How do I update the RegisterRequest contract to include new fields

1. Create a new file called `RegisterRequest.php` in your `app/Contracts/Fortify` directory.

php
<?php

namespace App\Contracts\Fortify;

use Illuminate\Validation\Rules;

interface RegisterRequest
{
    /**
     * Determine the validation rules for the registration request.
     *
     * @return array
     */
    public function rules(): array;

    /**
     * Get the registration input.
     *
     * @return array
     */
    public function input(): array;

    /**
     * Get the custom field value.
     *
     * @return string|null
     */
    public function customField(): ?string;
}

2. Implement the `RegisterRequest` interface in your custom `RegisterRequest` class located in `app/Actions/Fortify/RegisterRequest.php`.

php
<?php

namespace App\Actions\Fortify;

use App\Contracts\Fortify\RegisterRequest as RegisterRequestContract;
use Illuminate\Validation\Rules;

class RegisterRequest implements RegisterRequestContract
{
    /**
     * Determine the validation rules for the registration request.
     *
     * @return array
     */
    public function rules(): array
    {
        return [
            'name' => ['required', 'string', 'max:255'],
            'email' => ['required', 'string', 'email', 'max:255', 'unique:users'],
            'password' => ['required', 'confirmed', Rules\Password::defaults()],
            'custom_field' => ['required', 'string', 'max:100'], // Add your custom field
        ];
    }

    /**
     * Get the registration input.
     *
     * @return array
     */
    public function input(): array
    {
        return request()->all();
    }

    /**
     * Get the custom field value.
     *
     * @return string|null
     */
    public function customField(): ?string
    {
        return request()->input('custom_field');
    }
}

3. Update the `CreateNewUser` class to use the new `RegisterRequest` contract.

php
<?php

namespace App\Actions\Fortify;

use App\Contracts\Fortify\RegisterRequest;
use App\Models\User;
use Illuminate\Support\Facades\Hash;
use Laravel\Fortify\Contracts\CreatesNewUsers;

class CreateNewUser implements CreatesNewUsers
{
    /**
     * Validate and create a newly registered user.
     *
     * @param  \App\Contracts\Fortify\RegisterRequest  $request
     * @return \App\Models\User
     */
    public function create(RegisterRequest $request)
    {
        $user = User::create([
            'name' => $request->input()['name'],
            'email' => $request->input()['email'],
            'password' => Hash::make($request->input()['password']),
            'custom_field' => $request->customField(), // Use the custom field
        ]);

        return $user;
    }
}

4. Register the custom `RegisterRequest` class in your `FortifyServiceProvider`.

php
<?php

namespace App\Providers;

use App\Actions\Fortify\CreateNewUser;
use App\Actions\Fortify\RegisterRequest;
use App\Contracts\Fortify\RegisterRequest as RegisterRequestContract;
use Illuminate\Support\ServiceProvider;
use Laravel\Fortify\Fortify;

class FortifyServiceProvider extends ServiceProvider
{
    /**
     * Bootstrap any application services.
     *
     * @return void
     */
    public function boot()
    {
        Fortify::createUsersUsing(CreateNewUser::class);
        Fortify::updateUserProfileInformationUsing(UpdateUserProfileInformation::class);
        Fortify::updateUserPasswordsUsing(UpdateUserPassword::class);
        Fortify::resetUserPasswordsUsing(ResetUserPassword::class);

        Fortify::registerView(function () {
            return view('auth.register');
        });

        $this->app->bind(RegisterRequestContract::class, RegisterRequest::class);
    }
}

By following these steps, you have created a custom `RegisterRequest` contract and implementation that includes your new custom field. The `CreateNewUser` class now uses the new `RegisterRequest` contract to access the custom field and create the user.