git add .

git commit "Implement user registration"

app/Http/Requests/RegisterRequest.php

@@ -4,6 +4,7 @@ namespace App\Http\Requests;
 
 use Illuminate\Contracts\Validation\ValidationRule;
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 
 class RegisterRequest extends FormRequest
 {
@@ -39,7 +40,8 @@ class RegisterRequest extends FormRequest
 
             'national_code' => [
                 'required',
-                'unique:users,national_code'
+                'unique:users,national_code',
+                'ir_national_id'
             ],
 
             'gender' => [
@@ -59,14 +61,13 @@ class RegisterRequest extends FormRequest
             'mobile' => [
                 'required',
                 'unique:users,mobile',
-                'ir_mobile:zero_code'
+                'ir_mobile'
             ],
 
             'email' => [
                 'required',
                 'email',
                 'unique:users,email',
-                'ir_national_id'
             ],
 
             'username' => [
@@ -81,13 +82,14 @@ class RegisterRequest extends FormRequest
             ],
 
             'province_id' => [
-                'required',
+                'nullable',
                 'exists:provinces,id',
             ],
 
             'city_id' => [
-                'required',
-                'exists:cities,id',
+                'nullable',
+                Rule::exists('cities', 'id')
+                    ->where(fn ($query) => $query->where('province_id', $this->province_id)),
             ],