fix db, admin & siswa update

app/Http/Controllers/Admin/MapelController.php

@@ -1,102 +1,115 @@
 <?php
-// ============================================================
-// FILE 1: app/Http/Controllers/Admin/MapelController.php
-// ============================================================
 
 namespace App\Http\Controllers\Admin;
 
 use App\Http\Controllers\Controller;
 use App\Models\Mapel;
 use App\Models\Kelas;
+use App\Models\Mengajar;
 use Illuminate\Http\Request;
 
 class MapelController extends Controller
 {
+
     public function index(Request $request)
     {
-        $query = Mapel::query();
+        $query = Mapel::with('kelas');
 
         // SEARCH
-        if ($request->has('search')) {
+        if ($request->search) {
-            $search = $request->search;
+            $query->where(function ($q) use ($request) {
-            $query->where('nama_mapel', 'like', "%$search%")
+                $q->where('nama_mapel', 'like', "%$request->search%")
-                  ->orWhere('id_mapel', 'like', "%$search%");
+                  ->orWhere('id_mapel', 'like', "%$request->search%");
-        }
+            });
-
+        }
-        // FILTER BY KELAS (lewat table mengajars)
+
-        if ($request->has('filter_kelas') && $request->filter_kelas != '') {
+        // FILTER KELAS
-            $query->whereHas('mengajars', function($q) use ($request) {
+        if ($request->filter_kelas) {
-                $q->where('id_kelas', $request->filter_kelas);
+            $query->whereHas('kelas', function ($q) use ($request) {
+                $q->where('kelas.id_kelas', $request->filter_kelas);
             });
         }
 
-        // SHOW PER PAGE
         $perPage = $request->get('perPage', 10);
 
         $mapels = $query->paginate($perPage)->appends($request->all());
 
-        // Ambil semua kelas untuk dropdown filter
+        $kelass = Kelas::orderBy('tingkat')
-        $kelass = Kelas::orderBy('tingkat')->orderBy('nama_kelas')->get();
+            ->orderBy('nama_kelas')
+            ->get();
 
         return view('admin.mapel.index', compact('mapels', 'kelass'));
     }
 
+
+
     public function store(Request $request)
-{
-    $validated = $request->validate([
-        'nama_mapel' => 'required|string|max:100',
-        'kelas' => 'nullable|array'
-    ]);
-
-    $mapel = Mapel::create([
-        'nama_mapel' => $validated['nama_mapel'],
-    ]);
-
-    if($request->kelas){
-        foreach($request->kelas as $kelas){
-            $mapel->mengajars()->create([
-                'id_kelas' => $kelas
-            ]);
-        }
-    }
-
-    return redirect()->route('admin.mapel.index')
-        ->with('success','Data mata pelajaran berhasil ditambahkan!');
-}
-
-
-    public function update(Request $request, $id_mapel)
-{
-    $mapel = Mapel::findOrFail($id_mapel);
-
-    $validated = $request->validate([
-        'nama_mapel' => 'required|string|max:100',
-        'kelas' => 'nullable|array'
-    ]);
-
-    $mapel->update([
-        'nama_mapel' => $validated['nama_mapel']
-    ]);
-
-    // hapus relasi lama
-    $mapel->mengajars()->delete();
-
-    // buat relasi baru
-    if($request->kelas){
-        foreach($request->kelas as $kelas){
-            $mapel->mengajars()->create([
-                'id_kelas' => $kelas
-            ]);
-        }
-    }
-
-    return redirect()->route('admin.mapel.index')
-        ->with('success','Data mata pelajaran berhasil diupdate!');
-}
-
-    public function destroy($id_mapel)
     {
-        $mapel = Mapel::findOrFail($id_mapel);
+
+        $request->validate([
+            'nama_mapel' => 'required|max:100',
+            'kelas' => 'required|array'
+        ]);
+
+        $mapel = Mapel::create([
+            'nama_mapel' => $request->nama_mapel
+        ]);
+
+        foreach ($request->kelas as $kelas) {
+
+            Mengajar::create([
+                'id_mapel' => $mapel->id_mapel,
+                'id_kelas' => $kelas,
+                'id_guru' => null
+            ]);
+        }
+
+        return redirect()->route('admin.mapel.index')
+            ->with('success', 'Data mata pelajaran berhasil ditambahkan!');
+    }
+
+
+
+    public function update(Request $request, $id)
+    {
+
+        $request->validate([
+            'nama_mapel' => 'required|max:100',
+            'kelas' => 'required|array'
+        ]);
+
+        $mapel = Mapel::findOrFail($id);
+
+        $mapel->update([
+            'nama_mapel' => $request->nama_mapel
+        ]);
+
+        // hapus relasi lama
+        Mengajar::where('id_mapel', $mapel->id_mapel)->delete();
+
+        // simpan relasi baru
+        foreach ($request->kelas as $kelas) {
+
+            Mengajar::create([
+                'id_mapel' => $mapel->id_mapel,
+                'id_kelas' => $kelas,
+                'id_guru' => null
+            ]);
+        }
+
+        return redirect()->route('admin.mapel.index')
+            ->with('success', 'Data mata pelajaran berhasil diupdate!');
+    }
+
+
+
+    public function destroy($id)
+    {
+
+        $mapel = Mapel::findOrFail($id);
+
+        Mengajar::where('id_mapel', $id)->delete();
+
         $mapel->delete();
 
