laravel 中的动态下拉列表

Question

我在表单中使用动态下拉列表 我想根据选择的城市选择区域
这是我的看法

 <div class="form-group col-md-6 form-group{{ $errors->has('city') ? ' has-error' : '' }}">
    <label for="inputPassword4" style="padding-left:35em"><span style="color:red">*</span> city</label>
    <select id="city" name="city" class="form-control">
        <option ></option>
        @foreach($cities as $city)
         <option value="{{$city->id}}">{{$city->city}}</option>
        @endforeach
    </select>
    <h6 class="text-danger">{{ $errors->first('city') }}</h6>
    </div>
</div>

    <div class="form-group col-md-6 form-group{{ $errors->has('area') ? ' has-error' : '' }}">
    <label for="inputEmail4" style="padding-left:50em">area</label>
    <select id="area" name="area" class="form-control">
        <option></option>
    </select>
    <h6 class="text-danger">{{ $errors->first('area') }}</h6>
    </div>

这是脚本

    $('#city').on('change',function(e){

            console.log(e);

        var city= e.target.value;

        $.get('/areas/'+ city, function (data){

              //console.log(data);
            $('#area').empty();

            $.each(data,function(i,area){

            $('#area').append('<option value ="'+area+'">'+area+'</option>');

            });
        });
    });
</script>e

控制器

 public function areas($id)
{

    $area = area::where('city_id', $id)->pluck("area","id");

    return Response::json($area);
}

路线：

Route::get('/areas/{id}', 'locationController@areas');

我使用了这个代码，但它不起作用！

Answer 1

用return response()->json($cities);代替return Response::json($area);

您的控制器将是：

public function areas($id)
{

    $area = area::where('city_id', $id)->pluck("area","id");

    return response()->json($area);
}