# File lib/devise/controllers/helpers.rb, line 112 def sign_in(resource_or_scope, *args) options = args.extract_options! scope = Devise::Mapping.find_scope!(resource_or_scope) resource = args.last || resource_or_scope expire_session_data_after_sign_in! if options[:bypass] warden.session_serializer.store(resource, scope) elsif warden.user(scope) == resource && !options.delete(:force) # Do nothing. User already signed in and we are not forcing it. true else warden.set_user(resource, options.merge!(:scope => scope)) end end