My route looks like
match 'about' => 'company#about'
When I set to the url http://localhost:3000/aboutttt, I get the error message
No route matches [GET] "/aboutttt"
I want to give the user better feedback than that.
The best solution by my opinion could be redirect the app back, or on the homepage of the app, but exist in routes any way to set default route, when I get the error above?
Run your app with the environment set to production and I think you'll find you'll no longer see this message. It's a convenience for debugging while you're developing.
There's a setting in config/environments/production.rb or config/environments/development.rb (I can't remember which way round) which controls whether exceptions are rendered as views. This is off for production - instead you get the 404.html that's in public, which you can change as you please.
While you are on development. Make changes inside config/environments/development.rb by setting:
config.consider_all_requests_local = false
This will disable full error reporting and instead shows a page with interactive response for users. But this is already disabled on production environment. But I don't recommend turning it off in development mode.
来源：https://stackoverflow.com/questions/10218912/rails-how-to-handle-routes-that-dont-exist-no-route-matches-get