### Install FormFilterBundle via Composer

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/installation.md

Use this command to add the bundle to your project dependencies.

```bash
composer require spiriitlabs/form-filter-bundle
```

--------------------------------

### Implementing the CRUD List Component

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/advanced-usage-with-pagerfanta-bundle.md

Usage example of the crud-list component, overriding blocks to define specific filter fields and table columns.

```html
{% block body %}
    {% component 'crud-list' with {
        pager: pager,
        form: form,
        } %}

        {% block formFilterRows %}
            <div class="col-lg-3">
                {{ form_widget(form.name) }}
            </div>
            <div class="col-lg-3">
                {{ form_widget(form.email) }}
            </div>
        {% endblock %}
    
        {% block tableTh %}
            <th>name</th>
            <th>email</th>
        {% endblock %}
    
        {% block tableTd %}
            {# @var object \My\Folder\Object #}
    
            <td>{{ object.name }}</td>
            <td>{{ object.email }}</td>
        {% endblock %}
    
        {% block tableEdit %}
            <td>
                <a class="icon-edit" href="{{ path('object_edit', {id: object.id}) }}">
                    edit
                </a>
            </td>
        {% endblock %}
    {% endcomponent %}
{% endblock %}
```

--------------------------------

### Configure FilterType for GET requests

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Set form options to ensure proper validation and method handling for filter forms.

```php
public function configureOptions(OptionsResolver $resolver)
{
    $resolver->setDefaults([
        'error_bubbling'    => true,
        'csrf_protection'   => false,
        'validation_groups' => ['filtering'], // avoid NotBlank() constraint-related message
        'method'            => 'get',
    ]);
}
```

--------------------------------

### Filter Type Event Registration

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/basics.md

Example of adding a filter field within a form builder to trigger event-based condition application.

```php
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

public function buildForm(FormBuilder $builder, array $options)
{
    $builder->add('name', Filters\TextFilterType::class);
}
```

--------------------------------

### Integrate KNP Paginator with FilterBuilder

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-other-bundles.md

Demonstrates how to apply filter conditions to a query builder before passing it to the KNP Paginator service.

```php
<?php
// DefaultController.php
namespace Project\Bundle\SuperBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use Project\Bundle\SuperBundle\Filter\ItemFilterType;

class DefaultController extends Controller
{
    public function __construct(private FilterBuilderUpdaterInterface $filterBuilderUpdater)
    {
    }
        
    public function testFilterAction(Request $request)
    {
        // initialize a query builder
        $filterBuilder = $this->myRepository
            ->createQueryBuilder('e');
    
        $form = $this->formFactory->create(new ItemFilterType());

        if ($request->query->has($form->getName())) {
            // manually bind values from the request
            $form->submit($request->query->get($form->getName()));

            // build the query from the given form object
            $this->filterBuilderUpdater->addFilterConditions($form, $filterBuilder);
        }

        $query = $filterBuilder->getQuery();

        $paginator  = $this->get('knp_paginator');
        $pagination = $paginator->paginate(
            $query,
            $request->query->get('page', 1)/*page number*/,
            10/*limit per page*/
        );

        return $this->render('ProjectSuperBundle:Default:testFilter.html.twig', array(
            'form' => $form->createView(),
            'pagination' => $pagination
        ));
    }
}
```

--------------------------------

### Update Namespace

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/UPGRADE-9.0.md

Replace the old Lexik namespace with the new Spiriit namespace throughout the codebase.

```php
Lexik\Bundle\FormFilterBundle
```

```php
Spiriit\Bundle\FormFilterBundle
```

--------------------------------

### Configure bundle listeners

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/configuration.md

Enable or disable specific query builder listeners in the bundle configuration.

```yaml
# config/packages/spiriit_form_filter.yaml
spiriit_form_filter:
    listeners:
        doctrine_orm: true
```

--------------------------------

### Create Helper Class for Pagination

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/advanced-usage-with-pagerfanta-bundle.md

