```ruby
class ApplicationController < ActionController::API
  include DeviseTokenAuth::Concerns::SetUserByToken
  include Pundit
end
```

Allow save the user name on sign up and update account
user
```ruby
class ApplicationController < ActionController::API
  include DeviseTokenAuth::Concerns::SetUserByToken
  include Pundit

  before_action :configure_permitted_parameters, if: :devise_controller?

  protected

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: [:name])
    devise_parameter_sanitizer.permit(:account_update, keys: [:name])
  end
end
```
assistant