If you want to use MongoDB (via PyMongo and perhaps GridFS) via Pyramid, you can use the following pattern to make your Mongo database available as a request attribute.
First add some hair to your development.ini file, including a MongoDB URI and a "db_name" (the Mongo database name, can be anything).
[app:myapp]
# ... other settings ...
db_uri = mongodb://localhost/
db_name = myappThen in your __init__.py, set things up such that the database is attached to each new request:
from pyramid.config import Configurator
from pyramid.events import subscriber
from pyramid.events import NewRequest
from gridfs import GridFS
import pymongo
def main(global_config, **settings):
config = Configurator(settings=settings)
db_uri = settings['db_uri']
conn = pymongo.Connection(db_uri)
config.registry.settings['db_conn'] = conn
config.add_subscriber(add_mongo_db, NewRequest)
config.add_route('dashboard', '/')
# other routes and more config...
config.scan('myapp')
return config.make_wsgi_app()
def add_mongo_db(event):
settings = event.request.registry.settings
db = settings['db_conn'][settings['db_name']]
event.request.db = db
event.request.fs = GridFS(db)At this point, in view code, you can use request.db as the PyMongo database connection. For example:
@view_config(route_name='dashboard',
renderer="myapp:templates/dashboard.pt")
def dashboard(request):
vendors = request.db['vendors'].find()
return {'vendors':vendors}Niall O'Higgins provides a pyramid_mongodb scaffold for Pyramid that provides an easy way to get started with Pyramid and MongoDB.
Niall O'Higgins provides a presentation he gave at a Mongo conference in San Francisco at https://www.10gen.com/presentation/mongosf-2011/mongodb-with-python-pylons-pyramid
- Pyramid traversal and MongoDB: http://kusut.web.id/2011/03/27/pyramid-traversal-and-mongodb/
- Pyramid, Aket and MongoDB: http://niallohiggins.com/2011/05/18/mongodb-python-pyramid-akhet/