*/ public function rules(): array { return [ 'edarate_ostani_id' => [ 'integer', 'exists:edarate_ostani,id', Rule::prohibitedIf(fn () => filled($this->input('edarate_shahri_id'))), ], 'edarate_shahri_id' => [ 'integer', 'exists:edarate_shahri,id', Rule::prohibitedIf(fn () => filled($this->input('edarate_ostani_id'))), ], 'province_id' => 'required|exists:provinces,id', 'city_id' => 'exists:cities,id', 'username' => 'required|unique:users,username', 'national_code' => 'unique:users,national_code|digits:10', 'password' => 'required|confirmed|min:8', ]; } }