In order to configure Ruby on Rails to create your web application with PostgreSQL as a database, you will first install the database onto your machine. Under the Binary Distributions/Core section, use the. This guide will show you how to install PostgreSQL, the easy way, on a Mac. 2 (released April 22, 2021) pgAdmin 4 v5. You should be able to use following command without error: Command: mkvirtualenv test-env test-env should have been created and activated. $ rails new my-app -database = postgresql -webpack = react. How To Install Moodle (Windows And Mac) eLearning Industry. Let’s go ahead and start Postgres running, and make sure Postgres starts every time your computer starts up. During the download process, you can see the remaining time of the download. How to install postgresql on mac catalina 7. How to install postgresql on mac catalina