Easy categorizing with Symfony2, gist #6.

gistfile1.aw

<?php

namespace Application\Bundle\AssortmentBundle\Form\Type;

use Sylius\Bundle\AssortmentBundle\Form\Type\ProductFormType as BaseProductFormType;
use Symfony\Component\Form\FormBuilder;

class ProductFormType extends BaseProductFormType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        parent::buildForm($builder, $options);
        
        $builder
            ->add('category', 'sylius_catalog_category_choice', array(
                'multiple'	=> false,
                'catalog_alias' => 'assortment'
            ))
        ;
    }
}