At BigBinary we recommend to use rbenv to manage ruby versions.
On terminal execute the following command.
$ brew instal rbenv
At the bottom of the file add
eval "$(rbenv init -)".
Quit terminal and open a new terminal.
ruby intall 2.7.1 to install ruby 2.7.1. This will take sometime.
Please be patient.
rbenv global 2.7.1.
Now you are all set.
In your Rails application you will find a
This file contains the ruby version that the application is using.
When rbenv sees a
.ruby-version file then rbenv reads that ruby version
from that file and sets up to use that version of ruby.