Define a helper class to manage QueryBuilder operations, filtering, and Pagerfanta instantiation.

```php
    // your helper class 
    public function getAllQb(): QueryBuilder
    {
        return $this->createQueryBuilder($this->getAlias());
    }
    
    public function paginateWithFilters(
        ListOptions $options,
        FormInterface $form = null,
        QueryBuilder $qb = null,
    ): Pagerfanta {
        try {
            $sorting = $options->get('sorting');

            if (!\is_array($sorting)) {
                throw new \RuntimeException('need array');
            }
        } catch (\RuntimeException $e) {
            $sorting = [];
        }

        if (null === $form) {
            $queryBuilder = $qb ?? $this->getCollectionQueryBuilder();

            if (!empty($sorting)) {
                $this->applySorting($queryBuilder, $sorting);
            }

            return $this->paginate($options, $queryBuilder);
        }

        return $this->paginate(
            $options,
            $this->getFilteredResource($form, $sorting, $qb),
        );
    }
    
    public function getPager(QueryBuilder $qb, int $page = 1, int $maxPerPage = 10): Pagerfanta
    {
        $pager = new Pagerfanta(new QueryAdapter($qb));
        $pager->setMaxPerPage($maxPerPage);
        $pager->setCurrentPage($page);

        return $pager;
    }

    public function paginate(ListOptions $options, QueryBuilder $queryBuilder = null): Pagerfanta
    {
        if (null === $queryBuilder) {
            $queryBuilder = $this->getAllQb();
        }

        try {
            $page = $options->get('page');
            $limit = $options->get('limit');

            if (!\is_int($page) || !\is_int($limit)) {
                throw new \RuntimeException('int parameter');
            }
        } catch (\RuntimeException $e) {
            $page = 1;
            $limit = 10;
        }

        return $this->getPager(
            $queryBuilder,
            $page,
            $limit,
        );
    }

    public function getFilteredResource(
        FormInterface $form,
        ?array $sorting = [],
        QueryBuilder $qb = null,
    ): QueryBuilder {
        $queryBuilder = $qb ?? $this->getCollectionQueryBuilder();

        $this->applyFilters($form, $queryBuilder);

        if (!empty($sorting)) {
            $this->applySorting($queryBuilder, $sorting);
        }

        return $queryBuilder;
    }

    protected function getPropertyName(string $name): string
    {
        if (!str_contains($name, '.')) {
            return $this->getAlias().'.'.$name;
        }

        return $name;
    }

    protected function applySorting(QueryBuilder $queryBuilder, array $sorting = []): void
    {
        foreach ($sorting as $property => $order) {
            if (!empty($order)) {
                $queryBuilder->addOrderBy($this->getPropertyName($property), $order);
            }
        }
    }

    protected function getAlias(): string
    {
        return 'o';
    }

    protected function applyFilters(FormInterface $form, QueryBuilder $queryBuilder): void
    {
        if (null === $form->getData()) {
            return;
        }
        
        $this->filterBuilderUpdater->addFilterConditions($form, $queryBuilder);
    }
```

--------------------------------

### Update bundles.php Configuration

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/UPGRADE-9.0.md

Update the bundle registration in bundles.php to reflect the new namespace and class name.

```php
use Lexik\Bundle\FormFilterBundle\LexikFormFilterBundle;

...

LexikFormFilterBundle::class => ['all' => true],
```

```php
use Spiriit\Bundle\FormFilterBundle\SpiriitFormFilterBundle;

...

SpiriitFormFilterBundle::class => ['all' => true],
```

--------------------------------

### Alternative event subscription for standard types

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Listen to standard locale events when using the default data extraction method.

```php
[...]
class FilterSubscriber implements EventSubscriberInterface
{
    /**
     * {@inheritDoc}
     */
    public static function getSubscribedEvents()
    {
        return [
            'spiriit_form_filter.apply.orm.locale' => ['filterLocale'],
            'spiriit_form_filter.apply.dbal.locale' => ['filterLocale'],
        ];
    }
    [...]
}
```