         return redirect()->route('admin.mapel.index')

app/Models/Kelas.php

@@ -31,4 +31,15 @@ public function mengajars()
     {
         return $this->hasMany(Mengajar::class, 'id_kelas', 'id_kelas');
     }
+
+    public function mapels()
+    {
+    return $this->belongsToMany(
+        Mapel::class,
+        'mengajars',
+        'id_kelas',
+        'id_mapel'
+    );
+    }
+
 }

database/migrations/2026_03_07_031902_fix_mengajar_refactor.php

@@ -0,0 +1,62 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        // 1. Matikan FK sementara
+        DB::statement('SET FOREIGN_KEY_CHECKS=0;');
+
+        // 2. Hapus FK lama jika ada
+        try {
+            DB::statement('ALTER TABLE mengajars DROP FOREIGN KEY mengajars_id_mapel_foreign');
+        } catch (\Exception $e) {}
+
+        try {
+            DB::statement('ALTER TABLE mengajars DROP FOREIGN KEY mengajars_id_kelas_foreign');
+        } catch (\Exception $e) {}
+
+        try {
+            DB::statement('ALTER TABLE mengajars DROP FOREIGN KEY mengajars_id_guru_new_foreign');
+        } catch (\Exception $e) {}
+
+        // 3. Ubah tipe kolom
+        DB::statement('ALTER TABLE mengajars MODIFY id_mapel BIGINT UNSIGNED');
+        DB::statement('ALTER TABLE mengajars MODIFY id_kelas BIGINT UNSIGNED');
+        DB::statement('ALTER TABLE mengajars MODIFY id_guru BIGINT UNSIGNED');
+
+        // 4. Tambahkan FK baru
+        DB::statement('
+            ALTER TABLE mengajars
+            ADD CONSTRAINT fk_mengajar_mapel
+            FOREIGN KEY (id_mapel) REFERENCES mapels(id_mapel)
+            ON DELETE CASCADE
+        ');
+
+        DB::statement('
+            ALTER TABLE mengajars
+            ADD CONSTRAINT fk_mengajar_kelas
+            FOREIGN KEY (id_kelas) REFERENCES kelas(id_kelas)
+            ON DELETE CASCADE
+        ');
+
+        DB::statement('
+            ALTER TABLE mengajars
+            ADD CONSTRAINT fk_mengajar_guru
+            FOREIGN KEY (id_guru) REFERENCES gurus(id_guru)
+            ON DELETE CASCADE
+        ');
+
+        // 5. Hidupkan lagi FK
+        DB::statement('SET FOREIGN_KEY_CHECKS=1;');
+    }
+
+    public function down(): void
+    {
+        //
+    }
+};

