Learn JWT with the PERN stack by building a Registration/Login system Part 1 

Hey All, to prevent any future confusion, the git repository and the code in the tutorial are a tiny bit different but still work the same way. I provided comments for these two files to show you the difference. TL;DR => The payload for the JWT generator was different. jwtGenerator.js => github.com/l0609890/pern-jwt-tutorial/blob/master/server/utils/jwtGenerator.js dashboard.js => github.com/l0609890/pern-jwt-tutorial/blob/master/server/routes/dashboard.js I also notice that I used a post request when accessing our dashboard. This is not right! It should be a get request , because I am simply requesting information. Your application will still work;however I want to make sure you guys get the best practice so don't do what I did.

Love the excitement of finding a course that deals with exactly what I need. I've created authentication with this stack before but this is going to be a good refresher

This is really a great approach to have a code review at the beginning, it makes it to be more understandable for sure. Thank you

Man, your tutorials are awesome. I knew a bit of express and a bit of react and stuff but didn't feel like I could actually build something with these technologies. Then I went through your to-do list and suddenly I realized that I have all the tools I need to be able to make a simple CRUD website, I just never knew how to put it all together. Your tutorials have literally unlocked me, I can now finally build websites for real!

Thank you so much for simplifying and explain this! I have gone through many tutorials but after watching this, it all makes sense.

Perfect example of what I am trying to build with the same exact stack. Thank you very much for creating this video

i really really really love your tutorial videos because you always explain what the code does but doesn't make me overwhelmed. Thank you so much!!

Love how you explain each and every step so well man! If you do get the chance and build more complex applications with production level authentication and authorization, that would be amazing! Looking forward to more great content from you, subbed! :D

Thank you so much, you save me when I dive into the Backend with PERN stack, your tutorial is so practical and very easy to understand

Great tutorial! Really made jwt with PERN stack totally transparent to me. Thanks!

such an amazing teacher you are ! Please make another project on PERN stack. Will really help us beginner developers!

Great tutorial. I need more PERN tutorial like many to many relationship.

Henry, Such an amazing tutorial. The way you explain things is excellent. this is so great! thank you so much. not many programers have the ability to explain the way you did. I was looking such kind of programers, where have you been man! keep it up !!!!! 👌❤️.

best pern stack tutorial out there without using an orm of course

great tutorial! i tried prisma and it really simplifies all the sql queries if you are more familiar with json and mongodb.

Thank you for this tutorial, it was really helpful!

Thank you very much for posting these videos man.

henry your tutorials are awesome.....and very very helpful...pls make more of them

Really appreciate your videos brother. Thank You So Much. Greetings from India

great content, best found so far, please keep it up!

You are insanely talented at teaching

Very intuitive tutorial, greetings from Portugal :D

Great content, im new to backend development and this video really explains alot

Great stuff man, keep up the good work.

Thanks for the great tutorial bro. I subscribed for the high quality content :D

Really appreciate your work. All the content everywhere related to authentication is using the MERN stack, I just found this video in the comment section of another video explaining how to do authentication with postgres and express but no react :/ but luckily I ended up here. Thanks a lot! Gonna enjoy this as well as the rest of your videos so I can really master the PERN stack!

Good job and I like your explanation simple and clear

Perfect tutirial! Well done!

for real this is a gem🥳 what a video thank you brother

Thanks a lot.Nice explanation too!Keep it up!! You earned a sub

Amazing tutorial. I got stuck at 1:12:46 when you created the authorization middleware. I believe there should be a next() at the bottom so the function continues to run. Once that was fixed it worked fine.

You sir just saved my life!

I want to say thank you and you the master!

Amazing explantion! Tks

Thanks, bro! Nice tutorial.

Great content, thank you so much 🙂

great video dude, thankyou

thank you bro , i expect more content from you :)

very well explained!

thanks a lot. learned so muchhh!!!

Really helpfull tutorial, it has way to little thumbs up. Everything works perfect.

Enjoyed it.Please do bigger series and go deeper. Like implementing many to many relationship etc.

You save my homework, thanks!

great tutorial, thanks for that

its been 2 years, but i really thanks bout your content

Really nice guide man

Wrist bellies... lol belly bands? Love the video and the laughs along the way

Wow this is awesome! Thanks for the good explanation of each step. I do have a minor complaint: Many tutorials assume that the viewer is too "dumb" to follow more intermediate use-cases and I think this is really unhelpful. If you do know how to incorporate this into a context/state management library and have the time to show that, that would be infinitely more instructive. These are videos after all and we can take as long as we want to understand each step. It would have also been great to see how this works with the exisint todo app you made (like how do you store todos by user? How do you load the correct user's todos once authenticated?) There are many scattered tutorials that show bits and pieces of how these things work but too few show how they all fit together. Almost none actually when it comes to this stack.

Thanks a lot, Henry! Can u please make a video about https/cors, Redis, or microservices?

Hello. I read everywhere that the JWT should never be stored in local storage, but in cookies instead. May I ask you why you decided to store it in local storage?

Me: "Why is this guy's machine so damn slow?!" Video: 43:07 Me: "Oh, nevermind"

Quality content

Thank u sir for ur help

exactly what i wanted

thank you sir

Thanks for making this! Very helpful and interesting. Why in the authorize middleware do you set the payload.user to the req.user? Shouldn't they be the same if they are authorized? Also, VSC yelled a lot about both req and payload not containing a user property but I'm like converting this to typescript so that error is a little bit out of the scope of this video

Great stuff.. Looking forward to learn postgresql.. Ps: Never store jwt in localstorage... Save it in a cookie instead..

Very Helpful tutorial, could you please make a tutorial covering S3 redux and postgresql?

Thanks this is nice tutorial in the internet, the way you explain complicated things more easier to me. I think your pc lagging because your antivirus. haha

Hey! Going through the tutorial and trying to use postman on the register route at 44:31 and I'm getting the following error: Error: connect ECONNREFUSED 127.0.0.1:5000 Request Headers Content-Type: application/json User-Agent: PostmanRuntime/7.26.10 Accept: */* Host: localhost:5000 Accept-Encoding: gzip, deflate, br Connection: keep-alive it's also got a note that says it might be missing required headers? Any tips?

My route is not working at 44:31 when I try to make a post request. When I open localhost:5000 on browser it says cannot get /. How can I solve this problem?

thanks!!!!

thank you thank you thank you

Cool video! Can you say what the main processes are to secure the login and registration like from sql injections?

When I attempt to post correct token string as the token header nothing happens. However, when I input wrong or empty string as a token, it works. What am I doing wrong?

52:18 still getting a Server Error in POSTMAN and in my terminal am getting an ERROR saying null value in column "user_name" of relation "users" violates not-null constraint How is it working for him when he has created tables with a Not Null Constraints?

Please make more content on this stack

I get this error in console : Failed to load resource: the server responded with a status of 401 (Unauthorized) when loading any page. in post man when I tried doing 44:51, I got 404 not found. P.S. i zip downloaded the entire project and installed dependencies (by following beginning part of video) along with creating table and db in my PostgreSQL. Can anyone help ?

why do we need a jwt token at the registration if it works only 1 hr?

I did not get the twotwo reference at 44:17. What was that?

My dashboard says status 200, but doesn't print anything ( res.json), what should I do?

you are good speker, i am from Ukraine and understand all what you say

Thanks for this tutorial man. And you are a really good teacher but quick quest can I understand what this does "(![name, email, password].every(Boolean))" I understand every runs through the array and returns true if all conditions are met, what is the Boolean in the every method, is it some sort of callback that is behind the scene?

everything is the same with yours until 1.18.39. when I add authorization, it always throw an error such as "email or psw is incorrect". what's wrong with my code?but I do the same things with you? I didn't get what's wrong. but thanks, you explain very well and clearful. I'm thankful to you.

Hi, I'm not sure why, but I am getting an error "data and salt arguments required" for following the steps up until 52:20 . When I console.log(password) it comes back undefined so the issue is with passing the password from the client side but I don't know how to fix this error. I'd appreciate any advice and help! Thanks.

How do you writing query in different lines instead of writing in one line..?

hey everyone, my req.user is returning as undefined in dashboard.js does anyone have a fix for that?

does anybody know how setup postman because I keep trying to test mine on postman but it is not working

Not generating the JWT token for some reason. Can anyone help?

What's inside user_id ? At timing 19.19, line number 31?

Hallo. Thank you so much for tutorial. I have one problem. 48:05 When i want to check if user exist, I got this error : Cannot read property 'length' of undefined

Hi Henry, thank you for the great tutorial, I had a problem ( my doing, your video is flawless) I deleted my table, now my page doesn't work, I'm getting jwt expired and invalid syntax for type uuid: "register", any ideas? thanks in advance, keep up the great work.

Why my length says cannot read length of undefined

Hey Bro! Iam getting an error while installing bcrypt error:" bcrypt@4.0.1 install: `node-pre-gyp install --fallback-to-build`" please let me know where I made the mistake or solution for this error.

Does he cover refresh tokens?

Thoughts on REPN vs PERN? "REP N" like nginx

if your middleware requests are stuck in a loop on postman, just remember to execute the next(); function so it knows to move on

Hi Henry, for the authorization.js, when I console.log verify, it is an object {iat:343423423, exp:23423432} . How can you set req.user = verify.user since verify does not has a "user" key. Later on for dashboard.js I couldn't access the user_Id, since the authorize doesn't get back the user_id~ please help thank you

Hmm, when generating a JWT token I am getting a Server Error after doing, res.json({ token }) however, the new user is still added. Does anyone know why I'd get a error returned as opposed to the token returned? I've been following along exactly, I think.

Hey, I loved your tutorial, and if you see this, I have a suggestion for you. Please please please, reduce the size of your integrated terminal so that we can see more of the code at once. Half your screen is occupied by the terminal for no reason. It's much easier to follow along when we can see more lines of code at once. Other than that, great explanation. Thanks!

validinfo status missing should be 400 bad gateway for clean. thank you for making tutorials

Hello I have a question regarding this code, are you still active and do you mind clarifying some questions that I have ?

Wow so helpful. can i have a questions? I got stuck in dashboard.js. Why on my dashboard cannot response user_id but the status is still 200 omg help me.

"In the client section, it's not too complicated you'll figure it out" then proceeds to chuckle. 🤔🤭

Why you didn't use sequelize?

const {Pool} = require('pg') is shorter :)

For some reason the jwtToken variable is 'undefined' after this part 'const jwtToken = req.header("token")'. Is anyone else having this problem? The request header is undefined

How many other people came here after a full stack todo tutorial?

Hey I'm getting an error while running psql -U postgres

Cannot set headers after they are sent to the client, someone with this error????