active_storage_validations VS Browser

I recommend pairing this approach with the active_storage_validations gem and adding a validation to the attachment field to ensure that the attachment that you'd like to resize is an image. Ideally, an application should gracefully handle invalid input with useful error messages.

You can use the gem https://github.com/igorkasyanchuk/active_storage_validations. I've made a video on how to use it, you can check it here: https://www.youtube.com/watch?v=woEgyQ8I7RA Hope it helps!

active_storage_validations

Very interesting, thank you! I didn't know this variant feature on erb files. It would only work after a request is made (and not if a window is resized for example) but it seems powerful. I'll try it for sure. I have used this browser gem in the past which helped me achieve something similar for specific cases, but this seems cleaner.

browser

- [browser](https://rubygems.org/gems/browser)

I’ve always used the browser gem to detect devices. It wirks really well, and it is still being maintained

I have not benchmarked them but if you're porting old code to Browser beware that sometimes its predicate methods return true, sometimes false, and, sometimes: nil.