Add registerAliasForArgument for Indexes and Finders (#1934)

Author: chrishemmings

doc/usage.md

@@ -291,3 +291,27 @@ with version 7.7 and above. Rewriting your code as follows is a possible workaro
 $boolQuery->addShould($fieldQuery);
 $boolQuery->addShould($tagsQuery);
 ```
+
+Autowiring
+-----------
+
+Indexes and Finders are setup to be used with named Autowiring.  For example, if 
+we have an index defined as `blog.post`, we can autowire a controller like:
+
+```php
+namespace App\Controller;
+
+use FOS\ElasticaBundle\Elastica\Index;
+use FOS\ElasticaBundle\Finder\TransformedFinder;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Routing\Annotation\Route;
+
+#[Route('/default', name: 'app_default')]
+public function index(
+    Index $blogPostIndex,
+    TransformedFinder $blogPostFinder
+): Response {
+    $results = $blogPostFinder->findPaginated('search text');
+    $resultsPage = $results->getCurrentPageResults();
+}
+```

src/DependencyInjection/FOSElasticaExtension.php

@@ -13,6 +13,8 @@
 
 use Elastica\Client as ElasticaClient;
 use FOS\ElasticaBundle\Elastica\Client;
+use FOS\ElasticaBundle\Elastica\Index;
+use FOS\ElasticaBundle\Finder\TransformedFinder;
 use FOS\ElasticaBundle\Manager\RepositoryManagerInterface;
 use Symfony\Component\Config\FileLocator;
 use Symfony\Component\DependencyInjection\ChildDefinition;
@@ -207,6 +209,12 @@ private function loadIndexes(array $indexes, ContainerBuilder $container): void
                 'name' => $name,
             ]);
 
+            $container->registerAliasForArgument(
+                $indexId,
+                Index::class,
+                \sprintf('%s.%s', $name, 'index')
+            )->setPublic(true);
+
             if (isset($index['client'])) {
                 $client = $this->getClient($index['client']);
 
@@ -652,6 +660,12 @@ private function loadTypeFinder(array $typeConfig, ContainerBuilder $container,
             $finderDef->replaceArgument(0, $indexRef);
             $finderDef->replaceArgument(1, new Reference($elasticaToModelId));
             $container->setDefinition($finderId, $finderDef);
+
+            $container->registerAliasForArgument(
+                $finderId,
+                TransformedFinder::class,
+                \sprintf('%s.%s', $indexName, 'finder')
+            )->setPublic(true);
         }
 
         $arguments = [$indexName, new Reference($finderId)];