LARAVEL 9: How to export data to excel based on filter data (id, month and years) using maatwebsite - excel

Question

I'm making an export data to excel based on employee_id filter, month and year of absence:
.
when the filter is submitted the data appears in the table below:
I have managed to get the data, but when the Download Excel button is clicked, the contents are just empty Excel, like this:
the data does not enter the excel.
My Controller:
public function rekapabsensiExcel(Request $request)
{
$idkaryawan = $request->id_karyawan;
$bulan = $request->query('bulan',Carbon::now()->format('m'));
$tahun = $request->query('tahun',Carbon::now()->format('Y'));
// simpan session
$idkaryawan = $request->session()->get('idkaryawan');
$bulan = $request->session()->get('bulan');
$tahun = $request->session()->get('tahun',);
// dd($idkaryawan,$bulan,$tahun );
if(isset($idkaryawan) && isset($bulan) && isset($tahun))
{
$data = Absensi::where('id_karyawan', $idkaryawan)
->whereMonth('tanggal', $bulan)
->whereYear('tanggal',$tahun)
->get();
// dd($data);
}else{
$data = Absensi::all();
}
return Excel::download(new RekapabsensiExport(['data'=>$data, 'idkaryawan'=>$idkaryawan]),'rekap_absensi_bulanan.xlsx');
}
My RekapAbsensiExport.php:
<?php
namespace App\Exports;
use App\Models\Absensi;
use Maatwebsite\Excel\Concerns\FromCollection;
class RekapabsensiExport implements FromCollection
{
protected $id_karyawan;
// function __construct($id_karyawan) {
// $this->id_karyawan = $id_karyawan;
// }
public function headings(): array {
return [
"No. ID","ID Karyawan","NIK","Tanggal","Jam Kerja","Jam Masuk","Jam Pulang",
"Scan Masuk","Scan Pulang","Normal","Riil","Terlambat","Plg Cepat","Absent",
"Lembur","Jml Jam Kerja","pengecualian","Harus C/I","Harus C/O","Departemen",
"Hari Normal","Akhir Pekan","Hari Libur","Jml Kehadiran","Lembur Hari Normal",
"Lembur Akhir Pekan","Lembur Hari Libur"
];
}
/**
* #return \Illuminate\Support\Collection
*/
public function collection()
{
return Absensi::where('id_karyawan',$this->id_karyawan)->get();
}
}
What part did I go wrong? Please help

Answer 1

Currently, you get no response to this statement because $this->id_karyawan is null as you have not properly passed the value through.
return Absensi::where('id_karyawan', $this->id_karyawan)->get();
Above, you are passing an array of values to the Export class. But your commented-out constructor function is only configured to accept a single parameter. If we stick to single parameters, you could do something like this.
return Excel::download(new RekapabsensiExport($data, $idkaryawan),'rekap_absensi_bulanan.xlsx');
Then your export constructor would look like this.
protected $data;
protected $id_karyawan;
function __construct($data, $id_karyawan) {
$this->data = $data;
$this->id_karyawan = $id_karyawan;
}