动态依赖选择框

Question

我想从选择CHANTIER中填充选择的OUVRAGE，但是此代码无法正常工作，请问这是什么问题。

知道Ouvrage和Chantier hasMany之间存在关系

mois.blade.php

<div class="container">
  <h1>Laravel 5.4 - Dynamic Dependant Select Example</h1>
    {!! Form::open() !!}
         <div class="form-group">
           <label>Select Chantier:</label>
           {!! Form::select('chantier_id',[''=>'--- Select Chantier ---']+$chantiers,null,['class'=>'form-control']) !!}
          </div>
          <div class="form-group">
            <label>Select Ouvrage:</label>
            {!! Form::select('ouvrage_id',[''=>'--- Select Ouvrage ---'],null,['class'=>'form-control']) !!}
          </div>
          <div class="form-group">
            <button class="btn btn-success" type="submit">Submit</button>
          </div>
  {!! Form::close() !!}
</div>

javascript

 <script type="text/javascript">
      $("select[chantier='chantier_id']").change(function(){
          var chantier_id = $(this).val();
          var token = $("input[chantier='_token']").val();
          $.ajax({
              url: "<?php echo route('select-ajax') ?>",
              method: 'POST',
              data: {chantier_id:chantier_id, _token:token},
              success: function(data) {
                $("select[chantier='ouvrage_id'").html('');
                $("select[chantier='ouvrage_id'").html(data.options);
              }
          });
      });
    </script>

ajax-select.blade.php

 <option>--- Select Ouvrage ---</option>
    @if(!empty($ouvrages))
      @foreach($ouvrages as $key => $value)
        <option value="{{ $key }}">{{ $value }}</option>
      @endforeach
    @endif

路线

   Route::get('mois', 'SalarieController@mois');
    Route::post('select-ajax', ['as'=>'select-ajax','uses'=>'SalarieController@selectAjax']);

我的控制器

  public function mois()
{
  $chantiers = DB::table('chantiers')->pluck("chantier","id")->all();
  return view('salarie.mois',compact('chantiers'));
}
/**
 * Show the application selectAjax.
 *
 * @return \Illuminate\Http\Response
 */
public function selectAjax(Request $request)
{
  if($request->ajax()){
    $ouvrages = DB::table('ouvrages')->where('chantier_id',$request->chantier_id)->pluck("ouvrage","id")->all();
    $data = view('ajax-select',compact('ouvrages'))->render();
    return response()->json(['options'=>$data]);
  }
}