sorting a ListField in mongoengine

Question

I have a model in mongoengine defined like this:

class Task(Document):

    name = StringField(required=True, unique=True)
    frequency = IntField(required=True)
    quantity = IntField()
    units = StringField()
    events = ListField(DateTimeField(default=datetime.datetime.now))

How can I get the latest event? I've tried the following to no success:

def latest(self):
    return self.events.sort()[-1]

Instead of returning the events sorted sort returns None

You could just use the Mongoengine SortedListField instead of ListField, [here is the doc](http://docs.mongoengine.org/apireference.html#mongoengine.fields.SortedListField) Then you could simply `return self.events` or its reverse if you wish as well — Sreenadh T C, Sep 16 '17 at 18:16
@SreenadhTC this sounds like a good solution. If you want to write it as an answer I will accept it. — stoebelj, Sep 16 '17 at 21:27

score 2 · Accepted Answer · answered Sep 17 '17 at 04:30

2

You could just use the Mongoengine SortedListField instead of ListField, here is the doc

Then you could simply return self.events or its reverse if you wish as well

answered Sep 17 '17 at 04:30

Sreenadh T C

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sorting a ListField in mongoengine

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