A tree structure implementation for Mongoid documents using the materialized path pattern.
Mongoid-tree is a Ruby gem that provides tree structure functionality for Mongoid documents using the materialized path pattern. It solves the problem of modeling hierarchical data in MongoDB with Mongoid by offering efficient tree traversal, ordering, and manipulation capabilities. The library enables developers to work with parent-child relationships in document-oriented databases while maintaining performance and flexibility.
Ruby developers using Mongoid with MongoDB who need to model hierarchical data structures like categories, organizational charts, nested comments, or file systems in their applications.
Developers choose Mongoid-tree because it provides a battle-tested, modular implementation of tree structures specifically designed for Mongoid, with efficient materialized path storage, comprehensive traversal methods, and optional features like ordering and custom destruction strategies that aren't available in Mongoid's core functionality.
A tree structure for Mongoid documents using the materialized path pattern
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Implements the materialized path pattern for fast ancestor and descendant queries, enabling performant hierarchical data retrieval without recursive database calls.
Offers a core tree module with optional additions like ordering and traversal, allowing developers to include only needed features and avoid bloat, as highlighted in the philosophy section.
Provides a robust set of methods such as ancestors, descendants, siblings, and leaves for easy tree navigation, detailed in the utility methods and traversal modules.
Includes multiple strategies like nullify, move, or delete for handling child nodes when destroying parents, giving fine-grained control over data integrity and cleanup.
Locked to specific Mongoid versions (e.g., >=4.0, <10.0), with breaking changes requiring version-specific gem installs, complicating upgrades and maintenance.
Lacks built-in validation for parent or children associations, requiring explicit setup with validates_associated, which can lead to data corruption if omitted.
Ordering, traversal, and callbacks require including separate modules and managing callbacks manually, adding setup complexity compared to all-in-one solutions.