Rails 3 Tree Data Structure

I have bees searching for a good solution for Tree Data Structure in Rails 3. I'm trying to build a Tree menu. What do you use and what wou开发者_如何学运维ld you recommend?

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Ancestry is an excellent ActiveRecord gem that allows you to define tree structures.

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this looks like the chosen gem for the task.

for use examples, go to railscasts episode about ancestry