如何Laravel类别

本文介绍了如何Laravel类别-子类别的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

你好，我有一个新项目.我想在这个项目中建立一个多类别的系统. 例子 类别 -子类别 -子子类别 -subsubsubsubcategory -subsubsubsubsubcategory -subsubsubcategory. 等等.

Hello there I have a new project. I would like to build a multi-category system in this project. Example Category -Subcategory -Sub sub category -Subsubsubcategory -Subsubsubsubcategory -Subsubsubcategory. and so on..

我使用laravel 5.4版本.怎么做?

I use laravel 5.4 version. How to make this?

推荐答案

制作一个Category模型和一个附带的表.在表中添加parent_id.现在，我们假设您具有以下类别:

Make a Category Model and a table that goes with. In the table add parent_id. Now you let's assume you have these categories:

Name id parent_id cat1 1 NULL cat2 2 1 cat3 3 2 cat4 4 3

您知道了，现在cat4是cat3的子类别，而cat3是cat2的子类别，而cat2是cat1的子类别.

You get it, now cat4 is a subcategory of cat3 which is a sub of cat2 which is a sub of cat1.

您可以在模型中完成

public function parent() { return $this->belongsTo('App\Category', 'parent_id'); get parent category } public function children() { return $this->hasMany('App\Category', 'parent_id'); //get all subs. NOT RECURSIVE }

尝试一下，看看效果如何.

Give this a try and see how it goes.