Made user for UserAttribut optional

application/symfony/src/Attribut/UserAttribut.php

@@ -7,21 +7,37 @@ use App\Entity\UserInterface;
 
 /**
  * @author kevinfrantz
+ *
+ * @see UserAttributInterface
  */
 trait UserAttribut
 {
     /**
-     * @var User
+     * @var User|null
      */
     protected $user;
 
+    /**
+     * @param UserInterface $user
+     */
     public function setUser(UserInterface $user): void
     {
         $this->user = $user;
     }
 
+    /**
+     * @return UserInterface
+     */
     public function getUser(): UserInterface
     {
         return $this->user;
     }
+
+    /**
+     * @return bool
+     */
+    public function hasUser(): bool
+    {
+        return isset($this->user);
+    }
 }

application/symfony/src/Attribut/UserAttributInterface.php

@@ -9,7 +9,18 @@ use App\Entity\UserInterface;
  */
 interface UserAttributInterface
 {
+    /**
+     * @param UserInterface $user
+     */
     public function setUser(UserInterface $user): void;
 
+    /**
+     * @return UserInterface
+     */
     public function getUser(): UserInterface;
+
+    /**
+     * @return bool Returns if a user is set
+     */
+    public function hasUser(): bool;
 }