app/views/batches/_printable.html.erb
<tr>
<td class='item' width='20px'><input type='checkbox' checked='on' name='printable[<%= printable.id %>]'></td>
<td class='item'><%= printable.name %></td>
<% if printable.tracking_ident%>
<td class='item'><%= printable.tracking_ident %></td>
<% else %>
<td class='item'><%= printable.id %></td>
<% end %>
</tr>