Going Back

<br /># cart_items_controller.rb<br />def create<br /> current_cart.cart_items.create!(params[:cart_item])<br /> flash[:notice] = "Product added to cart"<br /> redirect_to :back<br />end<br /><br /># or<br /><br />def create<br /> current_cart.cart_items.create!(params[:cart_item])<br /> flash[:notice] = "Product added to cart"<br /> session[:last_product_page] = request.env['HTTP_REFERER'] || products_url<br /> redirect_to current_cart_url<br />end<br /><br /><br /><!-- carts/show.html.erb --><br /><% if session[:last_product_page] %><br /> <%= link_to "Continue Shopping", session[:last_product_page] %> |<br /><% end %><br />

redirect_to :back And REFERER

http://blog.hendrikvolkmer.de/2007/3/8/http-referer-and-redirect_to-back