Explicitly define backend/promotions routes

[vladstoick]

Currently the show route is also include but it's never defined which leads to a
AbstractController::ActionNotFound being thrown in case someone reaches
that page

[kennyadsl]

Thanks, left a comment to improve how to exclude a single route from resources.

[kennyadsl]

I'd write except: :show instead?

[vladstoick]

Changed it 👍

[kennyadsl]

Thinking twice, it's probably better to redirect to the :edit route, as we did in backend products controller.

[mtomov]

Thinking twice, it's probably better to redirect to the :edit route, as we did in backend products controller.

this has been the best redirect ever, as I can relatively easy add admin to the frontend products page url to get to the admin one. Not as easy the opposite way around.

In the promotions, I don't think it matters much.

[kennyadsl]

The thing I was thinking at is that by only removing the :show route we still have a 404 error (instead of the current AbstractController::ActionNotFound), which does not solve the case someone reaches that page. With the redirect in controller instead we wont have any error.

[jordan-brough]

Thank you!

[kennyadsl]

@vladstoick thanks!