How can I create custom controllers for Devise in Rails?

How can I create custom controllers for Devise in Rails?

To create custom controllers for Devise in Rails, you can generate a new controller that inherits from the Devise controllers. For example, you can run rails generate devise:controllers users to create controllers for the User model.

What if I want to customize the sign-in process?

You can override the SessionsController by creating a custom controller that inherits from Devise::SessionsController. Then, you can modify the create and destroy actions to customize the sign-in and sign-out processes.

Can I add additional parameters during sign-up?

Yes, you can permit additional parameters by using the before_action callback in your custom RegistrationsController. Use devise_parameter_sanitizer.permit(:sign_up, keys: [:name, :age]) to add custom fields.

How do I handle user authentication errors?

You can handle authentication errors by overriding the create method in your custom controller and using flash[:alert] to display error messages to the user.