Basics on importing and exporting CSV Data using Ruby and without gems.

When database tables get large, things can slow down significantly. In this episode, we look at a few things which helps keep databases performant and the client side responsive.

In Ruby on Rails 5.1.0, generated virtual column support was added for MySQL and MariaDB. Using generated and stored columns can leverage heavy calculations to the SQL side.

In this episode we create a Like/Unlike system where users can like posts and use Global ID to obfuscate IDs.

Give early warning to users of form errors before they submit. With client side validations, the user can correct any errors prior to submitting the form.