--------------------------------

### Implementing a Custom Data Extraction Method

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/filtertypeextension.md

Define a custom extraction method by implementing DataExtractionMethodInterface and registering it as a service with the appropriate tag.

```php
<?php

namespace Super\Namespace;

use Symfony\Component\Form\FormInterface;
use Spiriit\Bundle\FormFilterBundle\Filter\DataExtractor\Method\DataExtractionMethodInterface;

class RainbowExtractionMethod implements DataExtractionMethodInterface
{
    public function getName()
    {
        return 'rainbow';
    }

    public function extract(FormInterface $form)
    {
        $values = [
            'value' => $form->getData(), // The value used to filter, most time the form value.
        ];

        // add other stuff into $values

        return $values;
    }
}
```

```xml
<service id="my_project.data_extraction_method.rainbow" class="Super\Namespace\RainbowExtractionMethod">
    <tag name="spiriit_form_filter.data_extraction_method" />
</service>
```

```php
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

public function buildForm(FormBuilderInterface $builder, array $options)
{
    $builder->add('my_text_field', Filters\TextFilterType::class, array(
        'data_extraction_method' => 'rainbow',
    ));
}
```

--------------------------------

### Implement a FilterSubscriber

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Create an event subscriber to handle filter conditions for both ORM and DBAL query builders.

```php
namespace Super\Namespace\Listener;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Spiriit\Bundle\FormFilterBundle\Event\GetFilterConditionEvent;

class FilterSubscriber implements EventSubscriberInterface
{
    /**
     * {@inheritDoc}
     */
    public static function getSubscribedEvents(): array
    {
        return [
            // if a Doctrine\ORM\QueryBuilder is passed to the spiriit_form_filter.query_builder_updater service
	    // "locale_filter" is the block prefix of the LocaleFilterType
            'spiriit_form_filter.apply.orm.locale_filter' => ['filterLocale'],

            // if a Doctrine\DBAL\Query\QueryBuilder is passed to the spiriit_form_filter.query_builder_updater service
            // "locale_filter" is the block prefix of the LocaleFilterType
            'spiriit_form_filter.apply.dbal.locale_filter' => ['filterLocale'],
        ];
    }

    /**
     * Apply a filter for a LocaleFilterType type.
     *
     * This method should work with both ORM and DBAL query builder.
     */
    public function filterLocale(GetFilterConditionEvent $event): void
    {
        $expr   = $event->getFilterQuery()->getExpr();
        $values = $event->getValues();

        if ('' !== $values['value'] && null !== $values['value']) {
            $paramName = str_replace('.', '_', $event->getField());

            $event->setCondition(
                $expr->eq($event->getField(), ':'.$paramName),
                [$paramName => $values['value']]
            );
        }
    }
}
```

--------------------------------

### Update Bundle Configuration Key

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/UPGRADE-9.0.md

Update the configuration file key from lexik_form_filter to spiriit_form_filter.

```yaml
lexik_form_filter
```

```yaml
spiriit_form_filter
```

--------------------------------

### Implement Pagerfanta in Controller

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/advanced-usage-with-pagerfanta-bundle.md

Use the helper class to paginate filtered results within a Symfony controller.

```php
// your controller

    public function __invoke(Request $request): Response
    {
        $form = $this->createForm(FilterType::class, null, [
            'method' => Request::METHOD_GET,
        ]);
        $form->handleRequest($request);

        $pager = $this->helperClass->paginateWithFilters(
            new ListOptions([
                'page' => $request->query->get('page', '1'),
                'limit' => $request->query->get('per_page', '20'),
                'sorting' => ['date' => 'ASC'],
            ]),
            $form,
            $this->getQueryBuilder(),
        );

        return $this->render('demo/test.html.twig', [
            'pager' => $pager,
            'form' => $form,
        ]);
    }
```

--------------------------------

### Configure case insensitivity

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/configuration.md

Adjust case sensitivity settings for LIKE comparisons, particularly for Postgres databases.

```yaml
# config/packages/spiriit_form_filter.yaml
spiriit_form_filter:
    force_case_insensitivity: false
    encoding: ~ # Encoding for case insensitive LIKE comparisons. For example: UTF-8
```

--------------------------------

### Configure global text filter pattern

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/configuration.md

Set the default text pattern used by the TextFilterType globally.

```yaml
# config/packages/spiriit_form_filter.yaml
spiriit_form_filter:
    condition_pattern: text.starts
```

--------------------------------

### Configure Twig form themes

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/configuration.md

Register the bundle's template blocks in your Twig configuration.

```yaml
# config/packages/twig.yaml
twig:
    form_themes:
        - '@SpiriitFormFilter/Form/form_div_layout.html.twig'
```

