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Example code of besnovatyj/yii2-nested-sets

Informations about the package yii2-nested-sets

besnovatyj/yii2-nested-sets

Nested Sets ядро для Yii2: операции над деревом без behavior-методов на AR-моделях и без привязки к конкретному модулю. Multi-tree (tree-колонка), глубина (depth), опциональная сортировка корней отдельной колонкой (sort_order).

Выделено из besnovatyj/yii2-cms-tree-manager (фаза 3 плана разделения — TODO.MD того пакета). Tree-manager — фасад работы с деревом; этот пакет — одна из реализаций (абстракция «других подходов» — materialized path и т.п. — появится отдельной фазой, когда возникнет вторая реализация).

Состав

Класс Роль
NestedSetsService Высокоуровневые операции: create (root/prepend/append/before/after), move (включая makeRoot и сортировку корней moveRootBefore/After/ToFirst/ToLast/ToPosition, swapRoots, reindexRoots), delete (deleteWithChildren / deletePromotingChildren / deleteLeaf). Все операции — в транзакции.
NestedSetsRepository Низкоуровневая работа с БД: выборки (roots/parents/descendants/children/leaves/prev/next), предикаты (isRoot/isLeaf/isChildOf), populateTree, сдвиги lft/rgt (shift), вставка/перемещение/удаление на уровне запросов.
NestedSetsColumnMap Карта структурных колонок (lft/rgt/depth/tree/sort) — имена не хардкодятся; по ней же определяется, какие атрибуты модели «структурные», а какие — пользовательские.
NestedSetsException Доменное исключение (нарушение инвариантов дерева: второй корень в single-tree, вставка before/after корня, перемещение в собственного потомка и т.п.). В фасаде маппится на HTTP 422.

Использование

Требования к таблице: lft/rgt/depth (имена настраиваются), при multi-tree — колонка дерева, при сортируемых корнях — колонка сортировки у корней.

Контракты

Связанные пакеты

License

MIT — см. LICENSE. Автор: Besnovatyj.

All versions of yii2-nested-sets with dependencies

PHP Build Version
Package Version
Requires php Version >=8.4
yiisoft/yii2 Version ~2.0.0
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