Add Mongo Index Via Javascript

Question

I want to add an index to my mongo collection outside of the interactive Mongo shell.

We're building in Python, so I could set it through MongoEngine, however, I'd greatly prefer to set the indexes directly.

Can I use db.eval() to make this happen?

lobster1234 · Accepted Answer · 2011-10-18 22:10:38Z

2

You can use collection_name.create_index API from Python.

http://api.mongodb.org/python/1.11/api/pymongo/collection.html

If using Javascript, the problem with eval() is that it needs a write lock, and creating an index itself needs a write lock. I do not think you can use eval() for anything that needs a write lock due to this reason.

edited Oct 18, 2011 at 22:10

answered Oct 18, 2011 at 22:04

lobster1234

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Ben Over a year ago

Thanks Lobster. You can create an index in the background, which I believe removes the need for a lock. db.eval() failed for me, so I'm game for your solution

Phillip Kovalev · Accepted Answer · 2011-10-18 22:08:50Z

0

You can use QuerySet.ensure_index.

answered Oct 18, 2011 at 22:08

Phillip Kovalev

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