How to make dynamic on focus popup in the grid.

If you have a data table and need to display a on focus popup which shows the related columns content then you can do the following:
<% @objects.each do |object| %>
           
                   <%=h object.name%>                 
                  Show
                   

                                              <%if object.regions.nil?%>                                                   <%else%>                                                                                                                                                                 <%end%>                         <% object.regions.each do |region| %>                                                       <%if region.state.nil?                               state_name = ""                             else                               state_name = region.state.state_description                             end%>                                                         <%if region.super_region.nil?                               super_region_name = ""                             else                               super_region_name = region.super_region.super_region_description                             end%>                                                         <%if region.region.nil?                               region_name = ""                             else                               region_name = region.region.region_description                             end%>                                                                               <%end%>                      

No regions selected
State	Super Region	Region
<%= state_name %>	<%= super_region_name %>	<%= region_name %>

                   

                       
           
<% end %>
<% end %>