Ancestry
pluck_all
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| Ancestry | pluck_all | |
|---|---|---|
| 6 | - | |
| 3,681 | 101 | |
| - | - | |
| 5.8 | 6.1 | |
| about 2 months ago | 4 months ago | |
| Ruby | Ruby | |
| MIT License | MIT License |
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For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Ancestry
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SQL help me please with multi nested childs
Making some guesses about what you’re trying to do, you’ll have to alter the table schema to do this efficiently. The ‘ancestry’ gem (https://github.com/stefankroes/ancestry ) can do the migration and update your parent_id-based data to enable all its cool features.
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Active record: how to recursively load children of children of children in one query?
Another gem that stores trees and can get a whole sub tree with one query is ancestry: https://github.com/stefankroes/ancestry
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Hierarchical data
Ancestry gem is what I always use for hiarichle data structures: https://github.com/stefankroes/ancestry If I understand what your looking for, it does pretty much exactly what you want.
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How to query Ancestry fast
Ancestry is a great library to organize models in a tree structure.
- Find all objects of a chain of associations on the same table
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26 most popular Ruby/Rails repositories on GitHub in July-August 2020
Ancestry is a gem that allows the records of a Ruby on Rails ActiveRecord model to be organized as a tree structure (or hierarchy). It employs the materialized path pattern and exposes all the standard tree structure relations (ancestors, parent, root, children, siblings, descendants), allowing all of them to be fetched in a single SQL query. 3,136 stars by now
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Tracking mentions began in Dec 2020.
What are some alternatives?
Closure Tree - Easily and efficiently make your ActiveRecord models support hierarchies
Apartment - Database multi-tenancy for Rack (and Rails) applications
Awesome Nested Set - An awesome replacement for acts_as_nested_set and better_nested_set.
marginalia - Attach comments to ActiveRecord's SQL queries
ActsAsTree - ActsAsTree -- Extends ActiveRecord to add simple support for organizing items into parent–children relationships.
ActsAsTaggableOn - A tagging plugin for Rails applications that allows for custom tagging along dynamic contexts.
rails_or - Cleaner syntax for writing OR Query in Rails 5, 6. And also add #or support to Rails 3 and 4.
ActiveRecord::Turntable - ActiveRecord Sharding Plugin
Mongoid Tree - A tree structure for Mongoid documents using the materialized path pattern
BabySqueel - :pig: An expressive query DSL for Active Record
counter_culture - Turbo-charged counter caches for your Rails app.
Hightop - A nice shortcut for group count queries