Sylius product filter by taxons

product-2.yml

# SyliusShopBundle/config/routing/product.yml
sylius_shop_product_index:
    path: /taxons/{slug}
    methods: [GET]
    defaults:
        _controller: sylius.controller.product:indexAction
        _sylius:
            template: "@SyliusShop/Product/index.html.twig"
            grid: sylius_shop_custom_filter
    requirements:
        slug: .+

product.yml

# SyliusShopBundle/config/grids/product.yml
sylius_shop_custom_filter:
            driver:
                name: doctrine/orm
                options:
                    class: "%sylius.model.product.class%"
                    repository:
                        method: customCreateShopListQueryBuilder
                        arguments:
                            channel: "expr:service('sylius.context.channel').getChannel()"
                            #taxon: "expr:notFoundOnNull(service('sylius.repository.taxon').findOneBySlug($slug, service('sylius.context.locale').getLocaleCode()))"
                            locale: "expr:service('sylius.context.locale').getLocaleCode()"
                            sorting: "expr:service('request_stack').getCurrentRequest().get('sorting', [])"
            #sorting:
            #    position: asc
            limits: [9, 18, 27]
            fields:
                createdAt:
                    type: datetime
                    sortable: ~
                position:
                    type: string
                    #sortable: productTaxon.position
                name:
                    type: string
                    sortable: translation.name
                price:
                    type: int
                    sortable: channelPricing.price
            filters:
                #search: # if you not need in keyword searching
                #    type: string
                #    label: false
                #    options:
                #        fields: [translation.name]
                #    form_options:
                #        type: contains
                taxon:
                    type: taxon_checkboxes
    templates:
        filter:
            taxon_checkboxes: 'AppBundle:Grid/Filter:taxon_filter.html.twig'

services.yml

services:
    app.grid.filter.taxon_checkboxes:
        class: AppBundle\Grid\Filter\TaxonsFilter
        tags:
            - { name: sylius.grid_filter, type: taxon_checkboxes, form-type: AppBundle\Form\Type\Filter\TaxonsCheckboxType }

taxon_filter.html.twig

{% form_theme form '@App/custom_theme.html.twig' %}

{{ form_row(form.id) }}

TaxonsCheckboxType.php

<?php

namespace AppBundle\Form\Type\Filter;

use Sylius\Component\Core\Model\Taxon;
use Symfony\Bridge\Doctrine\Form\Type\EntityType;
use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

class TaxonsCheckboxType extends AbstractType {
    public function buildForm(FormBuilderInterface $builder, array $options) {
        $builder
            ->add('id', EntityType::class, [
                    'class' => Taxon::class,
                    'expanded' => TRUE,
                    'multiple' => TRUE,
                    'label' => false
            ])
        ;
    }
}

TaxonsFilter.php

<?php

namespace AppBundle\Grid\Filter;

use Doctrine\ORM\EntityManager;
use Sylius\Bundle\ResourceBundle\Doctrine\ORM\EntityRepository;
use Sylius\Component\Grid\Data\DataSourceInterface;
use Sylius\Component\Grid\Filtering\FilterInterface;

class TaxonsFilter implements FilterInterface {

    public function apply(DataSourceInterface $dataSource, $name, $data, array $options) {
        $dataSource->restrict($dataSource->getExpressionBuilder()->in('t.id', array_values($data['id'])));
    }

}