应用十二:Vue之动态表单的实现及校验
该篇仍然使用Vue + TypeScript的语法,以近期项目中的实例来做分享~
动态表单实现
首先给出页面展示效果:
该页面分为上下两部分,上面是静态表单部分,下面是动态的实现。简单来说就是每点击一次批量添加按钮就会新增一行设备信息表单,点击后面的移除就会删掉当前表单行。
静态表单就不多说了,动态表单的具体实现逻辑是:
1、将每一行的表单作为一个单独的组件进行封装。
2、使用一个数组来存储多个表单(也就是上一步封装的组件)并循环展示。
代码实现如下:
其中device-info就是封装好的组件,组件的完整实现如下:
<template> <div class="deviceInfo"> <el-row> <el-col :span="6"> <el-form-item label="设备编号" :prop="'list.'+index+'.deviceCode'" :rules="{ required: true, message: '设备编号不能为空', trigger: 'blur' }"> <el-input v-model="deviceInfo.deviceCode" clearable placeholder="" maxlength="20" @keyup.native="deviceInfo.deviceCode=deviceInfo.deviceCode.replace(/[^\w\.\/]/ig,'').toUpperCase()"></el-input> </el-form-item> </el-col> <el-col :span="6"> <el-form-item label="设备品牌" :prop="'list.'+index+'.brandCode'" :rules="{ required: true, message: '设备品牌不能为空', trigger: 'change' }"> <el-select v-model="deviceInfo.brandCode" placeholder="" @change="handleChangeBrand"> <el-option v-for="item in DEVICE_BRAND" :key="item.modelCode" :label="item.modelName" :value="item.modelCode"></el-option> </el-select> </el-form-item> </el-col> <el-col :span="6"> <el-form-item label="设备型号" :prop="'list.'+index+'.modelCode'" :rules="{ required: true, message: '设备型号不能为空', trigger: 'change' }"> <el-select v-model="deviceInfo.modelCode" placeholder=""> <el-option v-for="item in DEVICE_MODEL" :key="item.modelCode" :label="item.modelName" :value="item.modelCode"></el-option> </el-select> </el-form-item> </el-col> <el-col :span="6"> <el-form-item label=" " v-if="list.length > 1"> <el-button class="remove" type="primary" @click="removeComponent">移除</el-button> </el-form-item> </el-col> </el-row> </div> </template> <script lang="ts"> import { Component, Vue, Prop, Emit } from 'vue-property-decorator' import ReportVO from '@/entity/MaintainManage/Report.ts' @Component export default class DeviceInfo extends Vue { @Prop({ default: 0 }) private index!: number // 当前组件索引 @Prop() private deviceInfo!: ReportVO // 当前组件数据对象 @Prop() private list!: Array<any> // 存储组件的集合 private DEVICE_BRAND: Array<Object> = [] private DEVICE_MODEL: Array<Object> = [] private mounted(): void { // 后台获取设备品牌 TODO } public handleChangeBrand(item: string) { // 后台根据品牌获取设备型号 TODO } @Emit('removeComponent') public removeComponent() { return this.index } } </script> <style lang="scss"> .deviceInfo { .el-textarea__inner { width: 420px; } .remove { color: #FAFAFA; background: #F56C6C; border-color: #F56C6C; } } </style>
动态表单的批量添加和移除功能的实现如下:
动态表单校验
同样先给出页面表单校验的展示效果:
虽然整个页面分为上下静态表单和动态表单两部分,但用的是一个按钮一次提交的,为了实现统一校验,所以整个页面最好使用一个el-form标签包裹起来,静态表单的校验请参考《应用二:Vue之ElementUI Form表单校验》,而动态表单的校验有两个地方需要注意,一个是el-form-item标签上prop属性的写法,另一个就是校验规则的写法(只能写在标签上),具体写法如下:
prop的属性值中,list是form对象中存储组件的数组,index是当前组件在数组中的索引,deviceCode就是当前表单绑定的字段,可以参考前面组件的完整实现代码。
下面给出整个页面的完整代码:
<template> <div class="maintainReport"> <el-form ref="form" :model="form" :inline="true" label-width="120px" :rules="rules"> <div class="my-form"> <div class="my-title">添加寄件信息</div> <el-row> <el-col :span="6"> <el-form-item label="寄件人" prop="loginWorkName"> <el-input v-model="form.loginWorkName" clearable placeholder=""></el-input> </el-form-item> </el-col> <el-col :span="6"> <el-form-item label="寄件人电话" prop="linkTel"> <el-input v-model="form.linkTel" clearable placeholder=""></el-input> </el-form-item> </el-col> <el-col :span="6"> <el-form-item label="寄送单号" prop="sendCode"> <el-input v-model="form.sendCode" clearable placeholder="" maxlength="18" @keyup.native="form.sendCode=form.sendCode.replace(/[^\w\.\/]/ig,'').toUpperCase()"></el-input> </el-form-item> </el-col> </el-row> </div> <div class="my-table"> <div class="my-title fl">添加设备信息</div> <div class="btn-table"> <div class="btn-l"> <el-button type="primary" icon="el-icon-circle-plus-outline" @click="addComponent">批量添加</el-button> </div> </div> <div class="clear" v-for="(item, $index) in form.list" :key="$index"> <device-info :index="$index" :deviceInfo="item" :list="form.list" @removeComponent="removeComponent"></device-info> <hr style="border: 1px dashed #f3edf5;" v-if="$index!=form.list.length-1"> </div> </div> </el-form> <div style="text-align: center;margin-top: 20px;"> <el-button type="primary" plain @click="submitReport">维修上报提交</el-button> </div> </div> </template> <script lang="ts"> import { Component, Vue, Ref } from 'vue-property-decorator' import MyVue from '@/utils/myVue.ts' import DeviceInfo from '@/views/MaintainManage/components/DeviceInfo.vue' @Component({ components: { 'device-info': DeviceInfo } }) export default class MaintainReport extends MyVue { // data private form: any = { loginWorkName: '', linkTel: '', list: [{ deviceCode: '', brandCode: '', modelCode: '' }] } private rules: any = { loginWorkName: [{required: true, message: '寄件人不能为空', trigger: 'blur'}], linkTel: [{required: true, message: '寄件人电话不能为空', trigger: 'blur'}, {pattern: "^(1[3-9]{1}\\d{9})$", message: '电话格式不正确', trigger: 'blur'}] } public addComponent() { this.form.list.push({ deviceCode: '', brandCode: '', modelCode: '' }) } public removeComponent(index: number) { this.form.list.splice(index, 1); } @Ref('form') readonly submitForm!: any // 维修上报提交 public submitReport() { this.submitForm.validate((valid: boolean) => { if (valid) { // TODO } }) } } </script> <style lang="scss"> .maintainReport { .my-table .btn-table { left: 28px; width: calc(100% - 28px); } .el-button--small { width: auto; } .my-form .el-input__inner, .my-table .el-input__inner { width: 160px; height: 30px; line-height: 30px; } .detail-info .el-input__inner { width: 480px; } .el-textarea__inner { width: 625px; } } </style>
以上就是关于动态表单实现及校验的分享,有任何疑问和不足欢迎留言并指正!!!