Symfony2 Form Component. Support upload file through API call (e.g. in json, xml, etc.) as base64 encoded content .

ApiUploadedFile.php

<?php

namespace Infun\HttpFoundation\File;

use Symfony\Component\HttpFoundation\File\File;

class ApiUploadedFile extends File
{

    public function __construct($base64Content)
    {
        $filePath = tempnam(sys_get_temp_dir(), 'UploadedFile');
        $file = fopen($filePath, "w");
        stream_filter_append($file, 'convert.base64-decode');
        fwrite($file, $base64Content);
        $meta_data = stream_get_meta_data($file);
        $path = $meta_data['uri'];
        fclose($file);

        parent::__construct($path, true);
    }

}

Controller.php

<?php

namespace Infun\Controller;

use Symfony\Component\HttpFoundation\Request;
use Infun\Form\Type\PhotoFormType;
use Infun\HttpFoundation\File\ApiUploadedFile;

class Controller {
    protected $formFactory;
    /* ... */
    
    public function createAction(Request $request)
    {
        $data = $request->request->all();
        /* Process API Upload Request */
        if ($request->request->has('photo')) {
            $file = new ApiUploadedFile($request->request->get('photo'));
            $data['photo'] = $file;
        }
        
        $form = $this->formFactory->create(new PhotoFormType());
        $form->bind($data);

        if ($form->isValid()) {
            $photo = $form->get('photo')->getData();
            // do with $photo what you want
            /* ... */
            return $response;
        }
        /* ... */
        // Validation error
        return $response;
    }

}

PhotoFormType.php

<?php

namespace Infun\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\Validator\Constraints as Assert;

class PhotoFormType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
            ->add('photo', 'file', array(
                    'required' => true,
                    'constraints' => array(
                        new Assert\NotBlank(),
                        new Assert\Image(array(
                                'mimeTypes' => array('image/jpeg', 'image/png', 'image/x-png', 'image/pjpeg',),
                            )
                        ),
                    ),
                ))
        ;
    }
    /* ... */
}