--------------------------------

### Integrate PagerFanta with FilterBuilder

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-other-bundles.md

Shows the implementation of filtering logic within a controller using PagerFanta for pagination.

```php
<?php
// DefaultController.php
namespace Project\Bundle\SuperBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Project\Bundle\SuperBundle\Filter\ItemFilterType;
use Pagerfanta\Doctrine\ORM\QueryAdapter;
use Pagerfanta\Pagerfanta;

class DefaultController extends AbstractController
{
    public function __construct(
        private FilterBuilderUpdaterInterface $filterBuilderUpdater,
        private FormFactoryInterface $formFactory
    )
    {
    }
    
    public function __invoke(Request $request)
    {
        $form = $this->formFactory->create(new ItemFilterType());

        if ($request->query->has($form->getName())) {
            // manually bind values from the request
            $form->submit($request->query->get($form->getName()));

            // build the query from the given form object
            $this->filterBuilderUpdater->addFilterConditions($form, $filterBuilder);
        }

        $query = $filterBuilder->getQuery();

        $pager = $this->paginateWithFilters(
            new ListOptions([
                'page' => $request->query->get('page', '1'),
                'limit' => $request->query->get('per_page', '100'),
                'sorting' => $request->query->get('sorting') ?? [
                    'status' => 'ASC',
                ],
            ]),
            $form,
            $this->myRepository->getAllQueryBuilder(),
        );

        return $this->render('ProjectSuperBundle:Default:testFilter.html.twig', array(
            'form' => $form->createView(),
            'pager' => $pager
        ));
    }
}
```

--------------------------------

### Define a Doctrine Entity

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/basics.md

Create a standard Doctrine ORM entity to be used with the filter bundle.

```php
<?php
// MyEntity.php
namespace Project\
Bundle\SuperBundle\Entity;

use Doctrine\ORM\Mapping as ORM;
use Symfony\Component\Validator\Constraints as Assert;

/**
 * @ORM\Entity
 */
class MyEntity
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    /**
     * @ORM\Column(type="string")
     */
    protected $name;

    /**
     * @ORM\Column(type="integer")
     */
    protected $rank;
}
```

--------------------------------

### Configure query builder method

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/configuration.md

Define the default method used on the Doctrine query builder to apply filter conditions.

```yaml
# config/packages/spiriit_form_filter.yaml
spiriit_form_filter:
    where_method: ~  # null | and | or
```

--------------------------------

### Implement OptionsFilterType with joins

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Use the custom filter type within a parent form and define the necessary joins using the add_shared closure.

```php
namespace Project\Bundle\SuperBundle\Filter;

use Doctrine\ORM\Query\Expr;
use Doctrine\ORM\QueryBuilder;

use Spiriit\Bundle\FormFilterBundle\Filter\FilterBuilderExecuterInterface;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

class OptionsFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('item', ItemFilterType::class, array(
            'add_shared' => function (FilterBuilderExecuterInterface $qbe) {
                $closure = function (QueryBuilder $filterBuilder, $alias, $joinAlias, Expr $expr) {
                    $filterBuilder->leftJoin($alias . '.item', $joinAlias);
                };

                $qbe->addOnce($qbe->getAlias().'.item', 'i', $closure);
            }
        ));
    }
}
```

--------------------------------

### Customizing Filter Application with apply_filter

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/filtertypeextension.md

Use the apply_filter option to override default filtering logic using a callback or Closure.

```php
<?php

use Spiriitundleormfilterbundleilter\query\QueryInterface;
use Spiriitundleormfilterbundleilter\form\type as Filters;
use Symfonyundlerameworkbundleorm\AbstractType;
use Symfonyundlerameworkbundleorm\FormBuilderInterface;

class CallbackFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('my_text_field', Filters\TextFilterType::class, [
            'apply_filter' => [$this, 'textFieldCallback'],
        ]);
    
        $builder->add('my_number_field', Filters\NumberFilterType::class, [
            'apply_filter' => function(QueryInterface $filterQuery, $field, $values) {
                if (empty($values['value'])) {
                    return null;
                }
    
                $expr = $filterQuery->getExpr();
    
                $paramName = sprintf('p_%s', str_replace('.', '_', $field));
    
                return $filterQuery->createCondition(
                    $expr->eq($field, ':' . $paramName),    // expression
                    [$paramName => $values['value']] // parameters [ name => value ]
                );
            },
        ]);
    }


    public function getBlockPrefix()
    {
        return 'item_filter';
    }

    public function textFieldCallback(QueryInterface $filterQuery, $field, $values)
    {
        if (empty($values['value'])) {
            return null;
        }

        $expr = $filterQuery->getExpr();

        $paramName = sprintf('p_%s', str_replace('.', '_', $field));

        return $filterQuery->createCondition(
            $expr->eq($field, ':'.$paramName),    // expression
            [$paramName => [$values['value'], \PDO::PARAM_STR]] // parameters [ name => [value, type] ]
        );
    }
}
```

