diff --git a/src/Controller/PasteController.php b/src/Controller/PasteController.php
index 368ea79..5b37231 100644
--- a/src/Controller/PasteController.php
+++ b/src/Controller/PasteController.php
@@ -24,23 +24,9 @@ class PasteController extends AbstractController
         $form->handleRequest($request); 
         if ($form->isSubmitted() && $form->isValid()) {
             $pasteData = $form->getData();
+            $pasteData->ip = $request->getClientIp();
 
-            $secret = null;
-            if ($pasteData->private) {
-                $secret = hash('sha1', random_bytes(25)); 
-            }
-
-            $paste = new Paste(
-                $pasteData->text,
-                $pasteData->language,
-                $pasteData->description,
-                $pasteData->filename,
-                $pasteData->author,
-                new \DateTimeImmutable(),
-                $pasteData->expirationDate,
-                $request->getClientIp(),
-                $secret
-            );
+            $paste = Paste::fromFormData($pasteData);
             $pasteRepository->save($paste); 
             
             return $this->redirectToRoute($request->attributes->get('_route')); 
diff --git a/src/DTO/PasteFormData.php b/src/DTO/PasteFormData.php
index 2ccc362..52e0a99 100644
--- a/src/DTO/PasteFormData.php
+++ b/src/DTO/PasteFormData.php
@@ -20,6 +20,7 @@ class PasteFormData
     public string $author = 'anonymous'; 
     #[Assert\Type(\DateTimeImmutable::class)]
     public ?\DateTimeImmutable $expirationDate; 
+    public string $ip; 
 
     public function __construct(?Paste $paste=null) 
     {
diff --git a/src/Entity/Paste.php b/src/Entity/Paste.php
index 54c36dc..2e3d3e6 100644
--- a/src/Entity/Paste.php
+++ b/src/Entity/Paste.php
@@ -2,7 +2,7 @@
 declare(strict_types = 1); 
 
 namespace App\Entity; 
-
+use App\DTO\PasteFormData; 
 use App\Repository\PasteRepository; 
 use Doctrine\DBAL\Types\Types; 
 use Doctrine\ORM\Mapping as ORM; 
@@ -15,7 +15,7 @@ class Paste
     #[ORM\Column]
     public readonly int $id;
 
-    public function __construct(
+    private function __construct(
         #[ORM\Column(type: 'text', nullable: false)]
         public readonly string $text,
         #[ORM\Column(length: 25, nullable: true)]
@@ -35,4 +35,19 @@ class Paste
         #[ORM\Column(length: 40, nullable: true)]
         public readonly ?string $secret,
         ) {}
-}
\ No newline at end of file
+
+    public static function fromFormData(PasteFormData $pasteFormData): Paste
+    {
+        return new self(
+            $pasteFormData->text,
+            $pasteFormData->language,
+            $pasteFormData->description,
+            $pasteFormData->filename,
+            $pasteFormData->author,
+            new \DateTimeImmutable(),
+            $pasteFormData->expirationDate,
+            $pasteFormData->ip,
+            $pasteFormData->private ? \hash('sha1', \random_bytes(25)) : null,
+        );
+    }
+}