Mongoengine Document.update()示例

Question

假设Venue是:

from mongoengine import *
from mongoengine_extras.fields import  AutoSlugField
class Venue(Document):
    name = StringField(required=True)
    venue_slug = AutoSlugField()

我想根据名称更新所有的venue_slug字段.我尝试:

for v in Venue.objects():
    v(venue_slug = str(v.name)).update()

但我得到:

v(venue_slug = str(v.name)).update()
TypeError: Error when calling the metaclass bases
'Venue' object is not callable

我的更新功能是否正确？如果您不熟悉,AutoSlugField()可以为StringField()更新编写示例吗？

Answer 1

你的代码不正确.尝试:

for v in Venue.objects():
    v.update(set__venue_slug=str(v.name))

请参阅文档:http://docs.mongoengine.org/guide/querying.html#atomic-updates.