Mongo Query Examples

mongo-examples.js

// find one record with the hightest value
User.find({}).sort({goldenTicket: 'descending'}).limit(1).exec(function(err, items) {
  if (!items[0].goldenTicket) {
    deferred.resolve(1000); 
  } else {
    deferred.resolve(items[0].goldenTicket + 1);
  }
}); 
  
// choose a random problem and return it
Problem.count(function(err, ct) {
  var r = Math.floor(Math.random() * ct);
  Problem.find({ event: 'tco14' }).limit(1).skip(r).exec(function(err, problem) {
    console.log(problem);
  });
});