December 2008
Intermediate to advanced
360 pages
8h 21m
English
book
Flex on Rails: Building Rich Internet Applications with Adobe Flex 3 and Rails 2
by Tony Hillerson, Daniel Wanja
Content preview from Flex on Rails: Building Rich Internet Applications with Adobe Flex 3 and Rails 2
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17 Hierarchical Data with RubyAMF
Goal
You want to get some structured, hierarchical data from Rails to Flex using RubyAMF.
Solution
Use a nested set Rails plug-in, such as awesome_nested_set (http://github.com/collectiveidea/awesome_nested_set), and RubyAMF’s method class mapping option to return an object graph to Flex with one call.
Nested Sets
Rails has a few options for storing hierarchical data, and one of them is called “Awesome Nested Set,” which is, you must admit, an awesome name. A Nested Set is a way to store data that maps into a hierarchical, tree-like structure in a database table, which does not natively support hierarchical relationships.
Basically, the idea is to store information about sets that contain ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.