Rails config for raise on missing translations

[lukaszx0]

If I recall correctly, it disappeared from 3-0 and was missing ever since, restored back in 4-1. This PR backports @kassio's commit from 4-1 to 4-0.

Would be great if we could pack this in 4.0.6 release.

/cc @tamird

[sgrif]

Seems like this is an improvement rather than a bug fix. Isn't 4.0 bugfix only?

[tamird]

Looks like a bugfix to me, in that it corrects a regression. More info: #13196

[lukaszx0]

For me, it's very old regression which wasn't fixed.

[rafaelfranca]

When I was working with @kassio on this I thought we should apply to 4-0-stable too because a security fix removed the possibility to raise on missing translation but since it doesn't work on 3.x and it is adding a new configuration I choose to not apply to 4.0.

I'm know a lot of people already requested this before so I would consider merging it but I still don't have a strong reason to do.

@matthewd @senny @chancancode WDYT?

[egilburg]

Is this a environment-based config? I'd like ability to raise on missing translations in dev/test mode, but not in production.

[rafaelfranca]

As every config on Rails you can set wherever you want.

[derekprior]

While it is a new configuration option that configuration options enables functionality that existed before the security fix and gives people who can't upgrade to 4.1 a chance to bring this functionality back.

[calebhearth]

I'd also say that this is a regression. If that requires a config option, so be it, but it's been painful not having this behavior available.

[calebhearth]

🎊 🎆

[lukaszx0]

Thanks @rafaelfranca 👍