This question is already asked on StackOverflow,
The asked questions date back to 2013, Its 2015 now and Django has grown up fast.
What is the situation of using mongodb with Django 1.8 as of 2015?
Does Django support Monogodb out of the box (with db adapters)? or another distribution like django-nonrel should be used?
just my thoughts and somewhat subjective and opinionated but I would say it does not work very well. I quickly disbanded the idea of trying to run Django with MongoDB, since it's auth system is heavily reliant upon a relational database to work.
There are apparently ways around this, but ultimately I decided for my project it was not worth the effort just to use MongoDB.