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ActiveYii2-extension

superlyons/mptt
===============

MPTT; Modified Preorder Tree Traversal PHP Code Implement.

34PHP

Since Mar 6Pushed 9y ago2 watchersCompare

[ Source](https://github.com/superlyons/mptt)[ Packagist](https://packagist.org/packages/superlyons/mptt)[ RSS](/packages/superlyons-mptt/feed)WikiDiscussions master Synced 2mo ago

READMEChangelogDependenciesVersions (1)Used By (0)

MPTT Manage for Yii 2
=====================

[](#mptt-manage-for-yii-2)

GUI Manage MPTT (Modified Preorder Tree Traversal) for Yii2. 😄.

> 这是\*\*<Joe Celko's Trees And Hierarchies In SQL For Smarties>\**一书中第4章* Nested Set Model Of Hierarchis \*的一个实现

[![Mptt Nested](/images/1.jpg)](/images/1.jpg)[![Mptt Tree](/images/2.jpg)](/images/2.jpg)

学名: 预排序遍历树算法(modified preorder tree traversal algorithm)

几乎每个应用都离不开"树"数据结构, Mptt的优点在于可以非常快速的查找嵌套层级关系, 而无惧层级的深度!

这是一个Yii2-Extension, 它不仅实现了MPTT算法还提供了:

- 对Mptt树的完整管理: 增删改查 和 Mptt树视图
- 提供了Mptt Widget类. 以方便你在别处使用!
- 提供支持Yii RBAC的助手类, 将Mptt与权限结合. 例如你可以很方便的返回当前登录用户可访问的Mptt节点
- 使用`superlyons\idGenerator`生成ID

你可以在Github上找到类似的实现, 但是它们仅仅实现了算法(通过Behavior), 没有提供完善的管理和应用功能, 要想将它们应用到你的项目中还需要做大量的工作. 而且算法有一些问题, 例如只更新当前节点实例(例如改变lft和rgt值)而不考虑其它已获得的节点实例, 你必须很小心的使用否则将导致错误! 而在本扩展中没有此类问题.

Installation
------------

[](#installation)

### Install With Composer

[](#install-with-composer)

安装这个扩展的首选方式是通过 [composer](http://getcomposer.org/download/).

```
php composer.phar require superlyons/mptt "dev-master"

```

或者, 你也可以添加下面的代码到你的`composer.json`文件中

```
"superlyons/mptt": "dev-master"

```

### Install MpttTable

[](#install-mptttable)

```
yii migrate --migrationPath=@superlyons/mptt/migrations

```

###  Health Score

21

—

LowBetter than 19% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity7

Limited adoption so far

Community8

Small or concentrated contributor base

Maturity41

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window.

**Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores.

**Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement.

**Maturity (30%)** — Project age, version count, PHP version support, and release stability.

### Community

Maintainers

![](https://www.gravatar.com/avatar/3f4c7e3bbfc5827dd8d196c6cd87c9c7d2062e0a525a431be0f33025bcb43804?d=identicon)[superlyons](/maintainers/superlyons)

---

Top Contributors

[![superlyons](https://avatars.githubusercontent.com/u/7761973?v=4)](https://github.com/superlyons "superlyons (2 commits)")

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