How to sort data queried from mongo? help needed

[zhangyuz]

I am new to graphenee-mongo and working on a weekend project based on flask + graphene-mongo + flask-graphql. I need to sort the data queried from mongo, but I greped through the code , could not find any sorting api, can any one help?

here is my projuect, I need to sort index daily item by trade_date desc.

[zhangyuz]

make a small change in the source code, I works for me now.
you can find it here:
#141