127 lines
3.7 KiB
PHP
127 lines
3.7 KiB
PHP
<?php
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namespace App\Http\Controllers;
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use Illuminate\Http\Request;
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use App\Models\Kriteria;
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use App\Models\Alternatif;
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use App\Models\PerbandinganKriteria;
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use App\Models\BobotKriteria;
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use App\Models\Makanan;
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use Illuminate\Support\Facades\Session;
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class ProsesController extends Controller
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{
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public function showPerbandingan()
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{
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$kriterias = Kriteria::all();
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return view('admin.proses.perbandingan', compact('kriterias'));
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}
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public function prosesSementara(Request $request)
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{
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$request->validate([
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'nilai' => 'required|array',
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]);
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$kriterias = Kriteria::all();
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$nilai = [];
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foreach ($kriterias as $baris) {
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foreach ($kriterias as $kolom) {
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if ($baris->id != $kolom->id) {
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PerbandinganKriteria::where([
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['kriteria_id_1', $baris->id],
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['kriteria_id_2', $kolom->id]
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])->delete();
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}
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}
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}
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foreach ($kriterias as $baris) {
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foreach ($kriterias as $kolom) {
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if ($baris->id == $kolom->id) {
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$nilai[$baris->id][$kolom->id] = 1;
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} elseif (isset($request->nilai[$baris->id][$kolom->id])) {
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$val = floatval($request->nilai[$baris->id][$kolom->id]);
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$nilai[$baris->id][$kolom->id] = $val;
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$nilai[$kolom->id][$baris->id] = 1 / $val;
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PerbandinganKriteria::updateOrCreate(
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[
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'kriteria_id_1' => $baris->id,
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'kriteria_id_2' => $kolom->id
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],
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[
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'nilai' => $val
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]
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);
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}
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}
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}
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Session::put('matriks', $nilai);
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return redirect()->route('perbandingan');
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}
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public function simpanPerbandingan()
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{
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$matriks = Session::get('matriks');
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if (!$matriks) {
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return redirect()->route('perbandingan')->with('error', 'Belum ada data untuk disimpan.');
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}
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Session::put('matriks_perbandingan', $matriks);
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return redirect()->route('hasil.normalisasi')->with('success', 'Data berhasil disimpan!');
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}
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public function hasilNormalisasi()
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{
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$kriterias = Kriteria::all();
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$matriks = Session::get('matriks_perbandingan');
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if (!$matriks) {
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return redirect()->route('perbandingan')->with('error', 'Data perbandingan belum tersedia.');
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}
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$jumlahKolom = [];
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foreach ($kriterias as $kriteria) {
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$id = $kriteria->id;
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$jumlahKolom[$id] = 0;
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foreach ($matriks as $baris) {
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$jumlahKolom[$id] += $baris[$id];
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}
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}
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$normalisasi = [];
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foreach ($kriterias as $baris) {
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$row = [];
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foreach ($kriterias as $kolom) {
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$row[] = $matriks[$baris->id][$kolom->id] / $jumlahKolom[$kolom->id];
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}
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$normalisasi[] = $row;
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}
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$bobot = [];
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foreach ($normalisasi as $baris) {
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$bobot[] = array_sum($baris) / count($baris);
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}
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foreach ($bobot as $index => $value) {
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BobotKriteria::updateOrCreate(
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['kriteria_id' => $kriterias[$index]->id],
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['bobot' => $value]
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);
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}
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Session::put('bobot_kriteria', $bobot);
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return view('admin.proses.normalisasi', [
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'kriterias' => $kriterias,
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'normalisasi' => $normalisasi,
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'bobot' => $bobot
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]);
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}
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}
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