ApplicationController 클래스안의 protect_from_forgery 를 보아라...
http://guides.rubyonrails.org/security.html#cross-site-request-forgery-csrf
plain으로 작성하지 말고 form_for 을 쓰랜다...
http://www.noppanit.com/rails-lost-session-after-doing-a-post/
http://guides.rubyonrails.org/security.html#cross-site-request-forgery-csrf
plain으로 작성하지 말고 form_for 을 쓰랜다...
http://www.noppanit.com/rails-lost-session-after-doing-a-post/