rails redirect

rails_error_counting_redirect.rb

#railsでsaveをするときにerrorをcountingしてredirectする。
def save
  order = Order.new(params[:order]) if order.save
  redirect_to action: "display" else
  session[:error_count] ||= 0 session[:error_count] += 1 if session[:error_count] < 4
  self.notice = "Please try again" else
             # Give up -- user is clearly struggling
  redirect_to("/help/order_entry.html") end
end end

redirect_to_referer_back.rb

# Redirect to referer
def save_details
  unless params[:are_you_sure] == 'Y'
    redirect_to(:back)
  else
  ...
  end 
end

# Redirect permanently
headers["Status"] = "301 Moved Permanently" 
redirect_to("http://my.new.home")