Penggunaan Eloquent ORM(Object-Relational Mapping)

app/Http/Controllers/SiswaController.php

@@ -3,96 +3,66 @@
 namespace App\Http\Controllers;
 
 use App\Models\Siswa;
+use App\Models\Kelas;
 use Illuminate\Http\Request;
 
 class SiswaController extends Controller
 {
     public function index()
     {
-        $siswas = Siswa::all();
+        $siswas = Siswa::with('kelas')->get();
         return view('siswa.index', compact('siswas'));
     }
 
     public function create()
     {
-        return view('siswa.create');
+        $kelases = Kelas::all();
+        return view('siswa.create', compact('kelases'));
     }
 
     public function store(Request $request)
     {
         $request->validate([
             'nama' => 'required|string|max:255',
-            'kelas' => 'required|string|max:50',
+            'kelas_id' => 'required|exists:kelas,id',
             'umur' => 'required|integer',
             'absen' => 'required|integer',
         ]);
 
-        Siswa::create([
+        Siswa::create($request->all());
-            'nama' => $request->nama,
-            'kelas' => $request->kelas,
-            'umur' => $request->umur,
-            'absen' => $request->absen,
-        ]);
 
         return redirect()->route('siswa.index')->with('success', 'Data berhasil ditambahkan!');
     }
 
     public function edit($id)
     {
-        $siswa = Siswa::find($id);
+    $siswa = Siswa::findOrFail($id);
+    $kelases = Kelas::all(); // <-- Ambil semua kelas dari tabel kelas
 
-        if (!$siswa) {
+    return view('siswa.edit', compact('siswa', 'kelases'));
-            return view('siswa.notfound', ['id' => $id]);
-        }
-
-        return view('siswa.edit', compact('siswa', 'id'));
     }
 
+
     public function update(Request $request, $id)
     {
         $request->validate([
             'nama' => 'required|string|max:255',
-            'kelas' => 'required|string|max:50',
+            'kelas_id' => 'required|exists:kelas,id',
             'umur' => 'required|integer',
             'absen' => 'required|integer',
         ]);
 
-        $siswa = Siswa::find($id);
+        $siswa = Siswa::findOrFail($id);
-
+        $siswa->update($request->all());
-        if (!$siswa) {
-            return view('siswa.notfound', ['id' => $id]);
-        }
-
-        $siswa->update([
-            'nama' => $request->nama,
-            'kelas' => $request->kelas,
-            'umur' => $request->umur,
-            'absen' => $request->absen,
-        ]);
 
         return redirect()->route('siswa.index')->with('success', 'Data siswa berhasil diupdate!');
     }
 
-    public function show($id)
-    {
-        $siswa = Siswa::find($id);
-
-        if (!$siswa) {
-            return view('siswa.notfound', ['id' => $id]);
-        }
-
-        return view('siswa.detail', compact('siswa'));
-    }
-
     public function destroy($id)
     {
-        $siswa = Siswa::find($id);
+        $siswa = Siswa::findOrFail($id);
+        $siswa->delete();
 
-        if ($siswa) {
+        return redirect()->route('siswa.index')->with('success', 'Data berhasil dihapus.');
-            $siswa->delete();
-            return redirect()->route('siswa.index')->with('success', 'Data berhasil dihapus.');
-        }
-
-        return redirect()->route('siswa.index')->with('error', 'Data tidak ditemukan.');
     }
 }

app/Models/Kelas.php

@@ -0,0 +1,19 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Kelas extends Model
+{
+    use HasFactory;
+
+    protected $table = 'kelas';
+    protected $fillable = ['nama'];
+
+    public function siswas()
+    {
+        return $this->hasMany(Siswa::class, 'kelas_id', 'id');
+    }
+}

app/Models/Siswa.php

@@ -2,13 +2,17 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 
 class Siswa extends Model
 {
-    protected $table = 'siswa';
+    use HasFactory;
 
