rank leaderboard in mongo with surrounding players

Question

how would I create a query to get both the current player\'s rank and the surrounding player ranks. For example, if I had a leaderboard collection with name and points

Answer 1

You'll need to do three queries:

var john = db.players.findOne({name: 'John'})
var next_player = db.players.find(
    {_id: {$ne: john._id}, pts: {$gte: john.pts}}).sort({pts:1,name:1}).limit(-1)[0]
var previous_player = db.players.find(
    {_id: {$ne: john._id}, pts: {$lte: john.pts}}).sort({pts:-1,name:-1}).limit(-1)[0]

Create indexes on name and pts.