Django MPTT ordering
I found a solution so I forgot to check back.
I played around with the mptt structure and django functions ...
Thanks
I'm using MPTT tree structure in my Django project to organise comments. I have only 2 level : comment and comment of comment
Everything works perfectly except the ordering.
I would like to sort all Comment that don't have parents by creation date ascendent ("-creation_date") and all comment that has a parent by creation date descendant ("creation_date"). 
Basically it's like the comments are working on the Facebook wall. (you alway see the latest comment on top but the comments within a comment are in a reverse order)
In my class Comment I have the following MPTTMeta : order_insertion_by=['creation_date']
I hope I'll get some help.
Thank you