FAQ: Passport.js Local Authentication - Passport's Local Strategy

Frequently Asked Questions Uncategorized
1

Community%20FAQs%20on%20Codecademy%20Exercises
Community%20FAQs%20on%20Codecademy%20Exercises1000×208 141 KB

This community-built FAQ covers the "Passport’s Local Strategy " exercise from the lesson “Passport.js Local Authentication”.

Paths and Courses
This exercise can be found in the following Codecademy content:

(Beta) User Authentication & Authorization in Express

FAQs on the exercise _Passport’s Local Strategy _

There are currently no frequently asked questions associated with this exercise – that’s where you come in! You can contribute to this section by offering your own questions, answers, or clarifications on this exercise. Ask or answer a question by clicking reply (reply) below.

If you’ve had an “aha” moment about the concepts, formatting, syntax, or anything else with this exercise, consider sharing those insights! Teaching others and answering their questions is one of the best ways to learn and stay sharp.

Join the Discussion. Help a fellow learner on their journey.

Ask or answer a question about this exercise by clicking reply (reply) below!
You can also find further discussion and get answers to your questions over in Language Help.

Agree with a comment or answer? Like (like) to up-vote the contribution!

Need broader help or resources? Head to Language Help and Tips and Resources. If you are wanting feedback or inspiration for a project, check out Projects.

Looking for motivation to keep learning? Join our wider discussions in Community

Learn more about how to use this guide.

Found a bug? Report it online, or post in Bug Reporting

Have a question about your account or billing? Reach out to our customer support team!

None of the above? Find out where to ask other questions here!

2

Just a little thing on the last statement in step 5 don’t forget to add a semi colon because even though the example code doesn’t have one you will get an error thrown for not adding one in/wonder what you did wrong otherwise.

3

Ok, so I’m working on the password authentication here and I can’t get past step one without having to input the entire code listed in the solution. Step one just wants me import my local strategy, and when I try to find the solution, the entire code for the whole project is shown. It seems like it won’t let me past without inputing the entire code solution. Pic for help

Screen Shot 2022-03-02 at 4.18.34 AM
Screen Shot 2022-03-02 at 4.18.34 AM1920×1200 125 KB

4

Where is db coming from exactly? Even if it is provided, it is not imported, so it feels weird to me…

2 Likes
5

The sections specifically says to could you use arrow notation when configuring local LocalStrategy. Could you use arrow
like this.

passport.use(new LocalStrategy(
  (username, password, done) => {
    db.users.findByUsername(username, (err, user) => {
      if(err) return done(err);
        ...

instead of this

passport.use(new LocalStrategy(
  function (username, password, done){
    db.users.findByUsername(username, (err, user) => {
      if(err) return done(err);
         ...

the code above is what you need to get the “check work” to validate.

1 Like
6

Out of curiosity, why do we use the inequality operator instead of strict inequality when checking the password? Codecademy requires the former to move to the next step, specifically: if (user.password != password)

3 Likes
7

I was also confused by this - to me it seems strange to use the loose equality operator here.

8

It would be good to know how the db.users.findByUsername works. Does it mean the “findByUsername” method has to be written in a way that accepts that callback function as a second argument? It’s a bit annoying, because after completing the lesson I’d like to be able to test myself by setting up an express app locally on my device, but there are some missing pieces that you can’t do it without.