-    protected $fillable = [
+    protected $fillable = ['nama', 'kelas_id', 'umur', 'absen'];
-        'nama', 'kelas', 'umur', 'absen'
+
-    ];
+    public function kelas()
+    {
+        return $this->belongsTo(Kelas::class, 'kelas_id', 'id');
+    }
 }

database/migrations/2025_07_22_093135_create_siswa_table.php

@@ -1,31 +0,0 @@
-<?php
-
-use Illuminate\Database\Migrations\Migration;
-use Illuminate\Database\Schema\Blueprint;
-use Illuminate\Support\Facades\Schema;
-
-return new class extends Migration
-{
-    /**
-     * Run the migrations.
-     */
-    public function up(): void
-    {
-        Schema::create('siswa', function (Blueprint $table) {
-            $table->id();
-            $table->string('nama');
-            $table->string('kelas');
-            $table->integer('umur');
-            $table->integer('absen');
-            $table->timestamps();
-        });
-    }
-
-    /**
-     * Reverse the migrations.
-     */
-    public function down(): void
-    {
-        Schema::dropIfExists('siswa');
-    }
-};

database/migrations/2025_07_24_025000_create_kelas_table.php

@@ -0,0 +1,19 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    public function up(): void {
+        Schema::create('kelas', function (Blueprint $table) {
+            $table->id();
+            $table->string('nama');
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void {
+        Schema::dropIfExists('kelas');
+    }
+};

database/migrations/2025_07_24_025545_create_siswas_table.php

@@ -0,0 +1,22 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration {
+    public function up(): void {
+        Schema::create('siswas', function (Blueprint $table) {
+            $table->id();
+            $table->string('nama');
+            $table->foreignId('kelas_id')->constrained('kelas')->onDelete('cascade');
+            $table->integer('umur');
+            $table->integer('absen');
+            $table->timestamps();
+        });
+    }
+
+    public function down(): void {
+        Schema::dropIfExists('siswas');
+    }
+};

database/seeders/DatabaseSeeder.php

@@ -15,8 +15,5 @@ class DatabaseSeeder extends Seeder
     {
         // User::factory(10)->create();
 
-        $this->call([
-        SiswaSeeder::class,
-        ]);
     }
 }

database/seeders/KelasSeeder.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace Database\Seeders;
+
+use Illuminate\Database\Console\Seeds\WithoutModelEvents;
+use Illuminate\Database\Seeder;
+use App\Models\Kelas;
+
+class KelasSeeder extends Seeder
+{
+    /**
+     * Run the database seeds.
+     */
+    public function run(): void
+    {
+        $kelases = [
+        'XIII SIJA A',
+        'XIII SIJA B',
+        'XIII RPL A',
+        'XIII RPL B',
+        'XII',
+        'XIII'
+        ];
+
+        foreach ($kelases as $kelas) {
+            Kelas::create(['nama' => $kelas]);
+        }
+    }
+}

database/seeders/SiswaSeeder.php

@@ -4,7 +4,6 @@ namespace Database\Seeders;
 
 use Illuminate\Database\Console\Seeds\WithoutModelEvents;
 use Illuminate\Database\Seeder;
-use App\Models\Siswa;
 
 class SiswaSeeder extends Seeder
 {
@@ -13,18 +12,21 @@ class SiswaSeeder extends Seeder
      */
     public function run(): void
     {
-        Siswa::create([
+        $XIII = Kelas::where('kelas', 'XIII')->first();
-            'nama' => 'syifa',
+        $XII = Kelas::where('kelas', 'XII')->first();
-            'kelas' => 'XIII',
+
+        // Cek apakah kelas tersedia
+        if (!$XIII || !$XII) {
+            throw new \Exception("Kelas belum tersedia. Pastikan KelasSeeder sudah jalan.");
+        }
+
+        DB::table('siswas')->insert([
+            'nama' => 'Syifa',
+            'kelas_id' => 2, //ini nama kolom baru
             'umur' => 19,
             'absen' => 34,
-        ]);
+            'created_at' => now(),
-
+            'updated_at' => now(),
-        Siswa::create([
-            'nama' => 'syifa maulidya',
-            'kelas' => 'XIII SIJA A',
-            'umur' => 18,
-            'absen' => 35,
         ]);
     }
 }

