使用element-ui +Vue 解决 table 里包含表单验证的问题

应用场景：

在实际使用中经常会遇到需要在Form表单中使用table表格进行表单提交，同时又需要对table的字段进行校验，效果如图所示：

这个校验中，最关键的问题在于如何给el-form-item 动态绑定prop。

:prop="'tableData.' + scope.$index + '.字段名'"

方法一：

<template>
 <div class="app-container"> 
  <el-form :model="fromData" ref="from">
  <el-table :data="fromData.domains">
   <el-table-column label="姓名">
   <template slot-scope="scope">
    <el-form-item :prop="'domains.'+scope.$index+'.name'" :rules="fromaDataRules.name">
    <el-input v-model="scope.row.name"></el-input>
    </el-form-item>
   </template>
   </el-table-column>
   <el-table-column label="地址">
   <template slot-scope="scope">
    <el-form-item :prop="'domains.'+scope.$index+'.desc'" :rules="fromaDataRules.desc">
    <el-input v-model="scope.row.desc"></el-input>
    </el-form-item>
   </template>
   </el-table-column>
  </el-table>
  </el-form>
  <el-button type="warning" @click="submit('from')">submit</el-button>
 
 </div>
</template> 
<script>
 export default {
 data() {
  return { 
  fromData:{
   domains:undefined
  },
  fromaDataRules:{
   name:[{ required: true, message: '请输入', trigger: 'blur' }],
   desc:[ { required: true, message: '请填写', trigger: 'blur' }]
  },
  domains:[],
  }
 },
 mounted(){
  this.initDomains()
 },
 methods:{
  initDomains(){
  this.domains=[
   {
   name: "小红",
   desc: "11123"
   },
   {
    name: "小红",
   desc: "11123"
   }
  ]
  },
  init(){ 
  this.$set(this.fromData,'domains',this.domains)
  },
  submit(formName){
  this.$refs[formName].validate((valid) => {
   if (valid) {
   alert('submit!');
   } else {
   console.log('error submit!!');
   return false;
   }
  });
  }
 }
 }
</script>

上述代码中比较关键的部分有一下两点：

1、:prop="‘domains.'+scope.$index+'.name'" ，用于动态绑定prop到el-form-item；

2、this.$set(this.fromData,‘domains',this.domains) ，用于为fromData设置domains这个节点。

方法二：

<template>
 <div class="app-container">
 
  <el-form :model="fromData" ref="from">
  <el-table :data="fromData.domains">
   <el-table-column label="姓名">
   <template slot-scope="scope">
    <el-form-item :prop="'domains.'+scope.$index+'.name'" :rules="fromData.fromaDataRules.name">
    <el-input v-model="scope.row.name"></el-input>
    </el-form-item>
   </template>
   </el-table-column>
   <el-table-column label="地址">
   <template slot-scope="scope">
    <el-form-item :prop="'domains.'+scope.$index+'.desc'" :rules="fromData.fromaDataRules.desc">
    <el-input v-model="scope.row.desc"></el-input>
    </el-form-item>
   </template>
   </el-table-column>
  </el-table>
  </el-form>
  <el-button type="warning" @click="submit('from')">submit</el-button> 
 </div>
</template> 
<script>
 export default {
 data() {
  return {
  
  fromData:{
	   fromaDataRules:{
	   name:[{ required: true, message: '请输入', trigger: 'blur' }],
	   desc:[ { required: true, message: '请填写', trigger: 'blur' }]
	  },
   domains:[],
  }, 
  }
 },
 mounted(){
  this.initDomains()
 },
 methods:{
  initDomains(){
  this.fromData.domains=[
   {
   name: "小红",
   desc: "11123"
   },
   {
   name: "小红",
   desc: "11123"
   }
  ]
  },
  init(){ 
  },
  submit(formName){
  this.$refs[formName].validate((valid) => {
   if (valid) {
   alert('submit!');
   } else {
   console.log('error submit!!');
   return false;
   }
  });
  }
 }
 }
</script>

