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

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

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docker-compose.yml	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree/blob/master/docker-compose.yml
docker-compose.yml	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree/blob/master/docker-compose.yml
mktree.rb	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree/blob/master/mktree.rb
mktree.rb	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree/blob/master/mktree.rb
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README	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree
MIT license	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#closure-tree
tree data structure	http://en.wikipedia.org/wiki/Tree_%28data_structure%29
	https://patch-diff.githubusercontent.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://patch-diff.githubusercontent.com/ClosureTree/closure_tree#nested-hashes
Find a node by ancestry path	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#find_or_create_by_path
concurrency	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#concurrency
with_advisory_lock	https://github.com/ClosureTree/with_advisory_lock
single-table inheritance (STI)	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#sti
building out heterogeneous hierarchies quickly and conveniently	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#find_or_create_by_path
deterministic ordering	https://patch-diff.githubusercontent.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://patch-diff.githubusercontent.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://patch-diff.githubusercontent.com/ClosureTree/closure_tree#table-of-contents
Installation	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#installation
Warning	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#warning
Usage	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#usage
Accessing Data	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#accessing-data
Polymorphic hierarchies with STI	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#polymorphic-hierarchies-with-sti
Deterministic ordering	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#deterministic-ordering
Concurrency	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#concurrency
Multi-Database Support	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#multi-database-support
FAQ	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#faq
Testing	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#testing
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	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#installation
large number of options	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#available-options
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add a column for deterministic ordering of children	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#deterministic-ordering
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	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#moving-nodes-around-the-tree
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#nested-hashes
ancestry	https://github.com/stefankroes/ancestry#arrangement
elhoyos	https://github.com/ClosureTree/closure_tree/issues/11
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#eager-loading
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#graph-visualization
Graphviz	http://www.graphviz.org/
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	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#available-options
deterministic ordering	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#deterministic-ordering
Ordering Roots	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#ordering-roots
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#accessing-data
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#class-methods
ordered, nested hash	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#nested-hashes
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#instance-methods
ordered, nested hash	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#nested-hashes
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#polymorphic-hierarchies-with-sti
	https://patch-diff.githubusercontent.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://patch-diff.githubusercontent.com/ClosureTree/closure_tree#ordering-roots
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#concurrency
with_advisory_lock	https://github.com/ClosureTree/with_advisory_lock
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#customizing-advisory-lock-names
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#multi-database-support
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#database-specific-behaviors
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#postgresql
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#mysql
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#sqlite
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#configuration
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#testing-with-multiple-databases
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#i18n
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	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#faq
	https://patch-diff.githubusercontent.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://patch-diff.githubusercontent.com/ClosureTree/closure_tree#does-this-work-well-with-default_scope
issue 86	https://github.com/ClosureTree/closure_tree/issues/86
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#can-i-update-parentage-with-update_attribute
	https://patch-diff.githubusercontent.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://patch-diff.githubusercontent.com/ClosureTree/closure_tree#does-this-gem-support-multiple-parents
	https://patch-diff.githubusercontent.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://patch-diff.githubusercontent.com/ClosureTree/closure_tree#there-are-many-lock--files-in-my-project-directory-after-test-runs
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#bundle-install-says-gemextbuilderror-error-failed-to-build-gem-native-extension
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#object-destroy-fails-with-mysql-v57
See the workaround here	https://github.com/ClosureTree/closure_tree/issues/206
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#hierarchy-maintenance-errors-from-mysql-v579-v5710
this issue	https://github.com/ClosureTree/closure_tree/issues/190
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#testing-with-closure-tree
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#testing
tested under every valid combination	https://github.com/ClosureTree/closure_tree/blob/master/.github/workflows/ci.yml
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#change-log
change log	https://github.com/ClosureTree/closure_tree/blob/master/CHANGELOG.md
	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree#thanks-to
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closure_tree: v9.5.0 Latest Jan 21, 2026	https://patch-diff.githubusercontent.com/ClosureTree/closure_tree/releases/tag/closure_tree%2Fv9.5.0
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