调整文件上传

app/Admin/Controllers/Video/IndexController.php

@@ -67,14 +67,8 @@ class IndexController extends AdminController
                 'min'      => '必须选择所属分类',
             ]);
 
-        $form->file('cover', '封面')
-            ->rules(function ($form) {
-                if ($form->model()->cover != []) {
-                    return 'nullable|image';
-                } else {
-                    return 'required';
-                }
-            })
+        $form->image('cover', '封面')
+            ->rules('image|mimes:jpeg,jpg,png')
             ->move('images/'.date('Y/m/d'))
             ->removable()
             ->uniqueName();
@@ -82,9 +76,9 @@ class IndexController extends AdminController
         $form->file('link', '视频')
             ->rules(function ($form) {
                 if ($form->model()->cover != []) {
-                    return 'nullable|image';
+                    return 'nullable|mimetypes:video/avi,video/mpeg,video/mp4';
                 } else {
-                    return 'required';
+                    return 'required|mimetypes:video/avi,video/mpeg,video/mp4';
                 }
             })
             ->move('videos/'.date('Y/m/d'))