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Title: GitHub - ClosureTree/closure_tree: Easily and efficiently make your ActiveRecord models support hierarchies · GitHub

Open Graph Title: GitHub - ClosureTree/closure_tree: Easily and efficiently make your ActiveRecord models support hierarchies

X Title: GitHub - ClosureTree/closure_tree: Easily and efficiently make your ActiveRecord models support hierarchies

Description: Easily and efficiently make your ActiveRecord models support hierarchies - ClosureTree/closure_tree

Open Graph Description: Easily and efficiently make your ActiveRecord models support hierarchies - ClosureTree/closure_tree

X Description: Easily and efficiently make your ActiveRecord models support hierarchies - ClosureTree/closure_tree

Opengraph URL: https://github.com/ClosureTree/closure_tree

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closure_tree	https://github.com/ClosureTree/closure_tree
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README	https://github.com/ClosureTree/closure_tree
MIT license	https://github.com/ClosureTree/closure_tree
	https://github.com/ClosureTree/closure_tree#closure-tree
tree data structure	http://en.wikipedia.org/wiki/Tree_%28data_structure%29
	https://github.com/ClosureTree/closure_tree#closure_tree-lets-your-activerecord-models-act-as-nodes-in-a-tree-data-structure
	https://github.com/ClosureTree/closure_tree/actions/workflows/ci.yml
	https://badge.fury.io/rb/closure_tree
ancestry	https://github.com/stefankroes/ancestry
acts_as_tree	https://github.com/amerine/acts_as_tree
awesome_nested_set	https://github.com/collectiveidea/awesome_nested_set/
descendants as a nested hash	https://github.com/ClosureTree/closure_tree#nested-hashes
Find a node by ancestry path	https://github.com/ClosureTree/closure_tree#find_or_create_by_path
concurrency	https://github.com/ClosureTree/closure_tree#concurrency
with_advisory_lock	https://github.com/ClosureTree/with_advisory_lock
single-table inheritance (STI)	https://github.com/ClosureTree/closure_tree#sti
building out heterogeneous hierarchies quickly and conveniently	https://github.com/ClosureTree/closure_tree#find_or_create_by_path
deterministic ordering	https://github.com/ClosureTree/closure_tree#deterministic-ordering
preordered	http://en.wikipedia.org/wiki/Tree_traversal#Pre-order
DOT format	http://en.wikipedia.org/wiki/DOT_(graph_description_language)
Graphviz	http://www.graphviz.org/
test coverage	https://github.com/ClosureTree/closure_tree#testing
Bill Karwin	http://karwin.blogspot.com/
Models for hierarchical data presentation	http://www.slideshare.net/billkarwin/models-for-hierarchical-data
	https://github.com/ClosureTree/closure_tree#table-of-contents
Installation	https://github.com/ClosureTree/closure_tree#installation
Warning	https://github.com/ClosureTree/closure_tree#warning
Usage	https://github.com/ClosureTree/closure_tree#usage
Accessing Data	https://github.com/ClosureTree/closure_tree#accessing-data
Polymorphic hierarchies with STI	https://github.com/ClosureTree/closure_tree#polymorphic-hierarchies-with-sti
Deterministic ordering	https://github.com/ClosureTree/closure_tree#deterministic-ordering
Concurrency	https://github.com/ClosureTree/closure_tree#concurrency
Multi-Database Support	https://github.com/ClosureTree/closure_tree#multi-database-support
FAQ	https://github.com/ClosureTree/closure_tree#faq
Testing	https://github.com/ClosureTree/closure_tree#testing
Change log	https://github.com/ClosureTree/closure_tree#change-log
	https://github.com/ClosureTree/closure_tree#installation
large number of options	https://github.com/ClosureTree/closure_tree#available-options
