reconstruction of the project

app/Models/EventCharges.php

@@ -3,11 +3,15 @@
 namespace App\Models;
 
 use App\Models\BaseModel;
+use Illuminate\Support\Facades\DB;
 
 class EventCharges extends BaseModel
 {
     protected $table = 'event_charges';
-    protected $primaryKey = 'id';
+
+    // ✅ CI: useTimestamps = true (created_at/updated_at)
+    public $timestamps = true;
+
     protected $fillable = [
         'event_id',
         'parent_id',
@@ -20,29 +24,54 @@ class EventCharges extends BaseModel
         'created_at',
         'updated_at',
     ];
-    public $timestamps = true;
-    const CREATED_AT = 'created_at';
-    const UPDATED_AT = 'updated_at';
 
-    public function getChargesWithEventInfo($parentId = null, $schoolYear = null, $semester = null)
+    protected $casts = [
+        'event_id'       => 'integer',
+        'parent_id'      => 'integer',
+        'student_id'     => 'integer',
+        'participation'  => 'boolean', // change if stored as string/enum
+        'charged'        => 'boolean', // change if stored as string/enum
+        'updated_by'     => 'integer',
+    ];
+
+    /* Optional relationships */
+    public function event()
     {
-        $builder = $this->select('event_charges.*, events.event_name, events.amount')
-                        ->join('events', 'events.id = event_charges.event_id', 'left');
-
-        if ($parentId) {
-            $builder->where('event_charges.parent_id', $parentId);
-        }
-
-        if ($schoolYear) {
-            $builder->where('event_charges.school_year', $schoolYear);
-        }
-
-        if ($semester) {
-            $builder->where('event_charges.semester', $semester);
-        }
-
-        return $builder->findAll();
+        return $this->belongsTo(Event::class, 'event_id');
     }
 
+    public function parent()
+    {
+        return $this->belongsTo(User::class, 'parent_id');
+    }
 
+    public function student()
+    {
+        return $this->belongsTo(Student::class, 'student_id');
+    }
+
+    /**
+     * Equivalent of CI getChargesWithEventInfo()
+     * Returns rows with: event_charges.*, events.event_name, events.amount
+     */
+    public static function getChargesWithEventInfo(?int $parentId = null, ?string $schoolYear = null, ?string $semester = null): array
+    {
+        $q = DB::table('event_charges')
+            ->leftJoin('events', 'events.id', '=', 'event_charges.event_id')
+            ->select('event_charges.*', 'events.event_name', 'events.amount');
+
+        if (!empty($parentId)) {
+            $q->where('event_charges.parent_id', $parentId);
+        }
+
+        if (!empty($schoolYear)) {
+            $q->where('event_charges.school_year', $schoolYear);
+        }
+
+        if (!empty($semester)) {
+            $q->where('event_charges.semester', $semester);
+        }
+
+        return $q->get()->map(fn ($r) => (array) $r)->all();
+    }
 }