app/controllers/application_controller.rb
# Prevent CSRF attacks by raising an exception.
# For APIs, you may want to use :null_session instead.
Prevent CSRF attacks by raising an exception.
For APIs, you may want to use :null_session instead.
Prevent CSRF attacks by raising an exception . For APIs you may want to use : null_session instead .
def authenticate_user
    if current_user.nil?
      flash[:error] = 'You must be signed in to view that page.'
      redirect_to :root
    end
  end
def authenticate_user if current_user . nil? flash [ :error ] = 'You must be signed in to view that page.' redirect_to :root end end
Prevent CSRF attacks by raising an exception.
Prevent CSRF attacks by raising an exception .