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Informations about the package node-categories

node-categories

Node categories model and observer for laravel 5

Install

 composer require vergil-lai/node-categories

Configure

在你的项目目录config/app.phpproviders数组里加入:

VergilLai\NodeCategories\NodeCategoriesProvider::class

使用说明

运行artisan

创建migration并运行migrate:

$ php artisan node-categories:migration

默认的数据表名是categories,如果需要指定数据表名,需要加上参数--table,例如:

$ php artisan node-categories:migration --table=mytable

创建模型

使用artisan创建模型,例如:

$ php artisan make:model Cateory

然后,让你的模型use trait NodeCategoryTrait

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Category extends Model
{
    use \VergilLai\NodeCategories\NodeCategoryTrait;
}

添加模型观察者

/app/Providers/EventServiceProvider.phpboot方法里添加:

Category::observe(\VergilLai\NodeCategories\Observer::class);

Example

Create

$parent1 = new Category();
$parent1->name = 'Parent 1';
$parent1->save();

$parent2 = new Category();
$parent2->name = 'Parent 2';
$parent2->save();

$parent3 = new Category();
$parent3->name = 'Parent 3';
$parent3->save();

$parent4 = new Category();
$parent4->name = 'Parent 4';
$parent4->save();

$parent5 = new Category();
$parent5->name = 'Parent 5';
$parent5->save();

$child1 = new Category();
$child1->parent_id = $parent1->id;     //把parent_id字段设置为上级分类的id
$child1->name = 'Child 1';
$child1->save();

$child2 = new Category();
$child2->parent_id = $parent1->id;
$child2->name = 'Child 2';
$child2->save();

$child3 = new Category();
$child3->parent_id = $parent1->id;
$child3->name = 'Child 3';
$child3->save();

$grandchild1 = new Category();
$grandchild1->parent_id = $child1->id;
$grandchild1->name = 'Grandchild 1';
$grandchild1->save();

$grandchild2 = new Category();
$grandchild2->parent_id = $child1->id;
$grandchild2->name = 'Grandchild 2';
$grandchild2->save();

结果:

+----+--------+-------+--------------+----------+
| id | parent | level | name         | node     |
+----+--------+-------+--------------+----------+
|  1 |      0 |     1 | Parent 1     | ,1,      |
|  2 |      0 |     1 | Parent 2     | ,2,      |
|  3 |      0 |     1 | Parent 3     | ,3,      |
|  4 |      0 |     1 | Parent 4     | ,4,      |
|  5 |      0 |     1 | Parent 5     | ,5,      |
|  6 |      1 |     2 | Child 1      | ,1,6,    |
|  7 |      1 |     2 | Child 2      | ,1,7,    |
|  8 |      1 |     2 | Child 3      | ,1,8,    |
|  9 |      6 |     3 | Grandchild 1 | ,1,6,9,  |
| 10 |      6 |     3 | Grandchild 2 | ,1,6,10, |
+----+--------+-------+--------------+----------+

Update parent

$child1 = Category::find(6);
$child1->parent_id = 4;        //修改为id为4的子类
$child1->save();

结果:

+----+-----------+-------+--------------+----------+
| id | parent_id | level | name         | node     |
+----+-----------+-------+--------------+----------+
|  1 |         0 |     1 | Parent 1     | ,1,      |
|  2 |         0 |     1 | Parent 2     | ,2,      |
|  3 |         0 |     1 | Parent 3     | ,3,      |
|  4 |         0 |     1 | Parent 4     | ,4,      |
|  5 |         0 |     1 | Parent 5     | ,5,      |
|  6 |         4 |     2 | Child 1      | ,4,6,    |
|  7 |         1 |     2 | Child 2      | ,1,7,    |
|  8 |         1 |     2 | Child 3      | ,1,8,    |
|  9 |         6 |     4 | Grandchild 1 | ,4,6,9,  |
| 10 |         6 |     4 | Grandchild 2 | ,4,6,10, |
+----+-----------+-------+--------------+----------+

Delete

$parent4 = Category::find(4);
$parent4->delete();

结果:

+----+-----------+-------+----------+-------+
| id | parent_id | level | name     | node  |
+----+-----------+-------+----------+-------+
|  1 |         0 |     1 | Parent 1 | ,1,   |
|  2 |         0 |     1 | Parent 2 | ,2,   |
|  3 |         0 |     1 | Parent 3 | ,3,   |
|  5 |         0 |     1 | Parent 5 | ,5,   |
|  7 |         1 |     2 | Child 2  | ,1,7, |
|  8 |         1 |     2 | Child 3  | ,1,8, |
+----+-----------+-------+----------+-------+

Trait Methods

public \Illuminate\Database\Eloquent\Collection childrens(void)

获取所有子分类

$parent1 = Category::find(1);
dd($parent1->childrens());

public \Illuminate\Database\Eloquent\Collection getParent(void)

获取上级分类

$child1 = Category::find(6);
dd($child1->getParent());

You can use BelongTo Relation

$child1 = Category::find(6);
dd($child1->parent);

public \Illuminate\Database\Eloquent\Collection parents(void)

获取所有父分类


public static array getTree(callable $map = null)

public array tree(callable $map = null)

获取树数据结构

$map callable 处理原始数据的map方法,用于集合

$tree = Category::getTree(function($item) {
    $item->title = $item->name;
});


All versions of node-categories with dependencies

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Requires php Version >=5.5.9
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