表单文件上传问题修复

src/Form.php

@@ -560,7 +560,7 @@ class Form implements Renderable
      */
     public function isAjaxRequest()
     {
-        $request = Request::capture();
+        $request = request();
 
         return $request->ajax() && !$request->pjax();
     }

src/Form/Concerns/Files.php

@@ -2,6 +2,7 @@
 
 namespace Dcat\Admin\Form\Concerns;
 
+use Symfony\Component\HttpFoundation\File\UploadedFile;
 use Illuminate\Support\Facades\Input;
 use Dcat\Admin\Form\Field;
 

src/Form/Field/UploadField.php

@@ -2,9 +2,7 @@
 
 namespace Dcat\Admin\Form\Field;
 
-use Illuminate\Filesystem\Filesystem;
 use Illuminate\Support\Arr;
-use Illuminate\Support\Facades\Input;
 use Illuminate\Support\Facades\Storage;
 use Illuminate\Support\Facades\Validator;
 use Symfony\Component\Finder\Finder;