Ajoute un champs tokenKey sur la table User

* Suis le tuto:
  https://symfony.com/doc/3.4/security/guard_authentication.html#guard-auth-methods

src/PotageBundle/Entity/User.php

@@ -42,13 +42,19 @@ class User extends BaseUser
      */
     private $utilisateur;
     
+    /**
+     * @ORM\Column(type="string", unique=true, length=50)
+     */
+    private $tokenKey;
+    
     /**
      * User constructor.
      */
     public function __construct()
     {
         parent::__construct();
-        // your own logic
+        
+        $this->tokenKey = bin2hex(random_bytes(20));
     }
 
     /**
@@ -96,4 +102,26 @@ class User extends BaseUser
     {
         return parent::getUsername() . '  ( ' . parent::getEmail() . ' )';
     }
+    
+    /**
+     * Set tokenKey
+     *
+     * @return User
+     */
+    public function setTokenKey()
+    {
+        $this->tokenKey = bin2hex(random_bytes(20));
+
+        return $this;
+    }
+
+    /**
+     * Get tokenKey
+     *
+     * @return string
+     */
+    public function getTokenKey()
+    {
+        return $this->tokenKey;
+    }
 }