opgroups and sorted lables for group_bys (again)

git-svn-id: https://dev.finn.de/svn/cockpit/branches/reporting_merge@1792 7926756e-e54e-46e6-9721-ed318f58905e

app/views/cost_reports/_group_by.rhtml

@@ -4,13 +4,19 @@
     query   A CostQuery object
 %>
 
+<% grouped_gbs = CostQuery::GroupBy.all_grouped %>
+
 <div id="group_by_area">
   <%= l(:label_columns) %>:
   <div id="group_columns" class="drag_target drag_container">
     <select id="group_by_columns" name="groups[columns][]" class="select-small" onchange="add_group_by(this);">
       <option value=""></option>
-      <% CostQuery::GroupBy.all.each do |group_by| %>
-        <option value="<%= group_by.underscore_name %>"><%= l(group_by.label)%></option>
+      <% grouped_gbs.each do |label , group_by_ary| %>
+        <optgroup label="<%= l(label) %>">
+          <% group_by_ary.select(&:display?).sort_by {|gb| l(gb.label)}.each do |group_by| %>
+          <option value="<%= group_by.underscore_name %>"><%= l(group_by.label)%></option>
+          <% end %>
+        </optgroup>
       <% end %>
     </select>
   </div>
@@ -18,8 +24,12 @@
   <div id="group_rows" class="drag_target drag_container">
     <select id="group_by_rows" name="groups[rows][]" class="select-small" onchange="add_group_by(this);">
       <option value=""></option>
-      <% CostQuery::GroupBy.all.each do |group_by| %>
-        <option value="<%= group_by.underscore_name %>"><%= l(group_by.label)%></option>
+      <% grouped_gbs.each do |label , group_by_ary| %>
+        <optgroup label="<%= l(label) %>">
+          <% group_by_ary.select(&:display?).sort_by {|gb| l(gb.label)}.each do |group_by| %>
+          <option value="<%= group_by.underscore_name %>"><%= l(group_by.label)%></option>
+          <% end %>
+        </optgroup>
       <% end %>
     </select>
   </div>