文章增加跳转链接

app/Admin/Controllers/Article/IndexController.php

@@ -58,7 +58,7 @@ class IndexController extends AdminController
             ->help('只有领导班子需要添加');
 
         $form->image('cover', '封面')
-             ->move('images/' . date('Y/m/d'))
+            ->move('images/'.date('Y/m/d'))
             ->removable()
             ->uniqueName();
 
@@ -72,6 +72,7 @@ class IndexController extends AdminController
         ];
         $form->datetime('created_at', '发布时间');
         $form->switch('status', '状态')->states($states);
+        $form->url('url', '外链地址');
 
         return $form;
     }