Checkout: minimize registration data

app/Http/Requests/Checkout/CheckoutRegisterRequest.php

@@ -3,6 +3,7 @@
 namespace App\Http\Requests\Checkout;
 
 use Illuminate\Foundation\Http\FormRequest;
+use Illuminate\Validation\Rule;
 use Illuminate\Validation\Rules\Password;
 
 class CheckoutRegisterRequest extends FormRequest
@@ -23,13 +24,18 @@ class CheckoutRegisterRequest extends FormRequest
     public function rules(): array
     {
         return [
-            'email' => ['required', 'email', 'max:255', 'unique:users,email'],
-            'username' => ['required', 'string', 'max:255', 'unique:users,username'],
+            'email' => [
+                'required',
+                'email',
+                'max:255',
+                Rule::unique('users', 'email'),
+                Rule::unique('users', 'username'),
+            ],
             'password' => ['required', 'confirmed', Password::defaults()],
             'first_name' => ['required', 'string', 'max:255'],
             'last_name' => ['required', 'string', 'max:255'],
-            'address' => ['required', 'string', 'max:500'],
-            'phone' => ['required', 'string', 'max:255'],
+            'address' => ['nullable', 'string', 'max:500'],
+            'phone' => ['nullable', 'string', 'max:255'],
             'package_id' => ['required', 'exists:packages,id'],
             'terms' => ['required', 'accepted'],
             'privacy_consent' => ['required', 'accepted'],
@@ -44,7 +50,6 @@ class CheckoutRegisterRequest extends FormRequest
     {
         return [
             'email.unique' => 'Diese E-Mail-Adresse wird bereits verwendet.',
-            'username.unique' => 'Dieser Benutzername ist bereits vergeben.',
             'password.confirmed' => 'Die Passwortbestätigung stimmt nicht überein.',
             'package_id.exists' => 'Das ausgewählte Paket ist ungültig.',
             'terms.accepted' => 'Bitte akzeptiere die Nutzungsbedingungen.',