How to search document by oid in mongoengine

问题

I need get documents from db by oid, like:

Docs.objects(_id='4f4381f4e779897a2c000009')

But how to do it, if _id requires ObjectId object and even I try to set ObjectId from pymongo it doesn't work.

Docs.objects(_id=pymongo.objectid.ObjectId('4f4381f4e779897a2c000009'))

return empty list

回答1:

How about just using the raw string:

Docs.objects.get(id='4f4381f4e779897a2c000009')

That is probably the easiest way ... right ?

回答2:

This should work:

Docs.objects(pk='4f4381f4e779897a2c000009')

回答3:

Came to this question because I had a lot of trouble with this myself. It seems like PyMongo changed this and objectid is no longer inside pymongo and is now instead:

import bson
Doc.objects.get(id=bson.objectid.ObjectId('4f4381f4e779897a2c000009'))

Also, Mongoengine uses the name 'id' for the ObjectID field.

来源：https://stackoverflow.com/questions/9988352/how-to-search-document-by-oid-in-mongoengine