Added book search.

src/Twig/AppExtension.php

@@ -3,16 +3,27 @@
 
 namespace App\Twig;
 
+use App\Form\SearchType;
+use Symfony\Component\Form\FormFactoryInterface;
 use Twig\Extension\AbstractExtension;
 use Twig\TwigFilter;
 use Twig\TwigFunction;
 
 class AppExtension extends AbstractExtension
 {
+
+    private $formFactory;
+
+    public function __construct(FormFactoryInterface $formFactory)
+    {
+        $this->formFactory = $formFactory;
+    }
+
     public function getFunctions()
     {
         return [
             new TwigFunction('file_exists', [$this, 'file_exists']),
+            new TwigFunction('render_search_form', [$this, 'render_search_form']),
         ];
     }
 
@@ -34,4 +45,9 @@ class AppExtension extends AbstractExtension
         $suffix = array("B", "KB", "MB", "GB", "TB")[floor($base)];
         return round(pow(1024, $base - floor($base)), 2) . $suffix;
     }
+
+    public function render_search_form()
+    {
+        return $this->formFactory->create(SearchType::class)->createView();
+    }
 }