CODEWITHSUNDEEP
mongodbmongoose
user5096599
user5096599

Reputation:

Mongo query always returns the value exists in database, when it does not

I am trying to query for a name field in mongodb and with the following code I always get the response that the value is a duplicate.

var checkUserName =  function (userName, email, res){
    User.findOne({ name : userName }, function () {
        if(userName  && typeof userName !== 'undefined'){
            res.send("duplicate");
        }else{
            checkEmail(email);
        }
    });
}

Upvotes: 1

Views: 121

Answers (1)

Reto
Reto

Reputation: 3141

you are currently ignoring the answer from the database completely and are just checking your input again. This cannot work. Mongoose returns the answer of the query as the second parameter of the callback function (the first is always there to signal errors) - try something like this:

var checkUserName =  function (userName, email, res){

  User.findOne({ name : userName }, function (err, userFromDb) {
    if (err) {
        console.log("there was an error: " + err;
        return res.send("err: " + err.message);
    }
    if(userFromDb) {
        res.send("duplicate");
    } else {
        checkEmail(email);
    }
  });
}

Upvotes: 1

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