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Polymorphic Association (revised)
A polymorphic association allows a model to belong_to different types of other models. Here I show how to make a single comment model belong to articles, photos, and events.
(11 minutes)
Destroy without JavaScript (revised)
A destroy link in Rails does not work without JavaScript. In this episode I show two techniques for gracefully degrading destroy links: button_to and a delete action.
(8 minutes)
Edit Multiple
Use checkboxes to select multiple records and edit them all in one form as shown in this episode. With virtual attributes you can even edit values relatively!
(14 minutes)
Polymorphic Association
Polymorphic associations can be perplexing. In this episode I show you how to set it up in Active Record and then move to the controller and view layer.
(8 minutes)
Nested Resources
In this episode I show how to nest resources through routing and go into some new additions in Rails 2.2.
(10 minutes)
Beta Invitations
You know those invitation systems where a given user can invite a number of other people to join? That's what I show you how to make in this episode.
(22 minutes)