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Informations about the package laravel-hierarchy

laravel-hierarchy

Single root node hierarchy implementation for Laravel

Installation

You can install the package via composer:

composer require sammycorgi/laravel-hierarchy

Publish the config by running the following console command:

php artisan vendor:publish --provider="Sammycorgi\LaravelHierarchy\HierarchyServiceProvider" --tag="config"

If using the EloquentPersister, publish the migration for HierarchyModelChildRecord by running the following console command:

php artisan vendor:publish --provider="Sammycorgi\LaravelHierarchy\HierarchyServiceProvider" --tag="migrations"

Also make sure to set hierarchy.eloquent.default_model in the config to your default HasHierarchy Model if you're going to use the EloquentPersister

Usage

Implement the Contracts\HasHierarchy interface on any Model. For ease, use the Traits\HasHierarchy trait to implement the methods automatically. By default, the ID/Parent ID properties are id and parent_id, respectively. Using this trait, whenever a record is created, deleted or one has its parent_id updated, all affected parents will have their persisted child IDs updated automatically (see below).

Inject (or otherwise instantiate) HierarchyServiceFactory and pass a Model which implements HasHierarchy into the getChildIdsFor() method to return a collection of IDs which belong to children of the passed model. Call the for() method to return a HierarchyService with dependencies automatically resolved. You may also pass arguments to this method to override the default dependencies.

Persisting Child IDs

This package makes use of persistence via the cache (by default) or eloquent for quicker fetching of a model's children. If you wish to implement your own persister, create a new class that implements the Contracts\PersistsHierarchyChildren interface.

The default persister is the CachePersister, but this can be modified in the config. Simply change hierarchy.persisters.default in the config to the value of another key in this array, or change the HIERARCHY_DEFAULT_PERSISTER in your .env file.

Whenever the hierarchy tree is built for a given model, the child IDs will be persisted forever using the CachePersister.

When using the EloquentPersister, the database will be used to persist these child IDs. New records will be added to the hierarchy_model_child_records table that include the model type, the child ID and the parent ID.

Fetching Models

By default, this package uses the EloquentHierarchyInstanceGetter to fetch HasHierarchy models. If you wish to implement your own instance getter, create a new class that implements the Contracts\GetsHierarchyInstances interface.

The default instance getter is the EloquentHierarchyInstanceGetter, but this can be modified in the config. Simply change hierarchy.instance_getters.default in the config to the value of another key in this array.

All versions of laravel-hierarchy with dependencies

PHP Build Version
Package Version
Requires php Version ^8
laravel/framework Version ^8
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