vérifier avec la bd qu'il y a bien un user 
-        */
-
-    }
-}
-
-?>
\ No newline at end of file