Listing deals
<% for deal in @deals %> <% end %>
<%= h deal.deal_infos.first.headline %>
<%= link_to 'Show', deal %>
<%= link_to 'Edit', edit_deal_path(deal) %>
<%= link_to 'Destroy', deal, :confirm => 'Are you sure?', :method => :delete %>
<%= link_to 'New deal', new_deal_path %>