laravel-admin 开发 bootstrap-treeview 扩展包

FranklinIvy 发布于1年前

laravel-admin 扩展开发文档
https://laravel-admin.org/doc...

效果图:

clipboard.png

开发过程:

1、先创建Laravel项目,并集成laravel-admin,教程:

http://note.youdao.com/notesh...

2、生成开发扩展包

php artisan admin:extend csp/cascade --namespace=Csp\Cascade

其中, csp/cascade 是包名, CspCascade 是命名空间,生成的结构如下(删减版):

clipboard.png

3、删除没必要的目录,以及添加CSS、JS资源

clipboard.png

4、修改CascadeServiceProvider
4.1、修改视图的命名空间

if ($views = $extension->views()) {
    $this->loadViewsFrom($views, 'laravel-admin-cascade');
}

4.2、修改资源发布的位置,这里将资源发布到/public/vendor/laravel-admin-ext/cascade 目录下。

if ($this->app->runningInConsole() && $assets = $extension->assets()) {
    $this->publishes(
        [$assets => public_path('vendor/laravel-admin-ext/cascade')],
        'laravel-admin-cascade'
    );
}

4.3、编写视图文件,在views/目录下创建 cascade.blade.php

clipboard.png

<div class="form-group {!! !$errors->has($label) ?: 'has-error' !!}">
    <label for="{{$id}}" class="col-sm-2 control-label">{{$label}}</label>
    <div class="{{$viewClass['field']}}">
        @include('admin::form.error')
        <div id="csp-bootstrap-tree"></div>
        <input type="hidden" name="{{$id}}" id="{{$id}}">
        @include('admin::form.help-block')
    </div>
</div>

4.4、编写 CascadeTreeView 继承 Field

<?php
/**
 * Created by PhpStorm.
 * User: chenshaoping
 * Date: 2019/2/10
 * Time: 10:02
 */

namespace App\Admin\Extensions\csp\cascade\src;


use Encore\Admin\Form\Field;

class CascadeTreeView extends Field
{
     
    protected $view = 'laravel-admin-cascade::cascade';

    protected static $css = [
        '/vendor/laravel-admin-ext/cascade/bootstrap-treeview.min.css'
    ];

    protected static $js = [
        '/vendor/laravel-admin-ext/cascade/bootstrap-treeview.min.js'
    ];
    public function render()
    {
        $this->script = <<<EOT
        var set = new Set();
var tree = [
  {
    text:"Parent 1",
    id:1,
    nodes: [
      {
        text:"Child 1",
        id:2,
        nodes: [
          {
            text:"Grandchild 1",
            id:3,
            nodes: [
                {
                    text:"122",
                    id:4,
                    nodes: [
                        {
                        text:"qweqw",
                        id:5,
                        }
                    ]
                }
            ],
          },
          {
            text:"Grandchild 2",
            id:6,
          }
        ]
      },
      {
        text:"Child 2",
        id:7,
      }
    ]
  },
  {
    text:"Parent 2",
    id:8,
  },
  {
    text:"Parent 3",
    id:9,
  },
  {
    text:"Parent 4",
    id:10,
  },
  {
    text:"Parent 5",
    id:11,
  }
]; 
$('#csp-bootstrap-tree').treeview({data: tree, showIcon: false,showCheckbox: true,'showTags':true});
$('#csp-bootstrap-tree').on('nodeChecked', function(event,node) {
    set.add(node.id);
    $('#{$this->id}').val(Array.from(set).toString());
});
$('#csp-bootstrap-tree').on('nodeUnchecked', function(event,node) {
    set.delete(node.id);
    $('#{$this->id}').val(Array.from(set).toString());
});
EOT;
        return parent::render();
    }
}

4.5、在laravel-admin 启动时,添加资源,添加扩展Form

Admin::booting(function () {
    Admin::js('vendor/laravel-admin-ext/cascade/bootstrap-treeview.min.js');
    Admin::css('vendor/laravel-admin-ext/cascade/bootstrap-treeview.min.css');
    Form::extend('cascade', CascadeTreeView::class);
});


5、准备本地安装

5.1、此时如果输入

composer require csp/cascade 

会报以下错误

Could not find a version of package laravel-admin-ext/cascade matching your minimum-stability (stable). Require it with an
explicit version constraint allowing its desired stability.

原因很简单,composer的最小稳定性设置不满足,require 需要的是稳定版本,我们这里的确实 dev的版本;这里有2种解决方式:
1、修改项目的composer.json

"minimum-stability": "dev",
"prefer-stable": true,


2、修改扩展包的composer.json

"version": "1.0.0",

5.2、开始本地安装

composer require csp/cascade

5.3、发布资源

php artisan vendor:publish --provider="Csp\Cascade\CascadeServiceProvider"

此时会看到在 public/vendor/laravel-admin-ext/cascade 目录下面有静态资源。

6、使用

$form->cascade('parent_id','权限')->help('陈少平');

提交表单的时候,会将 parent_id 以 ,(逗号) 分割提交所有被选中的值。

查看原文: laravel-admin 开发 bootstrap-treeview 扩展包

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