ruby on rails - What is the best way to implement categories and sub categories similar to Kijiji? -

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i know there acts_as_taggable_on great, if want sub-categories on kijiji.

i'm wondering best way this? there gem this?

the gem actsastree extends activerecord add support organizing items parent–children relationships, allow create categories , sub-categories.

it's compatible rails 3.00 , forward.


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