--------------------------------

### Configure filter condition builder

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Implementation of the filter_condition_builder option to define complex logical relationships between filter fields.

```php
<?php

namespace Project
Bundle
SuperBundle
Filter;

use Symfony
Component
Form
AbstractType;
use Symfony
Component
Form
FormBuilder;
use Symfony
Component
OptionsResolver
ConditionBuilderInterface;
use Spiriit
Bundle
FormFilterBundle
Filter
Form
Type as Filters;

use Spiriit
Bundle
FormFilterBundle
Filter
Condition
ConditionBuilderInterface;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder->add('name', Filters
TextFilterType::class);
        $builder->add('date', Filters
NumberFilterType::class);
        $builder->add('options', new RelatedOptionsType());
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'filter_condition_builder' => function (ConditionBuilderInterface $builder) {
                $builder
                    ->root('or')
                        ->field('options.label')
                        ->andX()
                            ->field('options.rank')
                            ->field('name')
                        ->end()
                        ->field('date')
                    ->end()
                ;
            }
        ));
    }
}
```

```php
$resolver->setDefaults(array(
    'filter_condition_builder' => function (ConditionBuilderInterface $builder) {
        $builder
            ->root('and')
                ->orX()
                    ->field('options.label')
                    ->field('name')
                ->end()
                ->orX()
                    ->field('options.rank')
                    ->field('date')
                ->end()
            ->end()
        ;
    }
));
```

--------------------------------

### Implement Filtering in Controller

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/basics.md

Bind the filter form to the request and use FilterBuilderUpdater to apply conditions to the QueryBuilder.

```php
<?php
// DefaultController.php
namespace Project\Bundle\SuperBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Form\FormFactoryInterface;
use Project\Bundle\SuperBundle\Filter\ItemFilterType;
use Project\Bundle\SuperBundle\Entity\MyEntity;
use Spiriit\Bundle\FormFilterBundle\Filter\FilterBuilderUpdater;

class DefaultController extends AbstractController
{
    public function __invoke(
    Request $request, 
    FormFactoryInterface $formFactory,
    EntityManagerInterface $em,
    FilterBuilderUpdater $filterBuilderUpdater
    ): Response
    {
        $form = $formFactory->create(ItemFilterType::class);

        // manually bind values from the request
        $form->submit($request->query->get($form->getName()));

        // initialize a query builder
        $filterBuilder = $em
            ->getRepository(MyEntity::class)
            ->createQueryBuilder('e');

        // build the query from the given form object
        $filterBuilderUpdater->addFilterConditions($form, $filterBuilder);

        // now look at the DQL =)
        dump($filterBuilder->getDql());

        return $this->render('testFilter.html.twig', [
            'form' => $form,
        ]);
    }
}
```

--------------------------------

### Create a custom LocaleFilterType

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Define a custom filter type by extending AbstractType and setting the parent to LocaleType.

```php
namespace Super\Namespace\Type;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Symfony\Component\Form\Extension\Core\Type\LocaleType;

class LocaleFilterType extends AbstractType
{
    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver
            ->setDefaults([
                'data_extraction_method' => 'default',
            ])
            ->setAllowedValues('data_extraction_method', ['default'])
        ;
    }

    public function getParent()
    {
        return LocaleType::class;
    }
}
```

