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Package yii2-nested-sets
Short Description Nested Sets Behavior for Yii2
License MIT
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Informations about the package yii2-nested-sets
Yii2 Nested Sets Behavior
Implementation of nested sets algorithm for storing the trees in DB tables.
Install
Install via Composer:
or add
to the require section of your composer.json file.
Migrations example
Warning! depth attribute can not be unsigned!
Single tree migration:
Multiple tree migration:
Configuring
Optional you can setup Query for finding roots:
Query class:
Options
$treeAttribute = null- setup tree attribute for multiple tree in table schema.$leftAttribute = 'lft'- left attribute in table schema.$rightAttribute = 'rgt'- right attribute in table schema.$depthAttribute = 'depth'- depth attribute in table schema (note: it must be signed int).
Usage
Selection
Getting the root nodes
If you connect NestedSetsQueryTrait, you can get all the root nodes:
Getting ancestors of a node
To get ancestors of a node:
To get parent of a node:
To get root of a node:
Getting descendants of a node
To get all the descendants of a node:
To populate children relations for self and descendants of a node:
To get the children of a node:
Getting the leaves nodes
To get all the leaves of a node:
Getting the neighbors nodes
To get the next node:
To get the previous node:
Some checks
Modifications
To make a root node:
Note: if you allow multiple trees and attribute tree is not set, it automatically takes the primary key value.
To prepend a node as the first child of another node:
To append a node as the last child of another node:
To insert a node before another node:
To insert a node after another node:
To delete a node with descendants:
