How to display the current picture above the upload field in SonataAdminBundle?

Question

I am using SonataAdminBundle (with Doctrine2 ORM) and I have successfully added a file upload feature to my Picture model.

I would like, on the

Answer 1

Teo.sk wrote the method of showing images using VichUploader. I found an option which allow you to show images without this bundle.

First we need to create our form_type. There is tutorial: symfony_tutorial

In main Admin class:

namespace Your\Bundle;

//.....//

class ApplicationsAdmin extends Admin {

//...//

public function getFormTheme() {
    return array_merge(
        parent::getFormTheme(),
        array('YourBundle:Form:image_type.html.twig') //your path to form_type template
    );

protected function configureFormFields(FormMapper $formMapper)
{
     $formMapper->add('file_photo', 'image', array(
            'data_class' => 'Symfony\Component\HttpFoundation\File\File',
            'label' => 'Photo',
            'image_web_path' => $this->getRequest()->getBasePath().'/'.$subject->getWebPathPhoto()// it's a my name of common getWebPath method
        ))
        //....//
        ;
}

}

Next part is a code from ImageType class.

namespace Your\Bundle\Form\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\OptionsResolver\OptionsResolverInterface;
use Symfony\Component\OptionsResolver\Options;
use Symfony\Component\Form\FormView;
use Symfony\Component\Form\FormInterface;
use Symfony\Component\Form\FormBuilder;
use Symfony\Component\Form\FormBuilderInterface;


class ImageType extends AbstractType
{

    public function getParent()
    {
        return 'file';
    }

    public function getName()
    {
        return 'image';
    } 

    public function setDefaultOptions(OptionsResolverInterface $resolver)
    {
        $resolver->setDefaults(array(
            'image_web_path'         => ''
        ));
    }

    public function buildView(FormView $view, FormInterface $form, array $options)
    {
        $view->vars['image_web_path'] = $options['image_web_path'];
    }

    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder
             ->setAttribute('image_web_path', $options['image_web_path'])
        ;
    }
}

And on the end time for image_type twig template.

{% block image_widget %}
{% spaceless %}
    {% set type = type|default('file') %}
    
    
{% endspaceless %}
{% endblock %}

For me it's working! I'm also using avalanche bundle to resize images.