MongoDB find doesn't return an error if a record doesn't exist? MongoDB find doesn't return an error if a record doesn't exist? mongoose mongoose

MongoDB find doesn't return an error if a record doesn't exist?


Well, if the "username" doesn't exist, that doesn't mean there is an error. Instead you should do something like this.

user.find({ username: 'xyz' }, function(err, doc){  if(doc.length === 0 || err){    res.render('error', { errorMsg: "Error blah blah" } )  }});

Or more verbose version:

user.find({ username: 'xyz' }, function(err, doc) {    if(err){        res.render('error', { errorMsg: "Error blah blah" } )    } else {        if (doc.length === 0) {            console.log("User doesn't exist");        } else {            //do something        }    }});


var user = db.accounts.findOne({username: 'xyz'});if (!user) {   // handle error   alert('fail');}


Try to check if the doc is null or not first and then you can get on with your function.

user.find({ username: 'xyz' }, function(err, doc){   if(doc === null || err){      res.render('error', { errorMsg: "Error blah blah" } )   }   else {      do something...    }});