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Asynchronous MongoDB ORM for Tornado

Project description

Monguo is a full-featured, asynchronous MongoDB ORM with Motor dirver for Tornado applications.


Lime YH.Shi


Monguo is an asynchronous MongoDB ORM based on driver Motor. The source is on GitHub and the docs are on ReadTheDocs.


$ pip install git+
$ pip install monguo


Monguo works in all the environments officially supported by Tornado and Motor. It requires:

  • Unix, including Mac OS X. Microsoft Windows is not officially supported.

  • Tornado 3.0+

  • Motor 0.2+


class UserDocument(Document):
    name  = StringField(required=True, unique=True, max_length=20)
    email = EmailField(required=True)
    age   = IntegerField()
    sex   = StringField(required=True, default='male',
                                       candidate=['male', 'female'])
    meta = {
        'collection': 'user'

    def get_user_list(skip=10, limit=5):
        result = yield UserDocument.find().to_list(limit)
        raise gen.Return(result)

class CommentDocument(EmbeddedDocument):
    commentor = ReferenceField(UserDocument, required=True)
    contents  = StringField(required=True, max_length=200)

class PostDocument(Document):
    author       = ReferenceField(UserDocument, required=True)
    publish_time = DateTimeField(required=True)
    title        = StringField(required=True, max_length=100)
    contents     = StringField(max_length=5000)
    comments     = ListField(EmbeddedDocumentField(CommentDocument))

    meta = {
        'collection': 'post'

# connect to database

# insert
bob_id = yield UserDocument.insert({
    'name': 'Bob',
    'email': '',
    'age': 19

alice_id = yield UserDocument.insert({
    'name': 'Alice',
    'email': '',
    'sex': 'female',
    'age': 18

post_id = yield PostDocument.insert({
    'author': DBRef(UserDocument.meta['collection'], bob_id),
    'title': 'title',

# update
comment = {
    'commentor': DBRef(UserDocument.meta['collection'], alice_id),
    'contents': 'I am comments.'
yield PostDocument.update({'_id': post_id},
                          {'$push': {'comments': comment}})

# query
user = yield UserDocument.find_one({'name': 'Bob'})
posts = yield PostDocument.find().to_list(5)

# higher API
user_list = yield UserDocument.get_user_list()


You will need sphinx installed to generate the documentation. Documentation can be generated by running python doc. Generated documentation can be found in doc/build/html/. You can read the current docs at ReadTheDocs.

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