MongoDB找到集合中的最新日期

Question

I want to search the newest date in a collection. The date is formatted like this: YYYY-MM-DD . For instance:

{ "release" : "2014-09-25", "desc" : "Test1", "status" : "ok", "_id" : "…" }
{ "release" : "2014-09-26", "desc" : "Test2", "status" : "ok", "_id" : "…" }
{ "release" : "2014-09-27", "desc" : "Test3", "status" : "ok", "_id" : "…" }

The result set should be:

{ "release" : "2014-09-27", "desc" : "Test3", "status" : "ok", "_id" : "…" }

Is there a special mongoDB operator for that case, or do I have to fetch all documents in the collection and make a loop?

Any help would be greatly appreciated

Answer 1

You are storing date as String, please change it to date object and the you could sort it using mongo sort

http://docs.mongodb.org/manual/reference/method/cursor.sort/

db.collection.find().sort( { date: -1 } ).limit(1)

For storing as date from moment.js see this link here: Inserting a momentjs object in Meteor Collection