<table>
<tr>
+ <th>Customer ID</th>
<% for column in Customer.content_columns %>
<th><%= column.human_name %></th>
<% end %>
<% for customer in @customers %>
<tr>
+ <td><%=h customer.id %></td>
<% for column in Customer.content_columns %>
<td><%=h customer.send(column.name) %></td>
<% end %>