Display big category tree on route /category/ without parameter

src/Controller/CategoryController.php

@@ -8,8 +8,8 @@ use Symfony\Component\Routing\Attribute\Route;
 
 final class CategoryController extends BaseController
 {
-    #[Route('/category/{category}', name: 'app_category')]
-    public function __invoke(string $category): Response
+    #[Route('/category/{category?}',  name: 'app_category', defaults: ["category" => null])]
+    public function __invoke(?string $category): Response
     {
         if($this->cache->getItem('list_category_'.$category)->isHit()) {
             return $this->render('productList.html.twig', ['listType' => 'category_'.$category]);
@@ -19,8 +19,8 @@ final class CategoryController extends BaseController
         $products = Product::with(['price', 'lowestPrice'])
             ->selectRaw('products.*')
             ->distinct('products.id')
+            ->when(!is_null($category) , fn ($q) => $q->whereRaw('json_each.value = ?', [$category]))
             ->fromRaw('products, json_each(products.categories)')
-            ->whereRaw('json_each.value = ?', [$category])
             ->orderByDesc('starred')
             ->orderByDesc('created_by')
             ->get();