Detailing fungsi semua modul dari bugs error

app/Models/Exam.php

@@ -2,20 +2,28 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
-use Illuminate\Database\Eloquent\Relations\HasMany;
 
 class Exam extends Model
 {
+    use HasFactory;
+
     protected $fillable = [
-        'old_id', 
         'title', 
-        'duration', 
-        'passing_percentage'
+        'description', 
+        'training_type', 
+        'subject_id', 
+        'duration_minutes', 
+        'passing_grade', 
+        'max_retakes', 
+        'is_random_order', 
+        'is_active'
     ];
 
-    public function results(): HasMany
+    // Relasi: Setiap Ujian pasti milik satu Materi (Subject)
+    public function subject()
     {
-        return $this->hasMany(ExamResult::class);
+        return $this->belongsTo(Subject::class);
     }
 }

app/Models/QuestionBank.php

@@ -10,25 +10,10 @@ class QuestionBank extends Model
     protected $table = 'question_banks';
 
     protected $fillable = [
-        // Atribut Soal dari desain Anda
-        'old_id', 
-        'subject_id',
-        'question_type', 
-        'question_level', 
-        'passing_grade', 
-        'duration',
-        'question_text', 
-        'option_a', 
-        'option_b', 
-        'option_c', 
-        'option_d', 
-        'option_e', 
-        'correct_answer',
-        
-        // PENTING: Atribut Relasi yang dibutuhkan form Create/Edit & Filter Index
-        'department_id',
-        'position_id',
-        'training_matrix_id',
+        'subject_id', 'department_id', 'position_id', 'question_type', 
+        'question_level', 'question_text', 'option_a', 'option_b', 
+        'option_c', 'option_d', 'option_e', 'correct_answer', 
+        'essay_keywords', 'score_weight', 'passing_grade', 'duration', 
         'created_by'
     ];
 

app/Models/Subject.php

@@ -19,4 +19,12 @@ class Subject extends Model
     {
         return $this->hasMany(QuestionBank::class, 'subject_id');
     }
+
+    public function users() // atau employees()
+{
+    // Paksa pencarian menggunakan 'user_id'
+    return $this->belongsToMany(User::class, 'employee_subject', 'subject_id', 'user_id')
+                ->withPivot('status')
+                ->withTimestamps();
+}
 }

app/Models/User.php

@@ -73,10 +73,18 @@ class User extends Authenticatable
         return $this->belongsTo(Position::class, 'position_id');
     }
 
+    public function subjects()
+    {
+        // Parameter ke-3 'user_id' akan memaksa Laravel mengabaikan pencarian 'employee_id'
+        return $this->belongsToMany(\App\Models\Subject::class, 'employee_subject', 'user_id', 'subject_id')
+                    ->withPivot('status')
+                    ->withTimestamps();
+    }
+
     public function trainings()
     {
-        // Ubah 'user_id' menjadi 'employee_id' agar sesuai dengan database Anda saat ini
-        return $this->belongsToMany(Subject::class, 'employee_subject', 'employee_id', 'subject_id')
+        // Karena ini Model User, foreign key-nya harus 'user_id'
+        return $this->belongsToMany(Subject::class, 'employee_subject', 'user_id', 'subject_id')
                     ->withPivot('status')
                     ->withTimestamps();
     }