--------------------------------

### Use existing join aliases with QueryBuilderUpdater

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Pre-define join aliases using setParts to reuse existing joins on the QueryBuilder before applying filter conditions.

```php
$form = /* your form filter instance */;

$queryBuilder = $em
    ->getRepository(MyEntity::class)
    ->createQueryBuilder('e');

$queryBuilder
    ->select('e, u, a')
    ->leftJoin('e.user', 'u')
    ->innerJoin('u.addresses', 'a');

$queryBuilderUpdater = // inject FilterBuilderUpdater::class

// set the joins
$qbUpdater->setParts(array(
    '__root__'    => 'e',
    'e.user'      => 'u',
    'u.addresses' => 'a',
));

// then add filter conditions
$queryBuilderUpdater->addFilterConditions($form, $queryBuilder);
```

--------------------------------

### Create a Filter Type

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/basics.md

Extend AbstractType to define filter fields using the bundle's provided filter types.

```php
<?php
// ItemFilterType.php
namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Symfony\Component\OptionsResolver\OptionsResolver;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('name', Filters\TextFilterType::class);
        $builder->add('rank', Filters\NumberFilterType::class);
    }

    public function getBlockPrefix()
    {
        return 'item_filter';
    }

    public function configureOptions(OptionsResolver $resolver)
    {
        $resolver->setDefaults(array(
            'csrf_protection'   => false,
            'validation_groups' => array('filtering') // avoid NotBlank() constraint-related message
        ));
    }
}
```

--------------------------------

### Base Template Structure for Pagerfanta List

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/advanced-usage-with-pagerfanta-bundle.md

Defines the layout for a list view including a filter form, data table, and pagination controls.

```html
{% trans_default_domain 'admin' %}

{% block preList '' %}

{% if form is not none %}
    <div class="card mb-3">
        <div class="card-body">
            {{ form_start(form, {attr: {class: 'form-inline'}}) }}
            <div class="row">
                {% block formFilterRows '' %}
            </div>
            {{ form_end(form) }}
        </div>
    </div>
{% endif %}

<div class="card">
    <div class="card-body">
        <div class="table-responsive-lg">
            {{ pager.count }} results
            <table class="table table-centered table-striped">
                <thead>
                <tr>
                    {% block tableTh '' %}
                    {% block tableAction %}
                        <th>actions</th>
                    {% endblock %}
                </tr>
                </thead>

                <tbody>
                {% for object in pager.currentPageResults %}
                    <tr>
                        {% block tableTd '' %}

                        {% block tableEdit %}
                            <td></td>
                        {% endblock %}
                    </tr>
                {% endfor %}
                </tbody>
            </table>
            {% block pagination %}
                <div class="pagerfanta mt-4 pagination justify-content-end">
                    {{ pagerfanta(pager) }} {# extension from bundle pagerfanta #}
                </div>
            {% endblock %}
        </div>
    </div>
</div>
```

--------------------------------

### Defining a custom filter event listener

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Implement custom filter logic by listening to specific events generated based on the form type and field name.

```php
<?php
// ItemFilterType.php
namespace Project\\Bundle\\SuperBundle\\Filter;

use Symfony\\Component\\Form\\AbstractType;
use Symfony\\Component\\Form\\FormBuilder;
use Spiriit\\Bundle\\FormFilterBundle\\Filter\\Form\\Type as Filters;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder->add('position', Filters\\NumberFilterType::class);
    }
}
```

```php
namespace MyBundle\\EventListener;

use Spiriit\\Bundle\\FormFilterBundle\\Event\\GetFilterConditionEvent;

class ItemPositionFilterConditionListener
{
    public function onGetFilterCondition(GetFilterConditionEvent $event)
    {
        $expr   = $event->getFilterQuery()->getExpr();
        $values = $event->getValues();

        if (!empty($values['value'])) {
            // create a parameter name from the field
            $paramName = sprintf('p_%s', str_replace('.', '_', $field));

            // Set the condition on the given event
            $event->setCondition(
                $expr->eq($event->getField(), ':' . $paramName),
                array($paramName => $values['value'])
            );
        }
    }
}
```

```xml
<service id="my_bundle.listener.get_item_position_filter" class="MyBundle\EventListener\ItemPositionFilterConditionListener">
    <tag name="kernel.event_listener" event="spiriit_form_filter.apply.orm.item_filter.position" method="onGetFilterCondition" />
</service>
```

--------------------------------

### Define Twig Component for List

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/advanced-usage-with-pagerfanta-bundle.md

