app/controllers/application_controller.rb
class ApplicationController < ActionController::Base
protect_from_forgery with: :exception
helper_method :current_user
def current_user
@current_user ||= User.find_by_uid(session[:user_id]) if session[:user_id]
@is_admin = Admin.is_admin?(@current_user)
return @current_user
end
helper_method :current_user
end