mongodb support in pyramid

__init__.py

import .subscribers

def main(global_config, **settings):
    ## ...
    # Initialize mongodb , which is a subscriber
    .subscribers.mongodb.initialize_mongo_db( config , settings )
    ## ...
    return config.make_wsgi_app()

README.txt

Python MonogoDB integration, based on http://docs.pylonsproject.org/projects/pyramid_cookbook/en/latest/mongo.html

I'm migrating a few projects to use mongodb, and I found this to be the easiest way to maintain across all projects ( as in, i don't have to change any code outside of .ini files )

1. the main() routin in __init__.py just needs to call subscribers.mongodb.initialize_mongo_db()
2. subscribers has a single file called mongodb, which initializes
3. environment.ini has its own mongodb space.  setting mongodb_use to 'true' will initialize it, setting it to anything else will ignore it.

environment.ini

[app:myapp]
#...
mongodb_use = true
mongodb_uri = mongodb://localhost
mongodb_name = myapp

#...

subscribers-mongodb.py

import pymongo
from gridfs import GridFS

def initialize_mongo_db( config, settings ):
    if ( 'mongodb_use' in settings ) and ( settings['mongodb_use'] == 'true' ):
        conn = pymongo.Connection( settings['mongodb_uri'] )
        config.registry.settings['mongodb_conn'] = conn
        config.add_subscriber(add_mongo_db, 'pyramid.events.NewRequest')


def add_mongo_db(event):
    settings = event.request.registry.settings
    db = settings['mongodb_conn'][settings['mongodb_name']]
    event.request.mongodb = db
    event.request.gridfs = GridFS(db)