_id is given None after saving data into model Mongoengine

Question

i tried to save data into mongodb database using Mongoengine orm and flask, the problem is whene i save data then try to access data from saved object its given none

here is my view.py

s = Users(name="kaushik")
s.username = "kaushikmakwana"
data = s.save()
print(s) # output users object
print(data._id) #output None
print(data.id) #outeput None

here is my model.py

class Users(DynamicDocument):

    meta = {'collection' : 'user'}

    _id = StringField()
    name = StringField()
    username = StringField()
    def __repr__(self):
        return '<Users %r' % self.name

why its give None? how can i access this object data after saved?

You should get data in "s" object. "data" would contain the return value of s.save() operation, which seems None. So, print(s._id) would give you the right value. — Abhay PS, Apr 28 '17 at 13:03
thanks @abhay i tried your solution but its still give None. — Kaushik Makwana, Apr 28 '17 at 13:25

score 2 · Accepted Answer · answered Apr 28 '17 at 21:19

2

Delete _id from your model, this field is autogenerated from mongodb

answered Apr 28 '17 at 21:19

osmay88

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Thnks a lot osmay88 :) – Kaushik Makwana Apr 29 '17 at 04:32

_id is given None after saving data into model Mongoengine

1 Answers1