minor #13408 using slugger for file uploading, instead of long transliterator code (weaverryan)

This PR was merged into the 5.0 branch.

Discussion
----------

using slugger for file uploading, instead of long transliterator code

String is new in 5.0 and a dependency of FrameworkBundle. And so, a `SluggerInterface` service is always available. We can use it :)

Thanks!

Commits
-------

b25a9a4 using slugger for file uploading, instead of long transliterator code

Author: javiereguiluz

controller/upload_file.rst

@@ -129,13 +129,14 @@ Finally, you need to update the code of the controller that handles the form::
     use Symfony\Component\HttpFoundation\File\UploadedFile;
     use Symfony\Component\HttpFoundation\Request;
     use Symfony\Component\Routing\Annotation\Route;
+    use Symfony\Component\String\Slugger\SluggerInterface;
 
     class ProductController extends AbstractController
     {
         /**
          * @Route("/product/new", name="app_product_new")
          */
-        public function new(Request $request)
+        public function new(Request $request, SluggerInterface $slugger)
         {
             $product = new Product();
             $form = $this->createForm(ProductType::class, $product);
@@ -150,7 +151,7 @@ Finally, you need to update the code of the controller that handles the form::
                 if ($brochureFile) {
                     $originalFilename = pathinfo($brochureFile->getClientOriginalName(), PATHINFO_FILENAME);
                     // this is needed to safely include the file name as part of the URL
-                    $safeFilename = transliterator_transliterate('Any-Latin; Latin-ASCII; [^A-Za-z0-9_] remove; Lower()', $originalFilename);
+                    $safeFilename = $slugger->slug($originalFilename);
                     $newFilename = $safeFilename.'-'.uniqid().'.'.$brochureFile->guessExtension();
 
                     // Move the file to the directory where brochures are stored
@@ -238,20 +239,23 @@ logic to a separate service::
 
     use Symfony\Component\HttpFoundation\File\Exception\FileException;
     use Symfony\Component\HttpFoundation\File\UploadedFile;
+    use Symfony\Component\String\Slugger\SluggerInterface;
 
     class FileUploader
     {
         private $targetDirectory;
+        private $slugger;
 
-        public function __construct($targetDirectory)
+        public function __construct($targetDirectory, SluggerInterface $slugger)
         {
             $this->targetDirectory = $targetDirectory;
+            $this->slugger = $slugger;
         }
 
         public function upload(UploadedFile $file)
         {
             $originalFilename = pathinfo($file->getClientOriginalName(), PATHINFO_FILENAME);
-            $safeFilename = transliterator_transliterate('Any-Latin; Latin-ASCII; [^A-Za-z0-9_] remove; Lower()', $originalFilename);
+            $safeFilename = $slugger->slug($originalFilename);
             $fileName = $safeFilename.'-'.uniqid().'.'.$file->guessExtension();
 
             try {