如何在控制器中使用 count()？

Question

如何获取此处的行数？当我使用 $count = $flights->count(); 时出现此错误 Count all elements in an array, or something in an object

public function index(Request $request)
        {
            $airline  = airline::all(); 
            $search = $request->get('search');
                    if($search!=""){
                        $flights =  DB::table('flights')
                        ->join('airlines', 'flights.AirlineId', '=', 'airlines.id')
                        ->select('flights.*', 'airlines.name', 'airlines.country','airlines.logo')
                        ->where(DB::raw("CONCAT(flights.id,' ',flights.flightDesignator,' ',airlines.country,' ',airlines.name,' ',flights.departureFrom,' ',flights.arriveTo,' ',flights.departureTime,' ',flights.ArrivalTime)"),'LIKE','%'.$search.'%')
                        ->paginate(4);
                $flights->appends(['search' => $search]);
                $count = $flights->count();
                if($count == 0)
                return view('admin.flights')->with(['flights' => $flights,'airline' => $airline, 'NoFound' => 'There is no result ']);
                else
                return view('admin.flights')->with(['flights' => $flights,'airline' => $airline,'found' => ' records founded']);
               
                
            }
    }

Answer 1

尝试使用集合

$data = collect($flights);

然后你可以用

来计算

$data->count();

Answer 2

使用了分页所以改一下就可以了

$count = $flights->count(); 到 $count = $flights->total();

如何在控制器中使用 count()？

how to use count() in controller?

php

mysql

laravel

web