resources/views/admin/mapel/index.blade.php

@@ -158,6 +158,7 @@
                 <th>No</th>
                 <th>ID Mapel</th>
                 <th>Nama Mata Pelajaran</th>
+                <th>Kelas</th>
                 <th>Aksi</th>
             </tr>
         </thead>
@@ -169,10 +170,24 @@
                 <td>{{ $mapel->id_mapel }}</td>
                 <td>{{ $mapel->nama_mapel }}</td>
 
+                <td>
+                @if($mapel->kelas->count())
+                    @foreach($mapel->kelas as $kelas)
+                        <span class="badge bg-info">
+                            {{ $kelas->tingkat }} {{ $kelas->nama_kelas }}
+                        </span>
+                    @endforeach
+                @else
+                    <span class="text-muted">Belum ada kelas</span>
+                @endif
+            </td>
+
+
                 <td>
                     <button onclick="openEditModal(
-                        '{{ $mapel->id_mapel }}', 
+                    '{{ $mapel->id_mapel }}',
-                        '{{ $mapel->nama_mapel }}'
+                    '{{ $mapel->nama_mapel }}',
+                    {{ $mapel->kelas->pluck('id_kelas') }}
                     )" style="border:none;background:none">
                         <img src="{{ asset('images/icon/main/edit.png') }}" class="action-icon">
                     </button>
@@ -231,17 +246,22 @@
         </div>
 
         <div class="mb-3">
-        <label>Kelas</label>
+            <label>Pilih Kelas</label>
+
+            <select name="kelas[]" class="form-control" multiple required>
 
-            <select name="kelas[]" class="form-select" multiple>
             @foreach($kelass as $kelas)
+
             <option value="{{ $kelas->id_kelas }}">
-            {{ $kelas->tingkat }} - {{ $kelas->nama_kelas }}
+            {{ $kelas->tingkat }} {{ $kelas->nama_kelas }}
             </option>
+
             @endforeach
+
             </select>
 
-            <small class="text-muted">Bisa pilih lebih dari satu kelas</small>
+            <small class="text-muted">Tekan CTRL untuk memilih lebih dari satu kelas</small>
+
         </div>
 
 
@@ -288,6 +308,25 @@
 
         </div>
 
+        <div class="mb-3">
+
+            <label>Pilih Kelas</label>
+
+            <select name="kelas[]" id="editKelas" class="form-control" multiple required>
+
+            @foreach($kelass as $kelas)
+
+            <option value="{{ $kelas->id_kelas }}">
+            {{ $kelas->tingkat }} {{ $kelas->nama_kelas }}
+            </option>
+
+            @endforeach
+
+            </select>
+
+        </div>
+
+
         <div class="modal-footer">
           <button type="button" class="btn btn-secondary" data-bs-dismiss="modal">Batal</button>
           <button class="btn btn-success">Update</button>
@@ -300,14 +339,20 @@
 </div>
 
 <script>
-function openEditModal(idMapel, namaMapel) {
+    function openEditModal(idMapel, namaMapel, kelasMapel)
+    {
+
     document.getElementById('editIdMapel').value = idMapel;
     document.getElementById('editNamaMapel').value = namaMapel;
+    document.getElementById('formEdit').action =
 
-    document.getElementById('formEdit').action = "{{ url('admin/mapel') }}/" + idMapel;
+    "{{ url('admin/mapel') }}/" + idMapel;
-
+    let select = document.getElementById('editKelas');
+    for (let option of select.options) {
+    option.selected = kelasMapel.includes(parseInt(option.value));
+    }
     new bootstrap.Modal(document.getElementById('modalEdit')).show();
-}
+    }
 </script>
 
 @if ($errors->any())