getFilterParameters对Sonata ModelAutocompleteType结果的影响

use Sonata\AdminBundle\Form\Type\ModelAutocompleteType;

class ProductAdmin extends AbstractAdmin
{
    protected function configureFormFields(FormMapper $formMapper)
    {
        $formMapper
            ->add('category', ModelAutocompleteType::class, [
                'property' => 'name',
                'multiple' => false,
                'minimum_input_length' => 2,
                'callback' => 'your_callback_function',
                'placeholder' => 'Select a category',
                'minimum_input_length' => 2,
                'req_params' => [
                    'filters' => $this->getFilterParameters(),
                ],
            ]);
    }

    protected function getFilterParameters()
    {
        // 设置过滤参数
        return [
            'category' => 'electronics',
        ];
    }
}