polymorphic_url for index

Perhaps I should be more specific:

I'm using STI (single table inheritance) and I'm displaying the objects
using the same view. I need to put a link to the index. polymorphic_url
helped me so far, because it generates the new, create, update and edit
URLs depending on the object type, but there seems to be no easy way to
generate the index URL.

Gabi Ge wrote:


polymorphic_url([@parent, ChildClass.new])

If the array contains an item which is new (not saved), then it uses
the plural form of path (index).