GitHub - stefankroes/ancestry: Organise ActiveRecord model into a tree structure

Ancestry Overview Ancestry is a gem that allows rails ActiveRecord models to be organized as a tree structure (or hierarchy). It employs the materialized path pattern which allows operations to be performed efficiently. Features There are a few common ways of storing hierarchical data in a database: materialized path, closure tree table, adjacency lists, nested sets, and adjacency list with recurs

[sasabe]

ツリーっぽいデータを扱うための gem ?

[nagayama]

“Organise ActiveRecord model into a tree structure ”

[suginoy]

ナイーブツリー対策

[fujimogn]

acts_as_tree

[valda]

ancestry すばらしいな