ruby on rails - How devise methods are available in ApplicationController

ruby on rails - How devise methods are available in ApplicationController.rb

Devise::Controller跟ApplicationController没有继承关系

ApplicationController inherits from ActionController::Base, which defines a number of helpful methods. ref Devise::Controller has a several modules that’s hooked up in to ActionController on_load. For example the Devise::Controller::Helpers module defines and loads helpers below:

#   Generated methods:
#     authenticate_user!  # Signs user in or redirect
#     authenticate_admin! # Signs admin in or redirect
#     user_signed_in?     # Checks whether there is a user signed in or not
#     admin_signed_in?    # Checks whether there is an admin signed in or not
#     current_user        # Current signed in user
#     current_admin       # Current signed in admin
#     user_session        # Session data available only to the user scope
#     admin_session       # Session data available only to the admin scope
#
#   Use:
#     before_action :authenticate_user!  # Tell devise to use :user map
#     before_action :authenticate_admin! # Tell devise to use :admin map