/**
  * Set a pic from an url into the event
  */
 public function addPicFile(Event $event, UploadedFile $picFile)
 {
     if (UPLOAD_ERR_OK != $picFile->getError()) {
         throw new \Exception($picFile->getErrorMessage());
     }
     if (!is_file($picFile->getPathname())) {
         throw new FileNotFoundException($picFile->getPathname());
     }
     $path = $picFile->move($this->targetPath . "/" . $event->getId(), $picFile->getClientOriginalName());
     $pic = new Pic();
     $pic->setUrl(str_replace($this->targetPath, $this->targetUrl, $path));
     $pic->setPath($path);
     $event->setPic($pic);
     $this->dm->persist($event);
     $this->dm->flush();
     return $event;
 }