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Nested Model Form (revised)
Handling multiple models in a single form is easy with accepts_nested_attributes_for. Here you will also learn how to add and remove nested records through JavaScript.
(11 minutes)
Site-Wide Announcements (revised)
Here I show how to add an announcement message at the top of every page in the application and allow the user to permanently hide it. This is all done test-first and even includes testing the JavaScript behavior.
(11 minutes)
Sortable Lists
Creating drag & drop sortable lists is fairly easy using Prototype and the built in helper methods. See how in this episode.
(8 minutes)
Site Wide Announcements
Sometimes you need to display an administrative announcement to every page on the site and give the users the ability to hide the announcement. See how in this episode.
(13 minutes)