Liveview and Supabase Auth access_token

giusdp

Hi everyone,

I’m finding myself kinda paralyzed over this issue of authenticating (signup/login) an user in my Liveview+Supabase project. Mostly due to where to put the access_token (and refresh) that supabase gives me.

Supabase offers its own auth system with an api on top for user registration/login, it uses JWTs. In my project I have an UserController that calls the login endpoint with the credentials provided. I’m unsure if this is a good approach cause here the client sends the credentials to the server, the server calls the supabase api and gets the access_token, then where to store this access_token?

I’m using ecto with supabase so it’s kinda seamless from using any other postgres db (which is awesome), but I’m stuck on how to use and store these access_tokens for future queries after I login.

Perhaps should I just ignore the auth system and do it myself with phx.gen.auth and create my own users tables on the supabase postgres?

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/phoenix #liveview #supabase

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2024-03-28 15:13:54 UTC

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giusdp

I’m thinking about just dropping the Auth api from supabase and use it as a pure Postgres DB with ecto. So I will just use phx.gen.auth for my auth system. At that point I’m not sure if it’s convenient to still use supabase instead of my own DB, but money-wise it seems it’s still better to use supabase. It has a free tier and a 25$ tier, while most hosting solutions cost way more to just reach the hardware in the 25$ tier.

Post #1

conradfr

I had recently the same question but with Firebase.

Where I’m at now is that I use Firebase only to log in the user (keeping it client side via a LiveView hook), verify the returned JWT at the backend level and then use Guardian and its own generated JWT to keep the user logged. That way I use Guardian plugs & helpers.

It’s a bit involved, especially as Phoenix doesn’t have built-in auth(s) support but it seems to work OK.

As for LiveView I stumbled upon “live_session” randomly and it’s useful. Read Live sessions in action · The Phoenix Files to know more.

To be honest if I only wanted to support email/password I would have probably used the (meh) Phoenix auth generator.

Post #2

giusdp

I think I was in the direction of your solution. After a day of confusion I thought about using the auth api on the client side and pass the access_token to the server, then use it somehow to authenticate the user in my app for the routes. I found out about guardian to do authentication as well. Then I backtracked and gave up on the auth api cause I was getting nowhere.

Knowing someone else went through the same problems and managed to make it work gives me confidence to try it again. So thanks for the reply! I think I will go the same route so I can take advantace of the social logins and so on.

Post #3

Debian3

Have you ever made progress on this? I feel like supabase auth have all the batteries included and I’m unsure how to integrate that with the gen.auth.

Post #5

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