Do something if nothing found with .find() mongoose

Question

I'm storing some data in a mongodb and accessing it with js/nodejs and mongoose. I can use .find() to find something in the database just fine, that isn't an issue. What is a problem is if there isn't something, I'd like to do something else. Currently this is what I'm trying:

UserModel.find({ nick: act.params }, function (err, users) {   if (err) { console.log(err) };   users.forEach(function (user) {     if (user.nick === null) {       console.log('null');     } else if (user.nick === undefined) {       console.log('undefined');     } else if (user.nick === '') {       console.log('empty');     } else {       console.log(user.nick);     }   }); }); 

None of those fire when I do something where act.params wouldn't be in the nick index. I don't get anything to console at all when this happens, but I do get user.nick to log just fine when it's actually there. I just tried to do it in reverse like this:

UserModel.find({ nick: act.params }, function (err, users) {   if (err) { console.log('noooope') };   users.forEach(function (user) {     if (user.nick !== '') {       console.log('null');     } else {       console.log('nope');     }   }); }); 

but this still didn't log nope. What am I missing here?

If it doesn't find it, it just skips everything in the find call, which is fine, except I need to do things afterwards if it isn't there that I don't want to do if it is. :/

Answer 1

When there are no matches find() returns [], while findOne() returns null. So either use:

Model.find( {...}, function (err, results) {     if (err) { ... }     if (!results.length) {         // do stuff here     } } 

or:

Model.findOne( {...}, function (err, result) {     if (err) { ... }     if (!result) {         // do stuff here     } }