Pymorm

Really simple pymongo-based ODM for MongoDB. The only requirements are Bunch and, obviously, pymongo.

Updates

• 0.4.9 Solved bug overwriting False/None values with the default value.

• 0.4.7 Better explaining errors at index resolution stage.

• 0.4.6 Index resolution is not mandatory anymore.

• 0.4.4 Fixed manipulator to avoid errors if None is returned by a query.

• 0.4.3 Added missing support to sparse indexes.

• 0.4.2 Added MongoDB>=3.0 with WiredTiger support.

• 0.4.1 Added pymongo>=3.0 support. Documentation improved.

• 0.4.0 General refactoring. Moved everything from __init__.py. Changed .commit() to .save().

• 0.3.4 Overwritten default find_and_modify behavior, setting manipulate=True so that it returns an instance of the mapped class instead of a dictionary.

• 0.3.3 Cleaner mapping for returned documents. No need to monkeypatch the Cursor class anymore.

• 0.3.0 Added __defaults__ property in MongoObject, used to declare default values for documents. The fields in __defaults__ can also be callable. The callable will be called the first time the document is retrieved through the library.

Example

from pymorm import MongoObject, MongoObjectMeta
from pymongo import MongoClient

db = MongoClient("mongodb://localhost:27017/pymorm").get_default_database()


class Test(MongoObject):
    __metaclass__ = MongoObjectMeta
    __collection__ = db.tests

    __defaults__ = {"username": "Test",
                    "happiness": lambda: "poor"}

    def test_method(self, test):
        return test

    @property
    def test_property(self):
        return "test"

    @classmethod
    def test_classmethod(cls):
        return cls.__name__


user = Test.add({})
user2 = Test.add({"username": "Walter"})
user2.happiness = "a lot!"
print user
print user2
user.save()

> User(_id=ObjectId('5519e5eb5dde7310f04d9bbe'), happiness=u'poor', username=u'Test') 
> User(_id=ObjectId('5519e5eb5dde7310f04d9bbe'), happiness=u'a lot!', username=u'Walter') 

Enjoy!