How to work with Database in routes? Rails 3

Hello. How to check presence of object in DB in routes? If object
exists in DB - rais app shows its page, if not - it redirects to 404.
I know that it's possible to do all this logic in controller but i
would to know how to do it in routes.

I don't think you can. Routes map urls to controllers & actions -
that's it.

Fred

Hello. How to check presence of object in DB in routes? If object

exists in DB - rais app shows its page, if not - it redirects to 404.

I know that it’s possible to do all this logic in controller but i

would to know how to do it in routes.

I don’t think you can. Routes map urls to controllers & actions -

that’s it.

Right – seems that even if you could do this, it would be fighting the Rails conventions. Not sure what you are really trying to achieve, but if your concern is to intercept something before getting into a controller action you could do a before_filter in your ApplicationController and place this kind of logic there.

You could use http://edgeguides.rubyonrails.org/routing.html#advanced-constraints
for that, but probably I wouldn't go this way.

Robert Pankowecki
http://robert.pankowecki.pl