resources/views/siswa/create.blade.php

@@ -37,7 +37,7 @@
             margin-bottom: 8px;
             color: #34495e;
         }
-        input {
+        input, select {
             width: 100%;
             padding: 12px;
             margin-bottom: 20px;
@@ -46,7 +46,7 @@
             font-size: 16px;
             transition: all 0.3s ease;
         }
-        input:focus {
+        input:focus, select:focus {
             outline: none;
             border: 1px solid #3498db;
             box-shadow: 0 0 8px rgba(52,152,219,0.5);
@@ -89,13 +89,22 @@
         </div>
     @endif
 
+    @php
+        use App\Models\Kelas;
+    @endphp
+
     <form action="{{ route('siswa.store') }}" method="POST">
         @csrf
         <label>Nama:</label>
         <input type="text" name="nama" value="{{ old('nama') }}" required>
 
         <label>Kelas:</label>
-        <input type="text" name="kelas" value="{{ old('kelas') }}" required>
+        <select name="kelas_id" class="form-control" required>
+        <option value="">-- Pilih Kelas --</option>
+        @foreach($kelases as $kelas)
+        <option value="{{ $kelas->id }}">{{ $kelas->nama }}</option>
+        @endforeach
+        </select>
 
         <label>Umur:</label>
         <input type="number" name="umur" value="{{ old('umur') }}" required>

resources/views/siswa/edit.blade.php

@@ -37,7 +37,7 @@
             margin-bottom: 8px;
             color: #34495e;
         }
-        input {
+        input, select {
             width: 100%;
             padding: 12px;
             margin-bottom: 20px;
@@ -46,7 +46,7 @@
             font-size: 16px;
             transition: all 0.3s ease;
         }
-        input:focus {
+        input:focus, select:focus {
             outline: none;
             border: 1px solid #3498db;
             box-shadow: 0 0 8px rgba(52,152,219,0.5);
@@ -66,6 +66,14 @@
         .button:hover {
             background: #2980b9;
         }
+        .alert {
+            background: #f8d7da;
+            color: #721c24;
+            padding: 15px;
+            border-radius: 10px;
+            margin-bottom: 20px;
+            border-left: 5px solid #f5c6cb;
+        }
     </style>
 </head>
 <body>
@@ -81,15 +89,26 @@
         </div>
     @endif
 
-    <form action="{{ route('siswa.update', $id) }}" method="POST">
+    @php
+        use App\Models\Kelas;
+    @endphp
+
+    <form action="{{ route('siswa.update', $siswa->id) }}" method="POST">
     @csrf
     @method('PUT')
 
-        <label>Nama:</label>
+    <label>Nama:</label>
-        <input type="text" name="nama" value="{{ old('nama', $siswa['nama']) }}" required>
+    <input type="text" name="nama" value="{{ old('nama', $siswa['nama']) }}" required>
 
-        <label>Kelas:</label>
+    <label for="kelas_id">Kelas:</label>
-        <input type="text" name="kelas" value="{{ old('kelas', $siswa['kelas']) }}" required>
+    <select name="kelas_id" required>
+        <option value="" disabled>-- Pilih Kelas --</option>
+        @foreach ($kelases as $kelas)
+            <option value="{{ $kelas->id }}" {{ $siswa->kelas_id == $kelas->id ? 'selected' : '' }}>
+                {{ $kelas->nama }}
+            </option>
+        @endforeach
+    </select>
 
         <label>Umur:</label>
         <input type="number" name="umur" value="{{ old('umur', $siswa['umur']) }}" required>

resources/views/siswa/index.blade.php

@@ -112,7 +112,7 @@
 <tr>
     <td>{{ $loop->iteration }}</td>
     <td>{{ $siswa->nama }}</td>
-    <td>{{ $siswa->kelas }}</td>
+    <td>{{ $siswa->kelas->nama ?? '-' }}</td>
     <td>{{ $siswa->umur }}</td>
     <td>{{ $siswa->absen }}</td>
     <td>