Use a Twig component to handle the form view and pager data for list rendering.

```php
#[AsTwigComponent(name: 'crud-list', template: 'components/crud/list.html.twig')]
class ListComponent
{
    public ?FormView $form = null;
    public ?Pagerfanta $pager = null;

    /**
     * @param mixed[] $data
     *
     * @return mixed[]
     */
    #[PreMount]
    public function preMount(array $data): array
    {
        $resolver = new OptionsResolver();
        $resolver->setDefault('form', null);
        $resolver->setRequired('pager');
        $resolver->setAllowedTypes('form', ['null', FormView::class]);
        $resolver->setAllowedTypes('pager', Pagerfanta::class);

        return $resolver->resolve($data);
    }
}
```

--------------------------------

### Apply Filters in Controller

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/README.md

Handle the filter form request and update the Doctrine QueryBuilder with filter conditions.

```php
class DefaultController extends AbstractController
{
    public function __invoke(
    Request $request, 
    FormFactoryInterface $formFactory,
    EntityManagerInterface $em,
    FilterBuilderUpdater $filterBuilderUpdater
    ): Response
    {
        $form = $formFactory->create(RankFilterType::class);

        $form->handleRequest($request);

        $filterBuilder = $em
            ->getRepository(MyEntity::class)
            ->createQueryBuilder('e');

        $filterBuilderUpdater->addFilterConditions($form, $filterBuilder);

        // now look at the DQL =)
        dump($filterBuilder->getDql());

        return $this->render('testFilter.html.twig', [
            'form' => $form,
        ]);
    }
}
```

--------------------------------

### Create a Filter Form Type

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/README.md

Define a form class using the provided filter types to specify filtering criteria.

```php
<?php
namespace Project
Form
Filter;

use Symfony
Component
Form
AbstractType;
use Symfony
Component
Form
FormBuilderInterface;
use Symfony
Component
OptionsResolver
OptionsResolver;
use Spiriit
Bundle
FormFilterBundle
Filter
Form
Type as Filters;

class RankFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('name', Filters
TextFilterType::class);
        $builder->add('rank', Filters
NumberFilterType::class);
    }
}
```

--------------------------------

### Render Filter Form in Template

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/basics.md

Use the form object in a Twig template to display the filter inputs.

```html
<!-- testFilter.html.twig -->
<form method="get" action=".">
    {{ form_rest(form) }}
    <input type="submit" name="submit-filter" value="filter" />
</form>
```

--------------------------------

### Register the FilterSubscriber as a service

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Define the subscriber in your service configuration with the kernel.event_subscriber tag.

```xml
<service id="spiriit_form_filter.doctrine_subscriber" class="Super\Namespace\Listener\FilterSubscriber">
    <tag name="kernel.event_subscriber" />
</service>
```

--------------------------------

### Use CollectionAdapterFilterType with Doctrine

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Embed a filter type using CollectionAdapterFilterType and define necessary joins via the add_shared option.

```php
<?php

namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
use Doctrine\ORM\Query\Expr;
use Doctrine\ORM\QueryBuilder;
use Spiriit\Bundle\FormFilterBundle\Filter\FilterBuilderExecuterInterface;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder->add('name', Filters\TextFilterType::class);
        $builder->add('rank', Filters\NumberFilterType::class);

        $builder->add('options', Filters\CollectionAdapterFilterType::class, [
            'entry_type' => OptionsFilterType::class,
            'add_shared' => function (FilterBuilderExecuterInterface $qbe)  {
                $closure = function (QueryBuilder $filterBuilder, $alias, $joinAlias, Expr $expr) {
                    // add the join clause to the doctrine query builder
                    // the where clause for the label and color fields will be added automatically with the right alias
                    // later by the Spiriit\Filter\QueryBuilderUpdater
                    $filterBuilder->leftJoin($alias . '.options', $joinAlias);
                };

                // then use the query builder executor to define the join and its alias.
                $qbe->addOnce($qbe->getAlias().'.options', 'opt', $closure);
            },
        ]);
    }
}
```

--------------------------------

### Apply filter conditions to a query builder

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Use the query builder updater to add filter conditions to a query builder after validating the filter form.

```php
// Handle the filtering
$filterForm = $this->createForm(new OrderFilterType());

$filterForm->handleRequest($request);

if ($filterForm->isValid()) {
	$filterBuilder = $queryBuilderUpdater->addFilterConditions($filterForm, $filterBuilder);
}
```

