php - 传递给 Controller 方法的参数 2 必须在 Request 的实例中，没有给出

Question

我试图在我的 Controller 中将 2 个日期从一个 View 传递到另一个 View ，但出现以下错误:传递给 App\Http\Controllers\GuestController::reservationToGuest() 的参数 2 必须是 Illuminate\Http\Request 的一个实例，没有给出

这是我的第一个 View (具有日期的 View ):

<form action="{{ route('create_guest') }}">                                            
    {{ csrf_field() }}
    <input type="hidden" value="2016-08-26" name="dateOne">
    <input type="hidden" value="2016-08-28" name="dateTwo">
    <button class="btn btn-block btn-success">Proceed To Check In</button>
</form>

(dateOne 和 dateTwo 是我想要在第二个 View 中显示的日期)

路由.php

Route::get('/guest_page/create/{idreservation?}',[
    'uses' => 'GuestController@reservationToGuest',
    'as' => 'create_guest'
]);

GuestController 中的 reservationToGuest

public function reservationToGuest($idreservation = null, Request $request){
    if($idreservation === null){
        return view('guest_page_create', ['idreservation' => 0, 'page_title' => 'Guest Check In', 'check_in_date' => $request['dateOne']]);

    } else{ //else clause works just fine and the dates from the database are inserted into the view
        $details = DB::table('reservation')
            ->where('idreservation', $idreservation)
            ->get();

        return view('guest_page_create', ['idreservation' => $idreservation, 'details' => $details, 'page_title' => 'Guest Check In']);
    }
}

并在“guest_page_create” View 中

<label for="datemask">Check In Date</label>
<input type="date" class="form-control" id="datemask" name="datemask" value="{{ $check_in_date }}">

Answer 1

您不应在必需参数之前传递可选参数。试试这个:

public function reservationToGuest(Request $request, $idreservation = null)
{
    // ...
}