Question

我想将$data变量从findCity()函数传递给json返回到索引函数中的视图。

我该怎么办呢？

class HomeController extends Controller
{  
    public function index(Request $request)
    {
        $countries = Location::select('country_name')
            ->groupBy('country_name', 'country_name')
            ->get();

        $cities = Location::select('city_name','city_name')
            ->where('region_name', $request->region_name)
            ->groupBy('city_name', 'city_name')
            ->get();

        $areas = Area::get()->toTree();

        return view('home', compact('areas','countries', 'cities'));
    }

    public function findCity(Request $request)
    {
        $data = Location::select('city_name','city_name')
            ->where('region_name', $request->region_name)
            ->groupBy('city_name', 'city_name')
            ->get();

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

Ajax代码：

$(document).on('change','.regionName',function(){

    //console.log("hmm its change");

    var cat_id=$(this).val();

    //console.log(cat_id);

    var div=$(this).parent();

    var op=" ";

    $.ajax({
        type:'get',
        url:'{!!URL::to('findCityName')!!}',
        data:{'region_name':cat_id},
        success:function(data){

            //console.log('success');

            //console.log(data);

            //console.log(data.length);

            op+='<option value="0" selected disabled>Choose City</option>';
            for(var i=0;i<data.length;i++){

            op+='<option value="{{ route('user.location.store', $cities) }}">'+data[i].city_name+'</option>';

           }


        div.find('.cityName').html(" ");

        div.find('.cityName').append(op);


        },
        error:function(){

        }
    });
});
});

Answer 1

您可以将findCity()设为静态方法，并从index()方法中调用它：

public function index(Request $request)
{
    // The rest of your code here...

    // Calling the static method
    $city = self::findCity($request);

    return view('home', compact('areas', 'countries', 'cities', 'city'));
}

public static function findCity(Request $request)
{
    $data = Location::select('city_name', 'city_name')
        ->where('region_name', $request->region_name)
        ->groupBy('city_name', 'city_name')->get();

    return $data;
}

详细了解static methods in the PHP documentation。

Answer 2

您需要使用函数调用，传递和返回。像这个。我认为它可以帮助你。

class HomeController extends Controller
{  
    public function index(Request $request)
    {
        $countries = Location::select('country_name')
            ->groupBy('country_name', 'country_name')
            ->get();

        $cities = $this->findCity($request)

        $areas = Area::get()->toTree();

        return view('home', compact('areas','countries', 'cities'));
    }

    public function findCity($request)
    {
        $data = Location::select('city_name','city_name')
            ->where('region_name', $request->region_name)
            ->groupBy('city_name', 'city_name')
            ->get();

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

如何将变量从另一个函数传递给索引函数中的视图

2 个答案: