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vue-admin-template树形组件的应用

wxchong 2024-06-22 20:44:08 开源技术 12 ℃ 0 评论 
<template>
<div class="container">
<div class="app-container">
<!-- 展示树形 -->
<el-tree :data="depts" default-expand-all :props="defaultProps" @node-click="handleNodeClick" />

</div>
</div>
</template>
<script>
export default {
        name: 'Department',
        data() {
        return {
        depts: [{
        name: '一级 1',
        children: [{
        name: '二级 1-1',
        children: [{
        name: '三级 1-1-1'
        }]
        }]
        }, {
        name: '一级 2',
        children: [{
        name: '二级 2-1',
        children: [{
        name: '三级 2-1-1'
        }]
        }, {
        name: '二级 2-2',
        children: [{
        name: '三级 2-2-1'
        }]
        }]
        }, {
        name: '一级 3',
        children: [{
        name: '二级 3-1',
        children: [{
        name: '三级 3-1-1'
        }]
        }, {
        name: '二级 3-2',
        children: [{
        name: '三级 3-2-1'
        }]
        }]
        }], // 数据属性
        defaultProps: {
        children: 'children',
        label: 'name'
        }
        }
        },
        methods: {
        handleNodeClick(data) {
        console.log(data)
        }
        }
        }
</script>

1.树形自定义结构

<template>
<div class="container">
<div class="app-container">
<!-- 展示树形 -->
<el-tree :data="depts" default-expand-all :props="defaultProps" @node-click="handleNodeClick">
<el-row type="flex" style="width: 100%;height: 40px;" justify="space-between" align="middle">
<el-col>教育</el-col>
<el-col :span="4">
<span class="tree-manager">管理员</span>
<!-- $event 实参 表示类型 -->
<el-dropdown>
<!-- 显示区域内容 -->
<span class="el-dropdown-link">
        操作<i class="el-icon-arrow-down el-icon--right" />
</span>
<!-- 下拉菜单选项 -->
<el-dropdown-menu slot="dropdown">
<el-dropdown-item command="add">添加子部门</el-dropdown-item>
<el-dropdown-item command="edit">编辑部门</el-dropdown-item>
<el-dropdown-item command="del">删除</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
</el-col>
</el-row>
</el-tree>

</div>
</div>
</template>
<script>
export default {
        name: 'Department',
        data() {
        return {
        depts: [{
        name: '一级 1',
        children: [{
        name: '二级 1-1'
        }, {
        name: '二级 1-2'
        }]
        }, {
        name: '一级 2',
        children: [{
        name: '二级 2-1'
        }, {
        name: '二级 2-2',
        children: [{
        name: '三级 2-2-1'
        }]
        }]
        }, {
        name: '一级 3',
        children: [{
        name: '二级 3-1',
        children: [{
        name: '三级 3-1-1'
        }]
        }, {
        name: '二级 3-2',
        children: [{
        name: '三级 3-2-1'
        }]
        }]
        }], // 数据属性
        defaultProps: {
        children: 'children',
        label: 'name'
        }
        }
        },
        methods: {
        handleNodeClick(data) {
        console.log(data)
        }
        }
        }
</script>
<style scoped>
.app-container {
        padding: 30px 140px;
        font-size: 14px;
        }
        .tree-manager {
        width: 50px;
        display: inline-block;
        margin: 10px;
        }
</style>


2.节点数据的展示

使用作用域插槽，v-slot="{ node, data }" 只能作用在template上，因此用template标签包裹el-row.

data数据形式如下

添加插槽后如下

<!-- v-slot="{ node, data }" 只能作用在template 作用域插槽 -->
<template v-slot="{ data }">
<el-row type="flex" style="width: 100%;height: 40px;" justify="space-between" align="middle">
<el-col>{{ data.name }}</el-col>
<el-col :span="4">
<span class="tree-manager">{{ data.managerName }}</span>
<!-- $event 实参 表示类型 -->
<el-dropdown>
<!-- 显示区域内容 -->
<span class="el-dropdown-link">
        操作<i class="el-icon-arrow-down el-icon--right" />
</span>
<!-- 下拉菜单选项 -->
<el-dropdown-menu slot="dropdown">
<el-dropdown-item command="add">添加子部门</el-dropdown-item>
<el-dropdown-item command="edit">编辑部门</el-dropdown-item>
<el-dropdown-item command="del">删除</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
</el-col>
</el-row>
</template>

3.接口获取数据

import { getDepartment } from '@/api/department'




created() {

this.getDepartment() // 调用获取数据的接口

},

methods: {


// 封装好方法

async getDepartment() {

const result = await getDepartment()

console.log('getdepartment')

console.log(result)

this.depts = result

}

}

4.递归转化树形数据

utils/index.js



    /**
     *
     * 列表型数据转化树形
     */

    export function transListToTreeData(list, rootValue) {
  const arr = []
    list.forEach(item => {
    if (item.pid === rootValue) {
        // 找到了匹配的节点
        arr.push(item)
        // 当前节点的id 和 当前节点的子节点的pid是想等的
      const children = transListToTreeData(list, item.id) // 找到的节点的子节点
        item.children = children // 将子节点赋值给当前节点
    }
  })
    return arr
}

views/department/index.vue引入函数

import { getDepartment } from '@/api/department'
import { transListToTreeData } from '@/utils'
created() {
    this.getDepartment() // 调用获取数据的接口
},
    methods: {
    handleNodeClick(data) {
    console.log(data)
    },
    // 封装好方法
    async getDepartment() {
    const result = await getDepartment()
    console.log('getdepartment')
    console.log(result)

    this.depts = transListToTreeData(result, 0)
    }
    }

5.后台创建部门表

/*
 Navicat Premium Data Transfer

 Source Server         : localhost
 Source Server Type    : MySQL
 Source Server Version : 50646
 Source Host           : localhost:3306
 Source Schema         : sky_take_out

 Target Server Type    : MySQL
 Target Server Version : 50646
 File Encoding         : 65001

 Date: 05/03/2024 13:53:05
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for employee
-- ----------------------------
DROP TABLE IF EXISTS `department`;
CREATE TABLE `department`  (
  `id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
   `pid` bigint(20) NOT NULL  COMMENT '父级ID',
  `name` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT '部门名称',
  `code` bigint(20) NOT NULL COMMENT '部门编码',
  `manager_id` int(11)  NOT NULL COMMENT '主管ID',
  `manager_name` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT '主管名称',
   `introduce` varchar(32) CHARACTER SET utf8 COLLATE utf8_bin NOT NULL COMMENT '介绍',
   `create_time` datetime(0) NULL DEFAULT NULL COMMENT '创建时间',
  PRIMARY KEY (`id`) USING BTREE,
  UNIQUE INDEX `idx_name`(`name`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 2 CHARACTER SET = utf8 COLLATE = utf8_bin COMMENT = '部门' ROW_FORMAT = Compact;

SET FOREIGN_KEY_CHECKS = 1;

6.添加子部门-弹层


下拉菜单添加下拉命令，注册添加子部门事件


<!-- $event 实参 表示类型 -->
<el-dropdown @command="operateDept($event)">
<!-- 显示区域内容 -->
<span class="el-dropdown-link">
        操作<i class="el-icon-arrow-down el-icon--right" />
</span>
<!-- 下拉菜单选项 -->
<el-dropdown-menu slot="dropdown">
<el-dropdown-item command="add">添加子部门</el-dropdown-item>
<el-dropdown-item command="edit">编辑部门</el-dropdown-item>
<el-dropdown-item command="del">删除</el-dropdown-item>
</el-dropdown-menu>
</el-dropdown>
则methods中可通过第一个参数获取command如add,edit,del等
operateDept(type) {
    alert(type)
}

封装弹层组件

封装新增组织部门组件-代码位置(**src/views/department/components/add-dept.vue**)，如果是公共组件，则会放至src/components下。

<template>
<el-dialog title="新增部门" :visible="showDialog" @close="close">
</el-dialog>
</template>
<script>
export default {
        name: 'AddDept'
        props: {
        showDialog: {
        type: Boolean,
default: false
        },
        },
        methods: {
        close() {
        this.$emit('update:showDialog', false)
        }
        }
        }
</script>

引入组件

import AddDept from './components/add-dept.vue'


放置弹层


<!-- 放置弹窗 -->
<add-dept :show-dialog="showDialog" />
  
  同时data添加showDialog变量控制显示和隐藏


弹层添加关闭方法

<el-dialog title="新增部门" :visible="showDialog" @close="close">
close() {
    // 修改父组件的值 子传父 this.$emit
    this.$refs.addDept.resetFields() // 重置表单
    this.$emit('update:showDialog', false)
},
父组件的方法添加.sync,表示会接收子组件的事件
<!-- 放置弹层 -->
<!-- 表示会接受子组件的事件  update:showDialog, 值 => 属性 -->
<add-dept :current-node-id="currentNodeId" :show-dialog.sync="showDialog"  />

子部门组件添加表单

<el-form  label-width="120px">
<el-form-item prop="name" label="部门名称">
<el-input  placeholder="2-10个字符" style="width: 80%" size="mini" />
</el-form-item>
<el-form-item label="部门编码">
<el-input  placeholder="2-10个字符" style="width: 80%" size="mini" />
</el-form-item>
<el-form-item label="部门负责人">
<el-select  placeholder="请选择负责人" style="width: 80%" size="mini">
</el-select>
</el-form-item>
<el-form-item  label="部门介绍">
<el-input  placeholder="1-100个字符" type="textarea" size="mini" :rows="4" style="width: 80%" />
</el-form-item>
<el-form-item>
<!-- 按钮 -->
<el-row type="flex" justify="center">
<el-col :span="12">
<el-button size="mini" type="primary" >确定</el-button>
<el-button size="mini" >取消</el-button>
</el-col>
</el-row>
</el-form-item>
</el-form>

定义数据结构和表单校验

<template>
<el-dialog title="新增部门" :visible="showDialog" @close="close">
<!-- 放置弹层内容 -->
<el-form ref="addDept" :model="formData" :rules="rules" label-width="120px">
<el-form-item prop="name" label="部门名称">
<el-input v-model="formData.name" placeholder="2-10个字符" style="width: 80%" size="mini" />
</el-form-item>
<el-form-item prop="code" label="部门编码">
<el-input v-model="formData.code" placeholder="2-10个字符" style="width: 80%" size="mini" />
</el-form-item>
<el-form-item prop="managerId" label="部门负责人">
<el-select v-model="formData.managerId" placeholder="请选择负责人" style="width: 80%" size="mini">
<!-- 下拉选项 循环 负责人数据 label表示显示的字段 value 存储字段 -->
<el-option v-for="item in managerList" :key="item.id" :label="item.username" :value="item.id" />
</el-select>
</el-form-item>
<el-form-item prop="introduce" label="部门介绍">
<el-input v-model="formData.introduce" placeholder="1-100个字符" type="textarea" size="mini" :rows="4" style="width: 80%" />
</el-form-item>
<el-form-item>
<!-- 按钮 -->
<el-row type="flex" justify="center">
<el-col :span="12">
<el-button size="mini" type="primary" @click="btnOK">确定</el-button>
<el-button size="mini" @click="close">取消</el-button>
</el-col>
</el-row>
</el-form-item>
</el-form>
</el-dialog>
</template>
<script>
import { getDepartment, getManagerList, addDepartment } from '@/api/department'
        export default {
        props: {
        showDialog: {
        type: Boolean,
default: false
        },
        currentNodeId: {
        type: Number,
default: null
        }
        },
        data() {
        return {
        managerList: [], // 存储负责人列表
        formData: {
        code: '', // 部门编码
        introduce: '', // 部门介绍
        managerId: '', // 部门负责人id
        name: '', // 部门名称
        pid: '' // 父级部门的id
        },
        rules: {
        code: [{ required: true, message: '部门编码不能为空', trigger: 'blur' },
        {
        min: 2, max: 10, message: '部门编码的长度为2-10个字符', trigger: 'blur'
        }, {
        trigger: 'blur',
        // 自定义校验模式
        validator: async(rule, value, callback) => {
        // value就是输入的编码
        const result = await getDepartment()
        // result数组中是否存在 value值
        if (result.some(item => item.code === value)) {
        callback(new Error('部门中已经有该编码了'))
        } else {
        callback()
        }
        }
        }
        ], // 部门编码
        introduce: [{ required: true, message: '部门介绍不能为空', trigger: 'blur' }, {
        min: 1, max: 100, message: '部门介绍的长度为1-100个字符', trigger: 'blur'
        }], // 部门介绍
        managerId: [{ required: true, message: '部门负责人不能为空', trigger: 'blur' }], // 部门负责人id
        name: [{ required: true, message: '部门名称不能为空', trigger: 'blur' },
        {
        min: 2, max: 10, message: '部门名称的长度为2-10个字符', trigger: 'blur'
        }, {
        trigger: 'blur',
        // 自定义校验模式
        validator: async(rule, value, callback) => {
        // value就是输入的编码
        const result = await getDepartment()
        // result数组中是否存在 value值
        if (result.some(item => item.name === value)) {
        callback(new Error('部门中已经有该名称了'))
        } else {
        callback()
        }
        }
        }] // 部门名称
        // pid: '' // 父级部门的id 不需要做校验
        }
        }
        },
        created() {
        this.getManagerList()
        },
        methods: {
        close() {
        // 修改父组件的值 子传父
        this.$refs.addDept.resetFields() // 重置表单
        this.$emit('update:showDialog', false)
        },
        async getManagerList() {
        this.managerList = await getManagerList()
        },
        // 点击确定时调用
        btnOK() {
        this.$refs.addDept.validate(async isOK => {
        if (isOK) {
        await addDepartment({ ...this.formData, pid: this.currentNodeId })
        // 通知父组件更新
        this.$emit('updateDepartment')
        // 提示消息
        this.$message.success('新增部门成功')
        this.close()
        }
        })
        }
        }
        }
</script>

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