laravel, how to set default value in Validator at post registeration
Stefan Izdrail
Founder & Senior Architect · 2026-06-29
Title: Setting Default Values in Laravel Validator During Registration Process Without Using Hidden Inputs or Database
Introduction
In Laravel applications, it is common to validate user input during registration using the Laravel Validator class. While it's possible to set default values for fields like country and region within the registration form itself, this can lead to extra workload on rendering pages and handling multiple hidden inputs. However, using a more efficient approach, we can achieve our goal in the context of Laravel's lifecycle by setting these default values during the registration function itself.
Steps for Setting Default Values During Registration Without Hidden Inputs or Database
1. Create Custom Validator: Develop a custom validator that handles the validation and sets the default values for region_id and country_id fields. This will ensure consistent and well-organized code, making it easier to maintain in the future.
2. Set Up the Model and Migration: In your Laravel application, set up an appropriate model and migration file for storing users' information, including the country and region.
3. Use Appropriate Data Types: For both country_id and region_id attributes, use integer data types as they are more suitable for referring to unique values such as country codes or region identifiers in databases.
4. Define Default Values: Define default values for the country_id and region_id fields within their respective database tables. These defaults should represent appropriate initial values that work well with most users or can be easily changed later on if needed.
5. Implement the PostAdminRegistration Function: In your application, create a postAdminRegistration function to handle user registration requests. This function will include validation and data processing logic for creating a new User instance from validated input data. Here's an example implementation:
protected function postAdminRegistration(Request $request)
{
/** @var User $user */
$validatedData = $request->validate([
'fname' => 'required|string|max:255',
'lname' => 'required|string|max:255',
'country_id'=>'required|integer|min:1',//here default value ex:2
'region_id'=>'required|integer|min:1',//here default value ex:1
'email' => 'required|string|email|max:255|unique:users',
'password' => 'required|string|min:6|confirmed',
]);
try {
$validatedData['password']= bcrypt(array_get($validatedData, 'password'));
$validatedData['activation_code'] = str_random(30).time();
$user=app(User::class)->create($validatedData);
} catch (\Exception $exception) {
logger()->error($exception);
return redirect()->back()->with('message', 'Unable to create new user.');
}
$user->notify(new UserRegisteredSuccessfully($user));
return Redirect::to("users/login_form")->withSuccess('Successfully created a new account. Please check your email and activate your account.');