Dynamic Table

table.html.erb

<table id="roles">
    <thead>
      <tr>
        <% @columns.each do |column| %>
          <th class="center"><%= column %></th>
        <% end %>
      </tr>
    </thead>
    <tbody>
      <% @Roles.each_with_index do |role, index| %>
        <% if index%2 == 0 %>
          <tr>                     
        <%else%>
          <tr class="odd">
        <% end %>
        <% @columns.each do |column| %>
          <td><%= role.send column %></td>
        <% end %>
      </tr>
    <% end %>
  </tbody>
</table>