Rack is a dependency of Rails so it will get installed when you install
the Rails gems. Also keep in mind certain versions of Rails requires a
certain version of Rack. Sometimes even an older one than the current.
If in doubt just run:
sudo gem install rails
> Rack is a dependency of Rails so it will get installed when you install
> the Rails gems. Also keep in mind certain versions of Rails requires a
> certain version of Rack. Sometimes even an older one than the current.
>
> If in doubt just run:
>
> sudo gem install rails
How do I access rack from a rails app?