补充知识：Vue+ElementUI 完整增删查改验证功能的表格

我就废话不多说了，大家还是直接看代码吧~

<template>
 <div class="block">
 <el-col>
  <el-row>
  <el-form>
   <el-form-item>
   <el-input style="width: 250px;float: left" placeholder="请输入名称" v-model="query"></el-input>
   <el-button @click="handleSelect" style="float: left;margin-left: 10px">查询</el-button>
   <el-button @click="handleAdd" style="float: left;margin-left: 10px">新增</el-button>
   </el-form-item>
  </el-form>
  </el-row>
  <el-row>
 <el-table
  :data="tableData"
  style="width: 100%"
  border>
  <el-table-column
  prop="date"
  label="日期"
  width="250">
  </el-table-column>
  <el-table-column
  prop="name"
  label="姓名"
  width="250">
  </el-table-column>
  <el-table-column
  prop="address"
  label="地址"
  width="350">
  </el-table-column>
  <el-table-column>
  <template slot-scope="scope">
  <el-button size="mini" @click="handleEdit(scope.$index,scope.row)">编辑</el-button>
  <el-button size="mini" type="danger" @click="handleDelete(scope.$index,scope.row)">删除</el-button>
  </template>
  </el-table-column>
 </el-table>
  </el-row>
  <el-row>
  <el-dialog class="dialog" :title="operation===true ?'新增':'编辑'" :visible.sync="dialogVisible" width="350px" >
   <el-form label-width="80px" :model="lineData" :rules="addRule" ref="lineData" >
   <el-form-item label="日期" prop="date">
    <el-input v-model="lineData.date"></el-input>
   </el-form-item>
   <el-form-item label="姓名" prop="name">
    <el-input v-model="lineData.name"></el-input>
   </el-form-item>
   <el-form-item label="地址">
    <el-input v-model="lineData.address"></el-input>
   </el-form-item>
   <el-form-item>
    <el-button @click="handleSave" type="primary">确定</el-button>
    <el-button @click="handleCancel">取消</el-button>
   </el-form-item>
   </el-form>
  </el-dialog>
  </el-row>
 </el-col>
 </div>
</template>

<script>export default {
 data () {
 return {
  operation: true,
  dialogVisible: false,
  lineData: {},
  editData: {},
  query: '',
  addRule: {
  date: [{required: true, message: '请输入日期', trigger: 'blur'}],
  name: [{required: true, message: '请输入名称', trigger: 'blur'}]
  },
  tableData: [{
  id: 1,
  date: '2016-05-02',
  name: '王一虎',
  address: '上海市普陀区金沙江路 1518 弄'
  }, {
  id: 2,
  date: '2016-05-04',
  name: '王二虎',
  address: '上海市普陀区金沙江路 1517 弄'
  }, {
  id: 3,
  date: '2016-05-01',
  name: '王一虎',
  address: '上海市普陀区金沙江路 1519 弄'
  }, {
  id: 4,
  date: '2016-05-03',
  name: '王四虎',
  address: '上海市普陀区金沙江路 1516 弄'
  }]
 }
 },
 methods: {
 handleEdit (index, row) {
  this.editData = JSON.stringify(row)
  this.lineData = JSON.parse(this.editData)
  this.dialogVisible = true
  this.operation = false
 },
 handleDelete (index, row) {
  this.tableData.splice(index, 1)
 },
 handleAdd () {
  this.dialogVisible = true
  this.operation = true
  this.lineData = {}
  this.lineData.id = Math.random()
 },
 handleSelect () {
  if (this.query !== '') {
  const tmpData = []
  for (let item of this.tableData) {
   if (item.name === this.query) {
   tmpData.push(item)
   }
  }
  this.tableData = tmpData
  }
 },
 handleSave () {
  this.$refs.lineData.validate((valid) => {
  if (valid) {
   this.addLine(this.lineData)
   this.dialogVisible = false
  } else {
   alert('保存失败')
   return false
  }
  })
 },
 handleCancel () {
  this.dialogVisible = false
 },
 addLine (item) {
  let existed = false
  for (let i = 0; i < this.tableData.length; i++) {
  if (this.tableData[i].id === item.id) {
   this.tableData[i].id = item.id
   this.tableData[i].name = item.name
   this.tableData[i].address = item.address
   this.tableData[i].date = item.date
   existed = true
   break
  }
  }
  if (!existed) {
  this.tableData.push(this.lineData)
  }
 }
 }
}
</script>

<style scoped>
 .block{
 width: 75%;
 margin-left: 400px;
 margin-top: 200px;
 }
</style>

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使用element-ui +Vue 解决 table 里包含表单验证的问题

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