Pre-fill support for file input (#222)

Co-authored-by: Julien Nahum <julien@nahum.net>

app/Http/Requests/UploadAssetRequest.php

@@ -16,15 +16,20 @@ class UploadAssetRequest extends FormRequest
      */
     public function rules()
     {
+        $fileTypes = [
+            'png',
+            'jpeg',
+            'jpg',
+            'bmp',
+            'gif',
+            'svg'
+        ];
+        if ($this->offsetExists('type') && $this->get('type') === 'files') {
+            $fileTypes = [];
+        }
+
         return [
-            'url' => ['required',new StorageFile(self::FORM_ASSET_MAX_SIZE, [
-                'png',
-                'jpeg',
-                'jpg',
-                'bmp',
-                'gif',
-                'svg'
-            ])],
+            'url' => ['required', new StorageFile(self::FORM_ASSET_MAX_SIZE, $fileTypes)],
         ];
     }
 }

app/Http/Resources/FormSubmissionResource.php

@@ -46,7 +46,9 @@ class FormSubmissionResource extends JsonResource
         });
         foreach ($fileFields as $field) {
             if (isset($data[$field['id']]) && !empty($data[$field['id']])) {
-                $data[$field['id']] = collect($data[$field['id']])->map(function ($file) {
+                $data[$field['id']] = collect($data[$field['id']])->filter(function ($file) {
+                    return $file !== null && $file;
+                })->map(function ($file) {
                     return [
                         'file_url' => route('open.forms.submissions.file', [$this->form_id, $file]),
                         'file_name' => $file,