added new publicPath method in trait & contract

Author: gandesc

src/App/Contracts/Attachable.php

@@ -24,6 +24,8 @@ public function attach(File $file, string $originalName, ?User $user): void;
 
     public function folder(): string;
 
+    public function publicPath(): ?string;
+
     public function mimeTypes(): array;
 
     public function extensions(): array;

src/App/Traits/HasFile.php

@@ -65,6 +65,13 @@ public function folder(): string
         return $this->folder;
     }
 
+    public function publicPath(): ?string
+    {
+        return $this->file
+            ? "{$this->folder()}/{$this->file->saved_name}"
+            : null;
+    }
+
     public function mimeTypes(): array
     {
         return property_exists($this, 'mimeTypes')