warning section	https://github.com/ClosureTree/closure_tree#warning
add a column for deterministic ordering of children	https://github.com/ClosureTree/closure_tree#deterministic-ordering
	https://github.com/ClosureTree/closure_tree#warning
	https://github.com/ClosureTree/closure_tree#usage
	https://github.com/ClosureTree/closure_tree#creation
	https://github.com/ClosureTree/closure_tree#find_or_create_by_path
	https://github.com/ClosureTree/closure_tree#moving-nodes-around-the-tree
	https://github.com/ClosureTree/closure_tree#nested-hashes
ancestry	https://github.com/stefankroes/ancestry#arrangement
elhoyos	https://github.com/ClosureTree/closure_tree/issues/11
	https://github.com/ClosureTree/closure_tree#eager-loading
	https://github.com/ClosureTree/closure_tree#graph-visualization
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	https://camo.githubusercontent.com/2efe891f113e45dc375a0379ca57a920ac9907e5836a84218537da70db3985d0/68747470733a2f2f7261772e6769746875622e636f6d2f436c6f73757265547265652f636c6f737572655f747265652f6d61737465722f696d672f6578616d706c652e706e67
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	https://github.com/ClosureTree/closure_tree#available-options
deterministic ordering	https://github.com/ClosureTree/closure_tree#deterministic-ordering
Ordering Roots	https://github.com/ClosureTree/closure_tree#ordering-roots
Lock wait timeouts	https://github.com/ClosureTree/with_advisory_lock?tab=readme-ov-file#lock-wait-timeouts
	https://github.com/ClosureTree/closure_tree#accessing-data
	https://github.com/ClosureTree/closure_tree#class-methods
ordered, nested hash	https://github.com/ClosureTree/closure_tree#nested-hashes
	https://github.com/ClosureTree/closure_tree#instance-methods
ordered, nested hash	https://github.com/ClosureTree/closure_tree#nested-hashes
	https://github.com/ClosureTree/closure_tree#polymorphic-hierarchies-with-sti
	https://github.com/ClosureTree/closure_tree#deterministic-ordering
pre-ordered	http://en.wikipedia.org/wiki/Tree_traversal#Pre-order
pre-ordered	http://en.wikipedia.org/wiki/Tree_traversal#Pre-order
	https://github.com/ClosureTree/closure_tree#ordering-roots
	https://github.com/ClosureTree/closure_tree#concurrency
with_advisory_lock	https://github.com/ClosureTree/with_advisory_lock
	https://github.com/ClosureTree/closure_tree#customizing-advisory-lock-names
	https://github.com/ClosureTree/closure_tree#per-instance-lock-names-multi-tenant--scoped-models
	https://github.com/ClosureTree/closure_tree#multi-database-support
	https://github.com/ClosureTree/closure_tree#database-specific-behaviors
	https://github.com/ClosureTree/closure_tree#postgresql
	https://github.com/ClosureTree/closure_tree#mysql
	https://github.com/ClosureTree/closure_tree#sqlite
	https://github.com/ClosureTree/closure_tree#configuration
	https://github.com/ClosureTree/closure_tree#testing-with-multiple-databases
	https://github.com/ClosureTree/closure_tree#i18n
I18n	http://guides.rubyonrails.org/i18n.html
	https://github.com/ClosureTree/closure_tree#faq
	https://github.com/ClosureTree/closure_tree#are-there-any-how-to-articles-on-how-to-use-this-gem
Ilya Bodrov	https://github.com/bodrovis
Nested Comments with Rails	http://www.sitepoint.com/nested-comments-rails/
	https://github.com/ClosureTree/closure_tree#does-this-work-well-with-default_scope
issue 86	https://github.com/ClosureTree/closure_tree/issues/86
	https://github.com/ClosureTree/closure_tree#can-i-update-parentage-with-update_attribute
	https://github.com/ClosureTree/closure_tree#can-i-assign-a-parent-to-multiple-children-with--update_all
issue 197	https://github.com/ClosureTree/closure_tree/issues/197
