In this episode, we create a tagging system for models that is highly reusable. We'll explore creating the tagging system, filtering on tags and persisting the tags in an unobtrusive way.

In this episode, we'll explore the process of creating Previous and Next links for a record, but then refactor it to be more maintainable.

The provided ActiveRecord counter caching mechanism provides some great basic functionality, but quickly becomes insufficient if you need more complex totaling or summing of records. In this episode, we'll look at implementing the counter_culture gem to gain extra functionality.

In this episode, we look at refactoring a model with a few different approaches; modules, classes and concerns. We'll explore each implementation and when I'd use one over the other.

In this episode, we look at making records read-only and also creating an override functionality where we can force the record to save. We'll also look at error handling when a record update is made to a read-only record.