pymodm 0.4.3

Why PyMODM?

PyMODM is a “core” ODM, meaning that it provides simple, extensible functionality that can be leveraged by other libraries to target platforms like Django. At the same time, PyMODM is powerful enough to be used for developing applications on its own. Because MongoDB engineers are involved in developing and maintaining the project, PyMODM will also be quick to adopt new MongoDB features.

Support / Feedback

For issues with, questions about, or feedback for PyMODM, please look into our support channels. Please do not email any of the PyMODM developers directly with issues or questions - you’re more likely to get an answer on the MongoDB Community Forums.

Bugs / Feature Requests

Think you’ve found a bug? Want to see a new feature in PyMODM? Please open a case in our issue management tool, JIRA:

• Create an account and login.

• Navigate to the PYMODM project.

• Click Create Issue - Please provide as much information as possible about the issue type and how to reproduce it.

Bug reports in JIRA for all driver projects (e.g. PYMODM, PYTHON, JAVA) and the Core Server (i.e. SERVER) project are public.

Example

Here’s a basic example of how to define some models and connect them to MongoDB:

from pymongo import TEXT
from pymongo.operations import IndexModel
from pymodm import connect, fields, MongoModel, EmbeddedMongoModel


# Connect to MongoDB first. PyMODM supports all URI options supported by
# PyMongo. Make sure also to specify a database in the connection string:
connect('mongodb://localhost:27017/myApp')


# Now let's define some Models.
class User(MongoModel):
    # Use 'email' as the '_id' field in MongoDB.
    email = fields.EmailField(primary_key=True)
    fname = fields.CharField()
    lname = fields.CharField()


class BlogPost(MongoModel):
    # This field references the User model above.
    # It's stored as a bson.objectid.ObjectId in MongoDB.
    author = fields.ReferenceField(User)
    title = fields.CharField(max_length=100)
    content = fields.CharField()
    tags = fields.ListField(fields.CharField(max_length=20))
    # These Comment objects will be stored inside each Post document in the
    # database.
    comments = fields.EmbeddedDocumentListField('Comment')

    class Meta:
        # Text index on content can be used for text search.
        indexes = [IndexModel([('content', TEXT)])]

# This is an "embedded" model and will be stored as a sub-document.
class Comment(EmbeddedMongoModel):
    author = fields.ReferenceField(User)
    body = fields.CharField()
    vote_score = fields.IntegerField(min_value=0)


# Start the blog.
# We need to save these objects before referencing them later.
han_solo = User('mongoblogger@reallycoolmongostuff.com', 'Han', 'Solo').save()
chewbacca = User(
    'someoneelse@reallycoolmongostuff.com', 'Chewbacca', 'Thomas').save()


post = BlogPost(
    # Since this is a ReferenceField, we had to save han_solo first.
    author=han_solo,
    title="Five Crazy Health Foods Jabba Eats.",
    content="...",
    tags=['alien health', 'slideshow', 'jabba', 'huts'],
    comments=[
        Comment(author=chewbacca, body='Rrrrrrrrrrrrrrrr!', vote_score=42)
    ]
).save()


# Find objects using familiar MongoDB-style syntax.
slideshows = BlogPost.objects.raw({'tags': 'slideshow'})

# Only retrieve the 'title' field.
slideshow_titles = slideshows.only('title')

# u'Five Crazy Health Foods Jabba Eats.'
print(slideshow_titles.first().title)