尝试

app/Http/Controllers/Admin/ProjectController.php

@@ -51,11 +51,6 @@ class ProjectController extends BaseController
     public function get(Request $request)
     {
         $items = $this->model->where('id','!=','1')->orderBy('id', 'desc')->orderBy('created_at', 'desc');
-        $user_id = request('user_id');
-        if ($user_id == null)
-        {
-            $user_id = 0;
-        }
         $tmp_items = collect(['name']);
         foreach($tmp_items as $tmp_item) {
             if($request->has($tmp_item) && !empty($request->input($tmp_item))) {
@@ -78,7 +73,11 @@ class ProjectController extends BaseController
         if($request->input('type') == 'apply') {
             $items = $items->whereNotNull('user_id');
         }
-        if($request->input('user_id')){
+        $user_id = request('user_id');
+        if(empty($user_id)){
+            $user_id = 0;
+        }
+        if($user_id){
             $items->whereHas('project_user',function ($query){
                 $query->where('project_role_id','=','4');
                 $query->whereHas('user',function ($query){

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

@@ -25,7 +25,7 @@
                     <div class="layui-inline">
                         <div class="layui-input-inline">
                             <select name="user_id">
-                                <option selected hidden value="0">项目经理</option>
+                                <option value="0">项目经理</option>
                                 {{--<option value="0">项目经理</option>--}}
                                 @foreach($user as $option)
                                     <option value="{{ $option['user_id'] }}" {{ request('user_id') == $option['user_id'] ? 'selected' : ''  }}>{{ $option['name'] }}</option>