Do you need help on the registration form, or are you looking to redirect users after they sign up?

[Solved] How to hook into Commerce after payment complete - Drupal

Use this to add custom fields or validation logic (e.g., matching a secondary database). 💻 Code Example: hook_user_presave

use Drupal\user\UserInterface; /** * Implements hook_ENTITY_TYPE_presave() for user entities. */ function my_module_user_presave(UserInterface $user) { // Check if this is a new user registration if ($user->isNew()) { // Perform custom logic, e.g., set a field value $user->set('field_welcome_status', 'Pending'); } } Use code with caution. Copied to clipboard 🎯 Key Considerations

To hook into the user registration process in Drupal 8 (and 9/10+), you typically use entity hooks since users are treated as content entities. 🛠️ Recommended Hooks

For cleaner, decoupled code, consider Symfony Event Subscribers if you are using the Hook Event Dispatcher module.

Use this for actions that require the new User ID, like sending a custom welcome email or creating related profile entries. Modifies the registration form .

Best for modifying data (e.g., adding a default role) before it hits the database. Runs after the user is created.