[Docs] Autocomplete cookbook

docs/SUMMARY.md

@@ -11,6 +11,7 @@
   * [Customizing the menu](cookbook/admin_panel/menu.md)
   * [Configuring the security access](cookbook/admin_panel/security.md)
   * [Customizing the page titles](cookbook/admin_panel/page_titles.md)
+  * [Using autocompletes](cookbook/admin_panel/autocompletes.md)
 * [How to use in a DDD architecture](cookbook/ddd_architecture.md)
   * [Architecture overview](cookbook/ddd_architecture/overview.md)
   * [Resource configuration](cookbook/ddd_architecture/resource_configuration.md)

docs/cookbook/admin_panel.md

@@ -5,3 +5,4 @@
 * [Customizing the menu](admin_panel/menu.md)
 * [Configuring the security access](admin_panel/security.md)
 * [Customizing the page titles](admin_panel/page_titles.md)
+* [Using autocompletes](admin_panel/autocompletes.md)

docs/cookbook/admin_panel/autocompletes.md

@@ -0,0 +1,166 @@
+# Using autocompletes
+
+Sylius stack uses [Symfony UX](https://ux.symfony.com/) under the hood.
+Thus, UX autocomplete is already setup and configured in your admin panel.
+
+## Configure entity autocomplete route for admin section
+
+{% tabs %}
+{% tab title="YAML" %}
+{% code lineNumbers="true" %}
+``̀`yaml
+#config/routes/ux_autocomplete.yaml
+#...
+ux_entity_autocomplete_admin:
+    path: '/admin/autocomplete/{alias}'
+    controller: 'ux.autocomplete.entity_autocomplete_controller'
+``̀`
+{% endcode %}
+{% endtab %}
+
+{% tab title="PHP" %}
+{% code lineNumbers="true" %}
+```php
+<?php
+// config/routes/ux_autocomplete.php
+declare(strict_types=1);
+
+use Symfony\Component\Routing\Loader\Configurator\RoutingConfigurator;
+
+return static function (RoutingConfigurator $routingConfigurator): void {
+    // ...
+    $routingConfigurator
+        ->add('ux_entity_autocomplete_admin', '/admin/autocomplete/{alias}')
+            ->controller('ux.autocomplete.entity_autocomplete_controller')
+    ;
+};
+```
+{% endcode %}
+{% endtab %}
+{% endtabs %}
+
+Now you have a new ajax route `ux_entity_autocomplete_admin` for your autocompletes.
+
+## Add a grid filter with entity autocomplete
+
+First, you need to create the [entity autocomplete field](https://symfony.com/bundles/ux-autocomplete/current/index.html#usage-in-a-form-with-ajax).
+
+```php
+<?php
+
+declare(strict_types=1);
+
+namespace App\Form;
+
+use App\Entity\Speaker;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+use Symfony\UX\Autocomplete\Form\AsEntityAutocompleteField;
+use Symfony\UX\Autocomplete\Form\BaseEntityAutocompleteType;
+
+#[AsEntityAutocompleteField(
+    alias: 'app_admin_speaker',
+    route: 'ux_entity_autocomplete_admin', // We use the route we just configured before.
+)]
+final class SpeakerAutocompleteType extends AbstractType
+{
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults([
+            'class' => Speaker::class,
+            'choice_label' => 'fullName',
+        ]);
+    }
+
+    public function getParent(): string
+    {
+        return BaseEntityAutocompleteType::class;
+    }
+}
+```
+
+Then you need to create the grid filter.
+
+```php
+<?php
+
+declare(strict_types=1);
+
+namespace App\Grid\Filter;
+
+use App\Form\SpeakerAutocompleteType;
+use Sylius\Component\Grid\Data\DataSourceInterface;
+use Sylius\Component\Grid\Filter\EntityFilter;
+use Sylius\Component\Grid\Filtering\ConfigurableFilterInterface;
+
+final class SpeakerFilter implements ConfigurableFilterInterface
+{
+    public function __construct(
+        private readonly EntityFilter $entityFilter,
+    ) {
+    }
+
+    public function apply(DataSourceInterface $dataSource, string $name, mixed $data, array $options): void
+    {
+        $this->entityFilter->apply($dataSource, $name, $data, $options);
+    }
+
+    public static function getFormType(): string
+    {
+        return SpeakerAutocompleteType::class;
+    }
+
+    public static function getType(): string
+    {
+        return self::class; // it will allow to use FQCN instead of a string key.
+    }
+}
+```
+
+We also need to configure the Twig template for our new grid filter.
+
+```yaml
+# config/packages/sylius_grid.yaml
+sylius_grid:
+    # ...
+    templates:
+        filter:
+            'App\Grid\Filter\SpeakerFilter': '@SyliusBootstrapAdminUi/shared/grid/filter/entity.html.twig'
+
+```
+
+Now our new grid filtered is configured, we can use it in a grid.
+
+```php
+<?php
+
+declare(strict_types=1);
+
+namespace App\Grid;
+
+use App\Grid\Filter\SpeakerFilter;
+use Sylius\Bundle\GridBundle\Builder\Filter\Filter;
+use Sylius\Bundle\GridBundle\Builder\GridBuilderInterface;
+use Sylius\Bundle\GridBundle\Grid\AbstractGrid;
+use Sylius\Bundle\GridBundle\Grid\ResourceAwareGridInterface;
+
+final class TalkGrid extends AbstractGrid implements ResourceAwareGridInterface
+{
+    // ...
+
+    public function buildGrid(GridBuilderInterface $gridBuilder): void
+    {
+        $gridBuilder
+            // ...
+            ->addFilter(
+                Filter::create(name: 'speaker', type: SpeakerFilter::class) // We use the new Speaker filter we just created.
+                    ->setLabel('app.ui.speaker')
+                    ->setOptions(['fields' => ['speakers.id']]),
+            )
+            // ...
+        ;
+    }
+
+    // ...
+}
+```