Laravel Livewire 组件偏移

Question

Livewire我正在尝试通过称为内部组件的 laravel 控制器获取一些技术人员数据。在某些情况下，控制器返回null是因为没有相关技术人员。这是我渲染视图的 livewire 组件：class TechniciansAssociated extends Component{    public function render()    {        $technicians = (new HomeController())->getTechnicians();        return view('livewire.dashboard.technicians-associated', [            'technicians' => $technicians,        ]);    }}这里从家庭控制器调用函数：public function getTechnicians(){    $customer_ids = json_decode(User::find(Auth::id())->userCustomers->customer_id,true);    $technicians_data = DB::connection('mysql')        -> select('SELECT distinct users.id, users.name, users.surname, users.lastname, users.email, users.cargo, users.photo           FROM users           INNER JOIN contractsproductsmulti AS cpm ON users.id = cpm.userId           INNER JOIN contractsproducts AS cp ON cp.id = cpm.contractproduct_id           INNER JOIN contracts AS cont ON cont.id = cp.idcontract           WHERE users.isActive = 1 AND cont.idCustomer IN (?)', $customer_ids        );    if (count($technicians_data) > 0){        return $technicians_data;    }    return null;}最后，当尝试获取渲染 livewire 视图的主视图时，我遇到了错误@section('content')<section id="dash-cust-info">    <div class="row p-t-30 p-b-30">        <div class="col-md-6">            <h4>Customer info</h4>        </div>        <div class="col-md-3">            <h4>Comm_1</h4>            <div class="card no-border no-margin">                @livewire('dashboard.commercials-associated')            </div>        </div>        <div class="col-md-3">            <h4>Comm_2</h4>            <div class="card no-border no-margin">                @livewire('dashboard.technicians-associated')            </div>        </div>    </div>....错误：Undefined offset: 1 (View: /......../resources/views/home.blade.php)

Answer 1

我想这个答案为 livewire 中的此类问题提供了很好的解释。把它留在这里，这样以后遇到这种问题的人都会得到帮助。不客气

Answer 2

好的，LiveWire 组件需要一个 HTML 元素才能在它自己的视图上获得结果。例如：

<div> //missed on my code

    @foreach($users as $user)

        {{$user->id}}

    @endforeach

</div>