Fix #116, #118, #119

app/Http/Controllers/Admin/UserController.php

@@ -73,7 +73,7 @@ class UserController extends Controller
         }
 
         if (isset($group)) {
-            $query->whereGroupId($group);
+            $query->whereUserGroupId($group);
         }
 
         if (isset($level)) {

app/Observers/UserObserver.php

@@ -19,7 +19,7 @@ class UserObserver
         $subscribe->code = Helpers::makeSubscribeCode();
         $subscribe->save();
 
-        $allowNodes = $user->nodes()->whereType(4)->pluck('id');
+        $allowNodes = $user->nodes()->whereType(4)->get()->pluck('id');
         if ($allowNodes) {
             addUser::dispatch($user->id, $allowNodes);
         }

resources/views/admin/user/index.blade.php

@@ -56,7 +56,7 @@
                     </div>
                     <div class="form-group col-xxl-1 col-lg-3 col-md-3 col-4">
                         <select class="form-control" id="level" name="level" onChange="Search()">
-                            <option value="" hidden>用户分组</option>
+                            <option value="" hidden>用户等级</option>
                             @foreach($levels as $key => $level)
                                 <option value="{{$key}}">{{$level}}</option>
                             @endforeach