No, it's forbidden by the web gods

Sure. Mastodon is written in Ruby on Rails, for example.

Sure, but there are a gazillion forum websites already. I'd just use an existing one. The one D uses is the best I've ever used. I think it's actually written in D, which is a very niche language but way nicer than Ruby.

Sure. Discourse is quite popular forum software and it’s written in ruby.

I think forums are the one type of website that's simply impossible to make with Ruby on Rails. In fact, I don't think any web framework can handle it...

I think your best bet in this instance is to code everything directly in binary. That's what I would do

Edit: apparently I actually needed to add /s

You could but it's no longer in vogue. Try Elixir instead.

Though for us to know

I'm not sure, I'll try asking Gemini.

it suggested using next! Don't do it! Don't use ruby!

Have you considered doing it in Rust instead? You can even do the frontend in Rust for extra internet points.

Can I make a forum website with Ruby on Rails?

I'm sure that there's a Ruby-on-Rails-based forum package out there.

kagis

Yes.

https://github.com/thredded/thredded

there is only ultimate.cgi

I don't know. Can you?