UploadableBundle

Install via Composer:

Enable in your AppKernel.php:

Add annotation to your entity:

use Youshido\UploadableBundle\Annotations as Youshido;
class Post
{
 
 /**
 * @var string
 *
 * @ORM\Column(name="path", type="string", length=255)
 *
 * @Youshido\Uploadable(override="true", asserts={@Assert\File(
 * maxSize = "1024k",
 * mimeTypes = {"image/jpeg"},
 * mimeTypesMessage = "Please upload a valid Image"
 * )})
 */
 private $path;

Use in controller:

$post = new Post();
$form = $this->createFormBuilder($post, ['action' => $this->generateUrl('example1')])
 ->add('path', 'youshido_file', ['entity_class' => 'AppBundle\Entity\Post'])
 ->add('submit', 'submit')
 ->getForm();
$form->handleRequest($request);
if($form->isValid()){
 $this->getDoctrine()->getManager()->persist($post);
 $this->getDoctrine()->getManager()->flush();
}

if($request->getMethod() == 'POST'){
 if($file = $request->files->get('path')){
 if($post = $this->getDoctrine()->getRepository('AppBundle:Post')->find($id)){
 $this->get('youshido.uploadable.enity_manager')
 ->saveFile($post, 'path', $file, true);
 }
 }
}