Sometimes you will need nearly the same functionality in many actions. [...] There are several ways to deal with this, such as moving the code into a separate function, or an action helper. But in this post, I'm going to introduce so called "generic actions" - parametrized, easy to reuse actions - which is an idea similar to django generic views.

His example takes a generic action - one that grabs and output records from a table - and modifies it to take in parameters from the defining function as to which action/controller/model and ID to use. Then this action can be used over and over in multiple places without having to do any copy and paste coding.