When your app is using Paranoia, calling destroy on an ActiveRecord object doesn't actually destroy the database record, but just hides it.

Wouldn't it be awesome if ActiveRecord didn't make you think about eager loading and it just did the "right" thing by default? With Goldiloader it can!

When displaying a count of records, this will generate extra SQL Queries. Learn how to reduce the number of SQL queries called with counter caching the number of associated records.

Store multiple attributes and values using a text column. Not for everyday use, but has situations where it can save on the number of columns and/or models needed to accomplish a task.

This is a Rails library which integrates with Active Records and provides some awesome user-initiated string interpolations for your web apps. For example, have you ever needed to allow users to insert their own variables into e-mail templates or messages?