php - Multiple Upload Symfony2 -

i'm beginning symfony , i'm stuck multiple upload.

i can upload 1 file , try modify code multiple upload.

here's error :

expected argument of type "symfony\component\httpfoundation\file\uploadedfile", "array" given 

here's code :

imagearticletype:

$builder         ->add('file', 'file', array('label' => 'choisir mes images', 'multiple'=> true))     ; 

and entity imagearticle.php

<?php  namespace ad\platformbundle\entity;  use doctrine\orm\mapping orm; use symfony\component\httpfoundation\file\uploadedfile; use symfony\component\validator\constraints assert;  /**  * imagearticle  *  * @orm\table()  * @orm\entity()  * @orm\haslifecyclecallbacks  */ class imagearticle {     /**      * @var integer      *      * @orm\column(name="id", type="integer")      * @orm\id      * @orm\generatedvalue(strategy="auto")      */     private $id;      /**      * @var string      *      * @orm\column(name="url", type="string", length=255)      */     private $url;      /**      * @var string      *      * @orm\column(name="alt", type="string", length=255)      */     private $alt;      /**      * @var file      *        * @assert\file(      *     maxsize = "1m",      *     mimetypes = {      *          "image/jpeg",       *          "image/gif",       *          "image/png",       *          },      *     maxsizemessage = "la taille maximum du fichier doit etre inférieur ou égale à 1mb. pour reduire sa taille vous pouvez utiliser le site : compressjpeg.com",      *     mimetypesmessage = "seulement les fichiers .jpeg / .gif /.png sont acceptés"      * )      */     private $file;      private $tempfilename;      public function getfile()     {            return $this->file;     }      public function setfile(uploadedfile $file)     {          $this->file = $file;          if (null !== $this->url)         {             $this->tempfilename = $this->url;             $this->url=null;             $this->alt=null;         }     }     /**      * id      *      * @return integer      */     public function getid()     {         return $this->id;     }      /**      * set url      *      * @param string $url      *      * @return imagearticle      */     public function seturl($url)     {         $this->url = $url;          return $this;     }      /**      * url      *      * @return string      */     public function geturl()     {         return $this->url;     }      /**      * set alt      *      * @param string $alt      *      * @return imagearticle      */     public function setalt($alt)     {         $this->alt = $alt;          return $this;     }      /**      * alt      *      * @return string      */     public function getalt()     {         return $this->alt;     }      /**      * @orm\prepersist()      * @orm\preupdate()      */     public function preupload()     {         if (null === $this->file)         {             return;         }           //on add un extension pour le fichier.         $this->url = $this->file->guessextension();         //le alt est le nom du fichier du client.         $this->alt=  $this->file->getclientoriginalname();      }      /**      *       * @orm\postpersist()      * @orm\postupdate()      *       */     public function upload()     {         if(null=== $this->file)         {             return;         }          //si ancien fichier on supprime         if(null !== $this->tempfilename)         {             $oldfile = $this->getuploadrootdir().'/'.$this->id.'.'.$this->tempfilename;             if (file_exists($oldfile))             {                 unlink($oldfile);             }         }          //on deplace         $this->file->move         (             $this->getuploadrootdir(),             $this->id.'.'.$this->url             );     }      /**      *@orm\preremove()      */     public function preremoveupload()     {         $this->tempfilename = $this->getuploadrootdir().'/'.$this->id.'.'.$this->url;     }      /**      *       * @orm\postremove()      */     public function removeupload()     {         if(file_exists($this->tempfilename))         {             unlink($this->tempfilename);         }     }     public function getuploaddir()     {         return 'upload/img/';     }      protected function getuploadrootdir()     {         return __dir__.'/../../../../web/'.$this->getuploaddir();     }      public function __tostring()     {         return $this->getuploaddir().$this->id.'.'.$this->geturl();     }      /**      * set source      *      * @param string $source      *      * @return image      */ } 

i thinking simple foreach loop doesn't work...

uploading files multiple option can little bit tricky. multiple = false option $file property in entity class return single uploadedfile instance, multiple = true returns array of uploadedfile instances when call $entity->getfile(). that's why have implement upload process manually, on form submission, in action, without lifecycle callbacks. this:

action:

.... $image = new imagearticle();  $form = $this->createform('your_form', $image); $form->handlerequest($request);  if ($form->isvalid()) {     ...      foreach ($image->getfile() $uploadedfile) {         $image = new imagearticle();         $image             // setters go here         ;          // upload process go here          $image->setfile(null);     }      $this->get('doctrine.orm.entity_manager')->flush();      .... } 

here screenshot project: