flask-mongoengine

Flask-MongoEngine & PyMongo Aggregation Query

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I am trying to make an aggregation query using flask-mongoengine, and from what I have read it does not sound like it is possible. I have looked over several forum threads, e-mail chains and a few questions on Stack Overflow, but I have not found a really good example of how to implement aggregation with flask-mongoengine. There is a comment in this question that says you have to use "raw pymongo and aggregation functionality." However, there is no examples of how that might work. I have tinkered with Python and have a basic application up using Flask framework, but delving into full fledged

Mongoengine: TypeError: init() got an unexpected keyword argument

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问题 I am using flask-mongoengine extension and I have a User class like this: class User(db.Document, UserMixin): email = db.StringField(max_length=120, required=True, unique=True) password_hash = db.StringField(max_length=80, required=True) active = db.BooleanField() fb_id = db.StringField(max_length=120, required=False) def __init__(self, email, password, fb_id=None, active=True): hashp = md5.md5(password).hexdigest() self.email=email self.password_hash=hashp self.fb_id=fb_id self.active=active