recreant wrote:
> I have two models that are playing nicely together. The first is the
> Category model that uses acts_as_tree to create a hierarchy of
> categories based on parent_id. Example:
> 
> Category 1
>       Sub 1
>       Sub 2
>               Subsub 1
>                       Subsubsub 1
>               Subsub 2
>       Sub 3
> Category 2
> Category 3
> 
> Etc...
> 
> The second is a Listings model that has a many-to-many relationship to
> the Categories model using has_many :through
> 
> So here's my question: How would I go about finding all of the
> listings in "Sub 2" AND below?
> 
> Doing a find for the listings that belong to Sub 2 is obviously very
> easy, but what about including subsub 1, subsubsub1, and subsub 2 and
> returning all tof the results in one instance object (like
> @listings)?
> 
> Any general idea of how to go about this would be helpful. I'm pretty
> new at this so I hope i'm clear enough in my explanation. Thanks!

You should add nested-set capability to the model:
   http://github.com/chris/better_nested_set/tree/master
   http://github.com/collectiveidea/awesome_nested_set/tree/master


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