Vue.js递归组件实现组织架构树和选人功能

大家好！先上图看看本次案例的整体效果。

浪奔，浪流，万里涛涛江水永不休。如果在jq时代来实这个功能简直有些噩梦了，但是自从前端思想发展到现在的以MVVM为主流的大背景下，来实现一个这样繁杂的功能简直不能容易太多。下面就手把手带您一步步拨开这个案例的层层迷雾。

实现步骤如下：

1. api构建部门和员工信息接口，vuex全局存放部门list和员工list数据信息。

api：

export default {
 getEmployeeList () {
  return {
   returncode: 0,
   message: '',
   result: [
    {
     id: 1,
     employeeName: '吴亦凡',
     departmentId: 44
    },
    {
     id: 2,
     employeeName: '鹿晗',
     departmentId: 45
    },
    {
     id: 3,
     employeeName: '孙红雷',
     departmentId: 44
    },
    {
     id: 4,
     employeeName: '周杰伦',
     departmentId: 45
    },
    {
     id: 5,
     employeeName: '张国荣',
     departmentId: 45
    },
    {
     id: 6,
     employeeName: '陈百强',
     departmentId: 45
    },
    {
     id: 7,
     employeeName: '谭咏麟',
     departmentId: 41
    },
    {
     id: 8,
     employeeName: '谷村新司',
     departmentId: 45
    },
    {
     id: 9,
     employeeName: '中岛美雪',
     departmentId: 46
    },
    {
     id: 10,
     employeeName: '周润发',
     departmentId: 47
    },
    {
     id: 14,
     employeeName: '周慧敏',
     departmentId: 58
    },
    {
     id: 13,
     employeeName: '张学友',
     departmentId: 58
    }
   ]
  }
 },
 getDepartmentList () {
  return {
   returncode: 0,
   message: '',
   result: [
    {
     id: 40,
     name: '研发一部',
     parentId: 37,
     sequence: 2
    },
    {
     id: 41,
     name: '研发二部',
     parentId: 37,
     sequence: 4
    },
    {
     id: 43,
     name: '市场',
     parentId: 0,
     sequence: 6
    },
    {
     id: 44,
     name: '销售',
     parentId: 0,
     sequence: 4
    },
    {
     id: 45,
     name: '财务',
     parentId: 0,
     sequence: 5
    },
    {
     id: 46,
     name: '研发三部',
     parentId: 37,
     sequence: 1
    },
    {
     id: 47,
     name: '研发四部',
     parentId: 37,
     sequence: 3
    },
    {
     id: 37,
     name: '研发',
     parentId: 0,
     sequence: 5
    },
    {
     id: 58,
     name: '研发一部',
     parentId: 57,
     sequence: 1
    },
    {
     id: 59,
     name: '测试',
     parentId: 0,
     sequence: 5
    },
    {
     id: 60,
     name: '测试一部',
     parentId: 59,
     sequence: 1
    },
    {
     id: 61,
     name: '测试二部',
     parentId: 59,
     sequence: 2
    },
    {
     id: 62,
     name: '研发二部',
     parentId: 57,
     sequence: 2
    }
   ]
  }
 }
}

store:

import dataApi from '@/api/data.api.js'
const state = {
 employeeList: [],
 departmentList: []
}

const getters = {
 employeeList: state => state.employeeList,
 departmentList: state => state.departmentList
}

const mutations = {
 SetEmployeeList (state, { employeeList }) {
  state.employeeList = employeeList
 },
 SetDepartmentList (state, { departmentList }) {
  state.departmentList = departmentList
 }
}

const actions = {
 getEmployeeList ({ commit }) {
  let employeeResult = dataApi.getEmployeeList()
  if (employeeResult.returncode === 0) {
   commit('SetEmployeeList', { employeeList: employeeResult.result })
  }
 },
 getDepartmentList ({ commit }) {
  let departmentResult = dataApi.getDepartmentList()
  if (departmentResult.returncode === 0) {
   commit('SetDepartmentList', { departmentList: departmentResult.result })
  }
 }
}

export default {
 state,
 getters,
 mutations,
 actions,
 namespaced: true
}

2. vue.$set为员工对象增加响应式属性checked控制是否选中，methods中创建选中方法如下：

selectEmployee () {
   var self = this
   if (self.employee.checked === undefined) {
    this.$set(self.employee, 'checked', true)
   } else {
    self.employee.checked = !self.employee.checked
   }
  }

3. computed计算属性监控文本框输入字段searchKey的变化实现左侧员工列表实时检索功能。

searchEmployeeList () {
   var self = this
   if (self.searchKey.trim() === '') {
    console.log(self.employeeList)
    return self.employeeList.filter(item => item.checked === undefined || !item.checked)
   } else {
    return self.employeeList.filter(item => (item.employeeName.indexOf(self.searchKey.trim()) !== -1) && (item.checked === undefined || !item.checked))
   }
  }

4. 构建组织结构树的部门组件，部门下可能存在子部门和员工，所以组件内部再调用部门组件和员工组件，以达到循环递归的效果。

<template>
 <li @click.stop="expandTree()">
  <a :class="lvl|level">
   <span class="expand-tree-icon">
    <i class="fa fa-caret-right" :class="{'active':department.expand}"></i>
   </span>
   <span>
    <i class="lcfont lc-department-o"></i>
   </span>
   <span class="title">
    <span>{{department.name}}</span>
    <span class="title-desc">({{allChildEmployeeList.length}}人 )</span>
    <i class="lcfont lc-add" @click.stop="selectDepartmentEmployees()" title="添加整个部门成员"></i>
   </span>
  </a>
  <ul v-show="department.expand">
   <child-employee
    v-for="(employee,index) in childEmployeeList"
    :employee="employee"
    :lvl="lvl+1"
    :key="index"
   ></child-employee>
   <child-department
    v-for="(department,index) in childDepartmentList"
    :department="department"
    :employeeList="employeeList"
    :departmentList="departmentList"
    :lvl="lvl+1"
    :key="index"
   ></child-department>
  </ul>
 </li>
</template>

5. 结构树之员工组件

<template>
 <li v-on:click.stop="selectEmployee()">
  <a class="member-item" v-bind:class="lvl|level" href="javascript:;" rel="external nofollow" >
   <div class="lc-avatar flex-se1" name="true" size="30">
    <div class="lc-avatar-30" :title="employee.employeeName">
     <span class="lc-avatar-def" style="background-color: rgb(112, 118, 142);">
      <div>{{employee.employeeName}}</div>
     </span>
     <div class="lc-avatar-name">{{employee.employeeName}}</div>
    </div>
   </div>
   <i class="lcfont" v-bind:class="{'lc-check':employee.checked}"></i>
  </a>
 </li>
</template>

6. 和上面员工的选中原理类似，控制部门节点的展开和合并也通过$set方法扩展一个响应式的expand属性。

expandTree () {
   var self = this
   if (self.department.expand === undefined) {
    self.$set(self.department, 'expand', true)
   } else {
    self.department.expand = !self.department.expand
   }
  }

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