Fix : postion d'un element nouvelement créer

ShopBundle/EventSubscriber/EditEventSubscriber.php

                                 $total = $entityRepo->count(array('status' => 1, 'parent' => $entity->getParent()->getId()));
                                 $entity->setPosition($entity->getParent()->getId() . '_' . $total);
                         } else {
-                                $total = $entityRepo->count(array('status' => 1, 'parent' => null));
+                                if ($entity instanceof FilterMerchantInterface) {
+                                        $total = $entityRepo->count(array('status' => 1, 'parent' => null, 'merchant' => $this->merchantUtils->getMerchantCurrent()));
+                                }else{
+                                        $total = $entityRepo->count(array('status' => 1, 'parent' => null));
+                                }
                                 $entity->setPosition($total);
                         }
                 } else {
-                        $total = $entityRepo->count(array('status' => 1));
+                        if ($entity instanceof FilterMerchantInterface) {
+                                $total = $entityRepo->count(array('status' => 1, 'merchant' => $this->merchantUtils->getMerchantCurrent()));
+                        }else{
+                                $total = $entityRepo->count(array('status' => 1));
+                        }
                         $entity->setPosition($total);
                 }
                 return $entity;