tags:

views:

253

answers:

2
+2  Q: 

Best way to implement Categories and Subcategories with flexible depth in Rails?

Hi. I have a Category and Subcategory models in my project. I would like to have many sub-levels in a flexible way. I thought making a self referential "parent" foreign key but I'm not quite sure how to do it. Any ideas? Thanks!

Cat1
    Sub1
        SubSub1
        SubSub2
    Sub2
Cat2
    Sub1
Cat3
    Sub1
    Sub2
        SubSub1
+2  A: 

Try the acts_as_tree plug-in

Tony Fontenot  2010-04-20 15:42:17
I also found this: http://github.com/rails/acts_as_nested_set
benoror  2010-04-20 15:55:33
+2  A: 

Awesome_nested_set is the best solution, imo, for these types of structures in rails. http://github.com/collectiveidea/awesome_nested_set

Peer Allan  2010-04-20 18:09:40
Agreed. It's nasty when it comes to writes, but when it comes to reads, it kicks ass. You can get the whole tree structure with one query.
changelog  2010-04-21 12:40:05

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