link_to_remote :with => model.object.col

Hi, how would I pass a model field/column as a param:

<% for post in @posts %>
<%= link_to_remote "New Requirement", :url => { :action => :new_req },
:with=>"'description=' + post.title " %></td>
<% end %>

Namely, :with=>"'description=' + post.title ".

I want params[:description] = post.title

How do I do this?

Thanks