In trying to construct a few statics with Mongoose, I can't seem to get access to the error argument when calling find() or findOne(). Here's my static:
User.statics.authenticate = function(login, password, cb){
return this.model('User').findOne({
username: login,
password: password
}, function(err, user){
console.log("error", err);
console.log("user", user);
}).exec(cb);
};
I'm trying to call it with something like this:
exports.session = function(req, res){
return User.authenticate(req.body.login, req.body.password, function(err, doc){
console.log('err', err);
console.log('doc', doc);
});
};
In every circumstance, no matter the results of the findOne query, err is always null. Any idea on what's going on here? Maybe I just can't wrap my head around all of these callbacks...
Apparently an empty query result is not actually an error, so that's the reason 'err' remains null despite not finding a result. So, you need to test if 'user' is null or not, and then create your own error.
I'm not sure it quite explains what you're seeing, but if you provide a callback function directly to findOne then you don't call exec. So your authenticate function should look like this instead:
User.statics.authenticate = function(login, password, cb){
this.model('User').findOne({
username: login,
password: password
}, function(err, user){
console.log("error", err);
console.log("user", user);
cb(err, user);
});
};