rails: allow showing link to sentry page on error page

[grosser]

Describe the idea

Why do you think it's beneficial to most of the users

• useful for internal apps to be able to link directly to the error
• useful for public apps to show an error code that engineers can later hunt down

Possible implementation
https://github.com/grosser/sentry-user_informer

[st0012]

I like the idea but I'm not sure if we need to use Fiber locals for that. Won't storing it in env work?

[grosser]

storing in env will work if the core middleware is refactored to pass the env to capture_exception

[st0012]

I just did it in #1847 😄

[grosser]

awesome ... so do you want to add this feature too then ?

[st0012]

I'm not convinced that we should maintain a new middleware + a template (even just minimum) for this. I think as an SDK, it should just inject the event id into the env and users/libraries should implement their solutions from there.

[grosser]

I'm fine with that too, good step forward and easy to do ...

[st0012]

Ok I’ll open a PR for that 👍

[st0012]

PR opened: #1849