<%= link_to h(product.title), {:action => "add_to_cart", :id => product}, :method => "post" %>
<%= product.description %>
<%= number_to_currency product.price, :unit => "£" %>
<% form_remote_tag :url => {:action => 'add_to_cart', :id => product} do %>
<%= submit_tag "Add to cart" %>
<% end %>