--------------------------------

### Disable filtering for a field

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Set the apply_filter option to false to prevent the bundle from adding a condition for a specific field.

```php
<?php
// ItemFilterType.php
namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilder;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder->add('name', Filters\TextFilterType::class, [
            'apply_filter' => false, // disable filter
        ]);
    }
}
```

--------------------------------

### Define a RelatedOptionsType filter

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

A simple filter type definition containing text and number fields to be used as a subtype.

```php
<?php

namespace Project
Bundle
SuperBundle
Filter;

use Symfony
Component
Form
AbstractType;
use Symfony
Component
Form
FormBuilder;
use Spiriit
Bundle
FormFilterBundle
Filter
Form
Type as Filters;

class RelatedOptionsType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder->add('label', Filters
TextFilterType::class);
        $builder->add('rank', Filters
NumberFilterType::class);
    }
}
```

--------------------------------

### Implement EmbeddedFilterTypeInterface for AddressFilterType

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Implement the EmbeddedFilterTypeInterface to allow the FilterBuilderUpdater to correctly handle embedded types.

```php
namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type\EmbeddedFilterTypeInterface;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

class AddressFilterType extends AbstractType implements EmbeddedFilterTypeInterface
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('street', Filters\TextFilterType::class);
        $builder->add('postalCode', Filters\NumberFilterType::class);
        // ...
    }
}
```

--------------------------------

### Create a custom ItemFilterType

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Define a filter type that extends SharedableFilterType to enable the add_shared option for related entity filtering.

```php
namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('name', Filters\TextFilterType::class);
    }

    public function getParent()
    {
        return Filters\SharedableFilterType::class; // this allows us to use the "add_shared" option
    }
}
```

--------------------------------

### Embed filter types in UserFilterType

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Standard form type implementation that embeds another filter type.

```php
namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;

class UserFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        // ...
        $builder->add('address', AddressFilterType::class);
        // ...
    }
}
```

--------------------------------

### Define an embedded filter type

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Create a standard form type to serve as the embedded filter for related entities.

```php
<?php

namespace Project\Bundle\SuperBundle\Filter;

use Symfony\Component\Form\AbstractType;
use Symfony\Component\Form\FormBuilderInterface;
use Spiriit\Bundle\FormFilterBundle\Filter\Form\Type as Filters;

/**
 * Embed filter type.
 */
class OptionsFilterType extends AbstractType
{
    public function buildForm(FormBuilderInterface $builder, array $options)
    {
        $builder->add('label', Filters\TextFilterType::class);
        $builder->add('color', Filters\TextFilterType::class);
    }
}
```

--------------------------------

### Customizing filter logic with apply_filter

Source: https://github.com/spiriitlabs/form-filter-bundle/blob/master/Resources/doc/working-with-the-bundle.md

Use the apply_filter closure to define custom query conditions directly within a form type. This prevents the QueryBuilderUpdater from triggering default events.

```php
<?php
// ItemFilterType.php
namespace Project\\\Bundle\\SuperBundle\\Filter;

use Symfony\\Component\\Form\\AbstractType;
use Symfony\\Component\\Form\\FormBuilder;
use Spiriit\\Bundle\\FormFilterBundle\\Filter\\Query\\QueryInterface;
use Spiriit\\Bundle\\FormFilterBundle\\Filter\\Form\\Type as Filters;

class ItemFilterType extends AbstractType
{
    public function buildForm(FormBuilder $builder, array $options)
    {
        $builder->add('name', Filters\\TextFilterType::class, array(
            'apply_filter' => function (QueryInterface $filterQuery, $field, $values) {
                if (empty($values['value'])) {
                    return null;
                }

                $paramName = sprintf('p_%s', str_replace('.', '_', $field));

                // expression that represents the condition
                $expression = $filterQuery->getExpr()->eq($field, ':'.$paramName);

                // expression parameters
                $parameters = [$paramName => $values['value']]; // [ name => value ]
                // or if you need to define the parameter's type
                // $parameters = [$paramName => [$values['value'], \PDO::PARAM_STR]]; // [ name => [value, type] ]

                return $filterQuery->createCondition($expression, $parameters);
            },
        ));
    }
}
```

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