class ActiveAdmin::BaseController

It implements ActiveAdmin controllers core features.
BaseController for ActiveAdmin.

def active_admin_config 

def active_admin_config
  self.class.active_admin_config
end

def active_admin_namespace 

def active_admin_namespace
  active_admin_config.namespace
end

def active_admin_root 

def active_admin_root
  controller, action = active_admin_namespace.root_to.split "#"
  { controller: controller, action: action }
end

def authenticate_active_admin_user

Calls the authentication method as defined in ActiveAdmin.authentication_method 
def authenticate_active_admin_user
  send(active_admin_namespace.authentication_method) if active_admin_namespace.authentication_method
end

def build_download_formats(download_links) 

def build_download_formats(download_links)
  download_links = instance_exec(&download_links) if download_links.is_a?(Proc)
  if download_links.is_a?(Array) && !download_links.empty?
    download_links
  elsif download_links == false
    []
  else
    DEFAULT_DOWNLOAD_FORMATS
  end
end

def current_active_admin_user 

def current_active_admin_user
  send(active_admin_namespace.current_user_method) if active_admin_namespace.current_user_method
end

def current_active_admin_user? 

def current_active_admin_user?
  !!current_active_admin_user
end

def default_page_presenter 

def default_page_presenter
  PagePresenter.new
end

def default_page_title 

def default_page_title
  active_admin_config.name
end

def only_render_implemented_actions

to check if they are implemented.
Admin allows you to not render any of the actions by using the #actions method, we need
By default Rails will render un-implemented actions when the view exists. Because Active 
def only_render_implemented_actions
  raise AbstractController::ActionNotFound unless action_methods.include?(params[:action])
end

def page_presenter 

def page_presenter
  active_admin_config.get_page_presenter(params[:action].to_sym) || default_page_presenter
end

def page_title 

def page_title
  if page_presenter[:title]
    helpers.render_or_call_method_or_proc_on(self, page_presenter[:title])
  else
    default_page_title
  end
end