Bagian 3 dari seri
Input Nilai Alternatif SAW Laravel
Diterbitkan 21 September 2026
Pada bagian ini buat form untuk mengisi nilai setiap alternatif pada setiap kriteria.
Buat Controller
php artisan make:controller PenilaianController
PenilaianController
app/Http/Controllers/PenilaianController.php:
<?php
namespace App\Http\Controllers;
use App\Models\Alternatif;
use App\Models\Kriteria;
use App\Models\Penilaian;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
class PenilaianController extends Controller
{
public function index()
{
$kriteria = Kriteria::orderBy('kode')->get();
$alternatif = Alternatif::orderBy('kode')->get();
$records = Penilaian::all()
->keyBy(function ($item) {
return $item->alternatif_id
. '-'
. $item->kriteria_id;
});
return view('penilaian.index', compact(
'kriteria',
'alternatif',
'records'
));
}
public function store(Request $request)
{
$kriteria = Kriteria::orderBy('kode')->get();
$alternatif = Alternatif::orderBy('kode')->get();
if ($kriteria->isEmpty() || $alternatif->isEmpty()) {
return back()->withErrors(
'Kriteria dan alternatif harus tersedia.'
);
}
$request->validate([
'nilai' => ['required', 'array'],
'nilai.*' => ['required', 'array'],
'nilai.*.*' => [
'required',
'numeric',
'gte:0',
],
]);
DB::transaction(function () use (
$request,
$kriteria,
$alternatif
) {
foreach ($alternatif as $itemAlternatif) {
foreach ($kriteria as $itemKriteria) {
$nilai = $request->input(
"nilai.{$itemAlternatif->id}.{$itemKriteria->id}"
);
Penilaian::updateOrCreate(
[
'alternatif_id' => $itemAlternatif->id,
'kriteria_id' => $itemKriteria->id,
],
[
'nilai' => (float) $nilai,
]
);
}
}
Alternatif::query()->update([
'nilai_preferensi' => null,
'ranking' => null,
]);
});
return redirect()
->route('penilaian.index')
->with(
'success',
'Nilai alternatif berhasil disimpan.'
);
}
}
Route
Tambahkan pada grup auth:
use App\Http\Controllers\PenilaianController;
Route::get(
'/penilaian',
[PenilaianController::class, 'index']
)->name('penilaian.index');
Route::post(
'/penilaian',
[PenilaianController::class, 'store']
)->name('penilaian.store');
Tambahkan Menu
<a
class="nav-link text-white"
href="{{ route('penilaian.index') }}">
Penilaian
</a>
View Penilaian
resources/views/penilaian/index.blade.php:
@extends('layouts.app')
@section('title', 'Penilaian')
@section('content')
<div class="d-flex justify-content-between align-items-center mb-3">
<div>
<h2 class="h4 mb-1">Penilaian Alternatif</h2>
<p class="text-muted mb-0">
Masukkan nilai setiap alternatif pada setiap kriteria.
</p>
</div>
</div>
@if($kriteria->isEmpty())
<div class="alert alert-warning">
Belum ada kriteria.
</div>
@elseif($alternatif->isEmpty())
<div class="alert alert-warning">
Belum ada alternatif.
</div>
@else
<form
method="POST"
action="{{ route('penilaian.store') }}">
@csrf
<div class="card border-0 shadow-sm">
<div class="card-body">
<div class="table-responsive">
<table
class="table table-bordered align-middle text-center">
<thead>
<tr>
<th class="text-start">Alternatif</th>
@foreach($kriteria as $itemKriteria)
<th>
{{ $itemKriteria->kode }}
<div class="small fw-normal">
{{ $itemKriteria->nama }}
</div>
<div class="small fw-normal text-muted">
{{ ucfirst($itemKriteria->atribut) }}
|
Bobot: {{ $itemKriteria->bobot }}
</div>
</th>
@endforeach
</tr>
</thead>
<tbody>
@foreach($alternatif as $itemAlternatif)
<tr>
<th class="text-start">
{{ $itemAlternatif->kode }}
-
{{ $itemAlternatif->nama }}
</th>
@foreach($kriteria as $itemKriteria)
@php
$key =
$itemAlternatif->id
. '-'
. $itemKriteria->id;
$record =
$records->get($key);
$nilaiLama = old(
"nilai.{$itemAlternatif->id}.{$itemKriteria->id}",
$record?->nilai
);
@endphp
<td style="min-width:150px">
<input
type="number"
name="nilai[{{ $itemAlternatif->id }}][{{ $itemKriteria->id }}]"
value="{{ $nilaiLama }}"
class="form-control text-end"
step="0.000001"
min="0"
required>
</td>
@endforeach
</tr>
@endforeach
</tbody>
</table>
</div>
<button class="btn btn-primary">
Simpan Penilaian
</button>
</div>
</div>
</form>
@endif
@endsection
Contoh Data Tutorial
Masukkan:
A1:
C1 = 80
C2 = 8
C3 = 9
A2:
C1 = 70
C2 = 9
C3 = 8
A3:
C1 = 75
C2 = 7
C3 = 9
Checkpoint
Pastikan:
- semua alternatif tampil;
- semua kriteria tampil;
- nilai dapat disimpan;
- nilai lama tampil kembali;
- semua sel wajib diisi.
