Allow specifying file name for uploaded files

packages/forms/src/Concerns/CanUploadFiles.php

@@ -4,6 +4,7 @@ namespace Filament\Forms\Concerns;
 
 use Filament\Forms\Components\Field;
 use Filament\Forms\Components\FileUpload;
+use Illuminate\Http\UploadedFile;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Str;
 use Illuminate\Validation\ValidationException;
@@ -83,8 +84,7 @@ trait CanUploadFiles
                 continue;
             }
 
-            $storeMethod = $field->getVisibility() === 'public' ? 'storePublicly' : 'store';
-            $path = $temporaryUploadedFile->{$storeMethod}($field->getDirectory(), $field->getDiskName());
+            $path = $this->storeFile($temporaryUploadedFile, $field);
             $this->syncInput($field->getName(), $path, false);
         }
 
@@ -134,4 +134,14 @@ trait CanUploadFiles
             throw $exception;
         }
     }
+
+    /**
+     * Store the given $file for the given $field in storage.
+     */
+    protected function storeFile(UploadedFile $file, FileUpload $field): string
+    {
+        $storeMethod = $field->getVisibility() === 'public' ? 'storePublicly' : 'store';
+
+        return $file->{$storeMethod}($field->getDirectory(), $field->getDiskName());
+    }
 }

src/Resources/Forms/Components/FileUpload.php

@@ -5,4 +5,13 @@ namespace Filament\Resources\Forms\Components;
 class FileUpload extends \Filament\Forms\Components\FileUpload
 {
     use Concerns\InteractsWithResource;
+
+    public $storeAsCallback;
+
+    public function storeAs(callable $storeAsCallback)
+    {
+        $this->storeAsCallback = $storeAsCallback;
+
+        return $this;
+    }
 }

src/Resources/Forms/HasForm.php

@@ -2,6 +2,11 @@
 
 namespace Filament\Resources\Forms;
 
+use Filament\Resources\Forms\Components\FileUpload;
+use Illuminate\Database\Eloquent\Model;
+use Illuminate\Http\UploadedFile;
+use Symfony\Component\HttpFoundation\ParameterBag;
+
 trait HasForm
 {
     use \Filament\Forms\HasForm;
@@ -27,4 +32,25 @@ trait HasForm
     {
         return $form;
     }
+
+    /**
+     * Store the given $file for the given $field in storage.
+     */
+    protected function storeFile(UploadedFile $file, FileUpload $field): string
+    {
+        $storeMethod = $field->getVisibility() === 'public' ? 'storePublicly' : 'store';
+
+        if (! $field->getStoreAsCallback() || ! ($field->getLivewire()->record)) {
+            return $file->{$storeMethod}($field->getDirectory(), $field->getDiskName());
+        }
+
+        $record = $field->getLivewire()->record;
+        $input = new ParameterBag($record instanceof Model ? $record->attributesToArray() : $record);
+
+        return $file->{$storeMethod.'As'}(
+            $field->getDirectory(),
+            call_user_func($field->storeAsCallback, $file, $input),
+            $field->getDiskName()
+        );
+    }
 }