In this episode, we look at the encoding and some problems that an older Ruby on Rails application may face when it comes to storing emojis and how to fix them.

DropzoneJS is an open source library that provides drag’n’drop file uploads with image previews. It's lightweight, highly customizable and doesn't have any dependencies.

Continuing from the previous episode, we add testing to the Stripe Payments without adding any additional dependencies.

The past tutorials look at creating subscriptions with Stripe, but in this episode, we look at using Stripe for a cart-like checkout system where nonrecurring orders can be placed.

The hstore data type is very useful in many cases, such as semi-structured data or rows with many attributes.