Howtoforge published a tutorial about setting up Ruby on Rails with a PostgreSQL database on Ubuntu 20.04 LTS.
How to Install Ruby on Rails on Ubuntu 20.04 LTS
In this tutorial, I will show you how to install Ruby on Rails on Ubuntu 20.04 LTS. We will show you how to install and configure Rails with a PostgreSQL database..
How to Install Ruby on Rails on Ubuntu 20.04 LTS