Update Doctor Resource

app/Models/Province.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Factories\HasFactory;
+use Illuminate\Database\Eloquent\Model;
+
+class Province extends Model
+{
+    use HasFactory;
+
+    protected $protected = [
+        'id',
+        'name'
+    ];
+
+    public function cities()
+    {
+        return $this->hasMany(City::class, 'province_id');
+    }
+}