Rapid Web Applications with TurboGears: Using Python to Create Ajax-Powered Sites

Chapter 5.5. Selecting Categories

It’s not complicated to add another widget to our form which displays and updates categories for us. There are several ways to do this: We can use a list of check boxes, a series of clickable links, or some kind of Ajaxified Web 2.0 drag-and-drop interface. But, our users probably already know how to use a multiple select field, and it’s easy to add, so let’s start with that.

We’ll do this in two phases. The first is the easiest; we wire up the widget into our form and make it display the existing categories for each of the bookmarks in our database. The second part, which is really not difficult either, is to update the contents of our database based on the user’s selection.

So far, the only thing ...