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June 22, 2022 18:50
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| <?php | |
| namespace App\Http\Controllers; | |
| use App\Models\Hasil; | |
| use App\Models\Kriteria; | |
| use App\Models\Penilaian; | |
| use App\Models\Periode; | |
| class TopsisController extends Controller | |
| { | |
| public function __construct() | |
| { | |
| $this->middleware('auth'); | |
| } | |
| public function index() | |
| { | |
| $periode = Periode::all(); | |
| return view('topsis.index', compact('periode')); | |
| } | |
| // perhitungan metode TOPSIS Laravel | |
| public function detail(Periode $periode) | |
| { | |
| $kriteria = Kriteria::all(); | |
| $alternatif = Penilaian::where('periode_id', $periode->periode_id)->groupBy('pegawai_id')->get(); | |
| $bobot = []; | |
| foreach ($alternatif as $a) { | |
| foreach ($kriteria as $k) { | |
| $result = Penilaian::where('periode_id', $periode->periode_id) | |
| ->where('pegawai_id', $a->pegawai_id) | |
| ->where('kriteria_id', $k->kriteria_id) | |
| ->get(); | |
| $total = empty($result) ? 0 : $result->sum('nilai'); | |
| $bobot[$a->pegawai_id][$k->kriteria_id] = $total; | |
| } | |
| } | |
| $pembagi = []; | |
| foreach ($kriteria as $k) { | |
| $total = 0; | |
| foreach ($alternatif as $a) { | |
| $total += pow($bobot[$a->pegawai_id][$k->kriteria_id], 2); | |
| } | |
| $pembagi[$k->kriteria_id] = round(sqrt($total), 5); | |
| } | |
| $matrik_r = []; | |
| $matrik_y = []; | |
| foreach ($alternatif as $a) { | |
| foreach ($kriteria as $k) { | |
| $hasil = $bobot[$a->pegawai_id][$k->kriteria_id] / $pembagi[$k->kriteria_id]; | |
| $matrik_r[$a->pegawai_id][$k->kriteria_id] = round($hasil, 5); | |
| $matrik_y[$a->pegawai_id][$k->kriteria_id] = $matrik_r[$a->pegawai_id][$k->kriteria_id] * $k->bobot_kriteria; | |
| } | |
| } | |
| $positif = []; | |
| $negatif = []; | |
| foreach ($kriteria as $k) { | |
| $positif[$k->kriteria_id] = max(array_column($matrik_y, $k->kriteria_id)); | |
| $negatif[$k->kriteria_id] = min(array_column($matrik_y, $k->kriteria_id)); | |
| } | |
| $jarak_positif = []; | |
| $jarak_negatif = []; | |
| $nilai_v = []; | |
| $hasil = []; | |
| foreach ($alternatif as $a) { | |
| $total_p = 0; | |
| $total_n = 0; | |
| foreach ($kriteria as $k) { | |
| $total_p += pow($positif[$k->kriteria_id] - $matrik_y[$a->pegawai_id][$k->kriteria_id], 2); | |
| $total_n += pow($matrik_y[$a->pegawai_id][$k->kriteria_id] - $negatif[$k->kriteria_id], 2); | |
| } | |
| $jarak_positif[$a->pegawai_id] = round(sqrt($total_p), 5); | |
| $jarak_negatif[$a->pegawai_id] = round(sqrt($total_n), 5); | |
| $nilai_v[$a->pegawai_id] = round($jarak_negatif[$a->pegawai_id] / ($jarak_negatif[$a->pegawai_id] + $jarak_positif[$a->pegawai_id]), 5); | |
| $hasil[] = [ | |
| 'pegawai_id' => $a->pegawai_id, | |
| 'nilai_topsis' => $nilai_v[$a->pegawai_id], | |
| ]; | |
| } | |
| $col = array_column($hasil, 'nilai_topsis'); | |
| array_multisort($col, SORT_DESC, $hasil); | |
| $peringkat = 1; | |
| foreach ($hasil as $val) { | |
| Hasil::updateOrCreate([ | |
| 'periode_id' => $periode->periode_id, | |
| 'pegawai_id' => $val['pegawai_id'], | |
| ], [ | |
| 'nilai_topsis' => $val['nilai_topsis'], | |
| 'peringkat' => $peringkat++, | |
| ]); | |
| } | |
| $hasil = Hasil::where('periode_id', $periode->periode_id)->orderBy('nilai_topsis', 'desc')->get(); | |
| return view('topsis.detail', compact( | |
| 'kriteria', | |
| 'alternatif', | |
| 'bobot', | |
| 'pembagi', | |
| 'matrik_r', | |
| 'matrik_y', | |
| 'positif', | |
| 'negatif', | |
| 'jarak_positif', | |
| 'jarak_negatif', | |
| 'nilai_v', | |
| 'hasil' | |
| )); | |
| } | |
| } |
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