Can't get value from mysql result using Express/Node

Question

I'm working on a pluralsight module for authentication and I'm stuck at the point of actually trying to authenticate users.

connection.query('SELECT * FROM users WHERE username LIKE ?', [data.username], function (err, results) {

    if (err) throw err;

    var results=(JSON.stringify(results));

    console.log(results);

    console.log(results.password)

    if(results.password === password){

        var user = results;

        // done(null, user);

    } else {

        console.log('else')

        // done('Bad password', null)

    }

});

I have this mysql query which looks up the record corresponding to the username and then returns an

err

or

results

. I've used

JSON.stringify

to convert the initial result:

[ RowDataPacket { id: 12, username: 'qqq', password: 'qqq' } ]

To this:

[{"id":12,"username":"qqq","password":"qqq"}]

But

results.username

and

results.password

bot are undefined. So it looks to me that the stringyfied results is an array with an object in it.

But when I do

console.log(results[0].username);

console.log(results[0].password);

They are still

undefined

. So how do I store the username/password inside a variable?

Answer 1

Try looping through the result set like this:

for (var i = results.length - 1; i >= 0; i--) {
    var current = results[i];
    console.log(current);
}

Then if all goes well, you should be able to check each variable with: current.username etc..