reconstruction of the project

app/Models/CompetitionClassWinner.php

@@ -2,11 +2,15 @@
 
 namespace App\Models;
 
-use Illuminate\Database\Eloquent\Model;
+use App\Models\BaseModel;
 
-class CompetitionClassWinner extends Model
+class CompetitionClassWinner extends BaseModel
 {
     protected $table = 'competition_class_winners';
+
+    // ✅ CI: useTimestamps = true (created_at/updated_at)
+    public $timestamps = true;
+
     protected $fillable = [
         'competition_id',
         'class_section_id',
@@ -21,5 +25,23 @@ class CompetitionClassWinner extends Model
         'prize_5',
         'prize_6',
     ];
-    public $timestamps = true;
+
+    protected $casts = [
+        'competition_id'    => 'integer',
+        'class_section_id'  => 'integer',
+        'question_count'    => 'integer',
+        // If winners_override is JSON in DB, cast to array:
+        'winners_override'  => 'array',
+    ];
+
+    /* Optional relationships */
+    public function competition()
+    {
+        return $this->belongsTo(Competition::class, 'competition_id');
+    }
+
+    public function classSection()
+    {
+        return $this->belongsTo(ClassSection::class, 'class_section_id');
+    }
 }