module Devise::Controllers::Helpers

method in your application controller to use your own parameter sanitizer.
lib/devise/parameter_sanitizer.rb for more info. Override this
Set up a param sanitizer to filter parameters using strong_parameters. See

def devise_parameter_sanitizer
  @devise_parameter_sanitizer ||= Devise::ParameterSanitizer.new(resource_class, resource_name, params)
end