Started GET "/workroom/food_orders/2011-02-12/detail" for 78.91.11.197 at Thu Fe                                                                                        b 10 11:40:23 +0100 2011
  Processing by FoodOrdersController#detail as HTML
  Parameters: {"id"=>"2011-02-12", "tab"=>"workroom"}
Rendered food_orders/detail.html.erb within layouts/application (38.6ms)
Completed   in 559ms

ActionView::Template::Error (Couldn't find Group without an ID):
    11:     <tbody>
    12:       <% meal.food_orders.where(:date => @date).group(:group_id).size.ea                                                                                        ch do |group_id, number| %>
    13:         <tr>
    14:           <td><%= Group.find(group_id).name_en %></td>
    15:           <td><%= number %></td>
    16:         </tr>
    17:       <% end %>