In Mongoose, how do I sort by date? (node.js)

Question

let's say I run this query in Mongoose:

Room.find({}, function(err,docs){

}).sort({date:-1}); 

This doesn't work!

Answer 1

Sorting in Mongoose has evolved over the releases such that some of these answers are no longer valid. As of the 4.1.x release of Mongoose, a descending sort on the date field can be done in any of the following ways:

Room.find({}).sort('-date').exec(function(err, docs) { ... });
Room.find({}).sort({date: -1}).exec(function(err, docs) { ... });
Room.find({}).sort({date: 'desc'}).exec(function(err, docs) { ... });
Room.find({}).sort({date: 'descending'}).exec(function(err, docs) { ... });
Room.find({}).sort([['date', -1]]).exec(function(err, docs) { ... });
Room.find({}, null, {sort: '-date'}, function(err, docs) { ... });
Room.find({}, null, {sort: {date: -1}}, function(err, docs) { ... });

For an ascending sort, omit the - prefix on the string version or use values of 1, asc, or ascending.

Answer 2

The correct answer is:

Blah.find({}).sort({date: -1}).execFind(function(err,docs){

});

Answer 3

Been dealing with this issue today using Mongoose 3.5(.2) and none of the answers quite helped me solve this issue. The following code snippet does the trick

Post.find().sort('-posted').find(function (err, posts) {
    // user posts array
});

You can send any standard parameters you need to find() (e.g. where clauses and return fields) but no callback. Without a callback it returns a Query object which you chain sort() on. You need to call find() again (with or without more parameters -- shouldn't need any for efficiency reasons) which will allow you to get the result set in your callback.

Answer 4

I do this:

Data.find( { $query: { user: req.user }, $orderby: { dateAdded: -1 } } function ( results ) {
    ...
})

This will show the most recent things first.

Answer 5

Post.find().sort({date:-1}, function(err, posts){
});

Should work as well

EDIT:

You can also try using this if you get the error sort() only takes 1 Argument :

Post.find({}, {
    '_id': 0,    // select keys to return here
}, {sort: '-date'}, function(err, posts) {
    // use it here
});

Answer 6

See if this helps > How to sort in mongoose?

Also read this > http://www.mongodb.org/display/DOCS/Sorting+and+Natural+Order

Answer 7

Short solution:

const query = {}
const projection = {}
const options = { sort: { id: 1 }, limit: 2, skip: 10 }

Room.find(query, projection, options).exec(function(err, docs) { ... });