问题
I'm retrieving results from mongo based on a geo query using the ruby driver. I'd like the results to be returned with their respective distances. That facility is available at the shell using geoNear command:
db.runCommand( { geoNear : "places", near : [50,50], num : 10 } );
How do I do this via the ruby API?
回答1:
where db is the connection to your db you can use #command :
db.command({'geoNear' => "places", 'near'=>[50,50], 'num' => 10})
This has to be an OrderedHash in ruby 1.8, hashes are ordered in 1.9 so you are all good with default hash if using 1.9
来源：https://stackoverflow.com/questions/5306241/can-i-access-the-geonear-functionality-of-mongo-via-the-ruby-driver