	https://github.com/ClosureTree/closure_tree#does-this-gem-support-multiple-parents
	https://github.com/ClosureTree/closure_tree#how-do-i-use-this-with-test-fixtures
Lots of people have written about this already	https://www.google.com/search?q=fixtures+versus+factories
	https://github.com/ClosureTree/closure_tree#there-are-many-lock--files-in-my-project-directory-after-test-runs
	https://github.com/ClosureTree/closure_tree#bundle-install-says-gemextbuilderror-error-failed-to-build-gem-native-extension
	https://github.com/ClosureTree/closure_tree#object-destroy-fails-with-mysql-v57
See the workaround here	https://github.com/ClosureTree/closure_tree/issues/206
	https://github.com/ClosureTree/closure_tree#hierarchy-maintenance-errors-from-mysql-v579-v5710
this issue	https://github.com/ClosureTree/closure_tree/issues/190
	https://github.com/ClosureTree/closure_tree#testing-with-closure-tree
	https://github.com/ClosureTree/closure_tree#testing
tested under every valid combination	https://github.com/ClosureTree/closure_tree/blob/master/.github/workflows/ci.yml
	https://github.com/ClosureTree/closure_tree#change-log
change log	https://github.com/ClosureTree/closure_tree/blob/master/CHANGELOG.md
	https://github.com/ClosureTree/closure_tree#thanks-to
changelog	https://github.com/ClosureTree/closure_tree/blob/master/CHANGELOG.md
https://github.com/collectiveidea/awesome_nested_set	https://github.com/collectiveidea/awesome_nested_set
https://github.com/patshaughnessy/class_factory	https://github.com/patshaughnessy/class_factory
open-source license	http://www.jetbrains.com/ruby/buy/buy.jsp#openSource
RubyMine	http://www.jetbrains.com/ruby/features/
closuretree.github.io/closure_tree/	http://closuretree.github.io/closure_tree/
ruby	https://github.com/topics/ruby
rails	https://github.com/topics/rails
activerecord	https://github.com/topics/activerecord
parent	https://github.com/topics/parent
child	https://github.com/topics/child
ancestry	https://github.com/topics/ancestry
tree-structure	https://github.com/topics/tree-structure
hierarchy	https://github.com/topics/hierarchy
nested-set	https://github.com/topics/nested-set
hierarchies	https://github.com/topics/hierarchies
closure-tree	https://github.com/topics/closure-tree
nested-hashes	https://github.com/topics/nested-hashes
descendants	https://github.com/topics/descendants
Readme	https://github.com/ClosureTree/closure_tree#readme-ov-file
MIT license	https://github.com/ClosureTree/closure_tree#MIT-1-ov-file
Please reload this page	https://github.com/ClosureTree/closure_tree
Activity	https://github.com/ClosureTree/closure_tree/activity
Custom properties	https://github.com/ClosureTree/closure_tree/custom-properties
247 forks	https://github.com/ClosureTree/closure_tree/forks
Report repository	https://github.com/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2FClosureTree%2Fclosure_tree&report=ClosureTree+%28user%29
Releases 10	https://github.com/ClosureTree/closure_tree/releases
closure_tree: v9.7.0 Latest May 6, 2026	https://github.com/ClosureTree/closure_tree/releases/tag/closure_tree%2Fv9.7.0
+ 9 releases	https://github.com/ClosureTree/closure_tree/releases
Packages 0	https://github.com/orgs/ClosureTree/packages?repo_name=closure_tree
Please reload this page	https://github.com/ClosureTree/closure_tree
Please reload this page	https://github.com/ClosureTree/closure_tree
Contributors	https://github.com/ClosureTree/closure_tree/graphs/contributors
Please reload this page	https://github.com/ClosureTree/closure_tree
Ruby 99.7%	https://github.com/ClosureTree/closure_tree/search?l=ruby
HTML 0.3%	https://github.com/ClosureTree/closure_tree/search?l=html
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