link_to タグでアクション指定

<% @shops.each do |shop| %>
  <tr>
    <td><font size="1"><%= shop.name %></font></td>
    <td><font size="1"><%= shop.address %></font></td>
     <td><%= link_to("確認",  :action => "show", :id => shop) %>
  </tr>
<% end %>