How to connect to a mongoDB

Question

I'm using mongoLabs to host my database and I want to connect to it from my app.

I'm also using the Motor module in pyMongo. I'm unsure where to instantiate the connection.

For instance I know that if the database was on same local machine as the app I would do this:

 database = motor.MotorClient().open_sync().myDatabase

The mongoLab site says to include the following uri in the driver:

mongodb://<dbuser>:<dbpassword>@ds047057.mongolab.com:47057/myDatabase

But I cannot see how to create the connection to this database.

Thanks

Answer 1

It looks like MotorClient takes the same arguments as MongoClient:

https://github.com/ajdavis/mongo-python-driver/blob/motor/motor/init.py#L782

http://api.mongodb.org/python/current/api/pymongo/mongo_client.html

Given that, you should be able to use the URI like so:

database = motor.MotorClient("mongodb://<dbuser>:<dbpassword>@ds047057.mongolab.com:47057/myDatabase").open_sync().myDatabase

Answer 2

You should to specify connection settings for MotorClient following these manuals: MotorClient takes the same constructor arguments as MongoClient, as well as, http://emptysquare.net/motor/pymongo/api/motor/motor_client.html#motor.MotorClient, http://emptysquare.net/motor/pymongo/api/pymongo/mongo_client.html#pymongo.mongo_client.MongoClient

"The host parameter can be a full mongodb URI, in addition to a simple hostname. It can also be a list of hostnames or URIs. Any port specified in the host string(s) will override the port parameter. If multiple mongodb URIs containing database or auth information are passed, the last database, username, and password present will be used. For username and passwords reserved characters like ‘:’, ‘/’, ‘+’ and ‘@’ must be escaped following RFC 2396."

db =  database = motor.MotorClient('mongodb://<dbuser>:<dbpassword>@ds047057.mongolab.com:47057/myDatabase
').open_sync().myDatabase

Answer 3

Previous answers have got a bit outdated, so the correct way according to the docs and as worked for me:

import motor.motor_asyncio
import asyncio
from asyncio import coroutine
db = motor.motor_asyncio.AsyncIOMotorClient().database_name

https://motor.readthedocs.io/en/stable/tutorial-asyncio.html https://github.com/mongodb/motor/blob/master/doc/tutorial-asyncio.rst