Symfony File Upload

Controller.php

// Porzione del controller che valida il form di upload

if ($form->isValid()) {
    $em = $this->getDoctrine()->getEntityManager();

    $document->upload();

    $em->persist($document);
    $em->flush();

    $this->redirect('...');
}

Document.php

// src/Acme/DemoBundle/Entity/Document.php
namespace Acme\DemoBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ORM\Entity
 */
class Document
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    public $id;

    /**
     * @ORM\Column(type="string", length=255)
     * @Assert\NotBlank
     */
    public $name;

    /**
     * @ORM\Column(type="string", length=255, nullable=true)
     */
    public $path;

    /**
     * @Assert\File(maxSize="6000000")
     */
    public $file;

    public function upload()
    {
        // the file property can be empty if the field is not required
        if (null === $this->file) {
            return;
        }
    
        // we use the original file name here but you should
        // sanitize it at least to avoid any security issues
    
        // move takes the target directory and then the target filename to move to
        $this->file->move($this->getUploadRootDir(), $this->file->getClientOriginalName());
    
        // set the path property to the filename where you'ved saved the file
        $this->setPath($this->file->getClientOriginalName());
    
        // clean up the file property as you won't need it anymore
        $this->file = null;
    }

    public function getAbsolutePath()
    {
        return null === $this->path ? null : $this->getUploadRootDir().'/'.$this->path;
    }

    public function getWebPath()
    {
        return null === $this->path ? null : $this->getUploadDir().'/'.$this->path;
    }

    protected function getUploadRootDir()
    {
        // the absolute directory path where uploaded documents should be saved
        return __DIR__.'/../../../../web/'.$this->getUploadDir();
    }

    protected function getUploadDir()
    {
        // get rid of the __DIR__ so it doesn't screw when displaying uploaded doc/image in the view.
        return 'uploads/documents';
    }
}