Add extra depth to input field in form_for

Hey all,

I’m making a table form in rails who roughly looks like this:

(form_for :info,…)
Header1
Item 1 yes/no comment
Item 2 yes/no comment

Header2
Item 1 yes/no comment
Item 2 yes/no comment

What i would like to do is that the name of the combobox (yes/no) would
be info[header1][item1][yesno] and the comment
info[header1][item1][comment]

For item 2 this would have to be info[header1][item2][yesno] and so on.

Any suggestions about the best approach for this?

Thanks!