vue+ElementUI动态表单（校验规则、计算条件和约束条件
2020-09-02 本文已影响0人
vikang
主要用于记录，若能帮到他人，也算是功德了，哈哈。
在原有基础上新增了组的概念（某些字段属于一个组，用的elementUI中的el-collapse区分）、
listAll的概念（某些字段属于一个组，用的elementUI中的el-table区分），
两种概念数据结构一致。
效果如下：
dynamicFormUpgrade2_.png
不啰嗦了，直接上代码（可直接拷贝试用）
<template>
<div class="dynamicForm">
<div v-for="(collapse,index) in form.getData" :key="index">
<el-collapse v-if="collapse.groupType === 'noList'">
<el-collapse-item v-for="(groupItem,gKey) in collapse.groupList" :key="gKey">
<template slot="title">
{{collapse.groupName}}
<el-button type="primary" size="mini" @click.stop="groupChange(index,gKey,groupItem)">复制组</el-button>
<el-button type="danger" size="mini" @click.stop="groupChange(index,gKey)">删除组</el-button>
</template>
{{collapse.computedRule}}
<el-form :model="groupItem" label-width="80px">
<el-form-item v-for="(item,key) in groupItem.copyData" :key="key" :label="item.label" v-show="!item.hide"
:prop="'copyData.' + key +'.value'" :rules="[{required: true, message: 'Can\'t be empty'}]">
<el-input v-model="item.value" :disabled="!item.formula"></el-input>
</el-form-item>
</el-form>
</el-collapse-item>
</el-collapse>
<el-table v-if="collapse.groupType === 'isList'" :data="collapse.groupList">
<el-table-column :label="lItem.label" v-for="(lItem, lIndex) in collapse.groupLabel" :key="lIndex">
<template scope="scope">
<span v-if="collapse.groupList[scope.$index].copyData[lItem.code].hideRule" v-show="!collapse.groupList[scope.$index].copyData[lItem.code].hide">
{{collapse.groupList[scope.$index].copyData[lItem.code].value}}
</span>
<el-form v-else :model="collapse.groupList[scope.$index].copyData[lItem.code]" size="mini">
<el-form-item v-show="!collapse.groupList[scope.$index].copyData[lItem.code].hide" prop="value" :rules="[{required: true, message: 'Can\'t be empty'}]">
<el-input v-model="collapse.groupList[scope.$index].copyData[lItem.code].value" :disabled="!collapse.groupList[scope.$index].copyData[lItem.code].formula"></el-input>
</el-form-item>
</el-form>
</template>
</el-table-column>
<el-table-column fixed="right" label="操作" width="100">
<template slot-scope="scope">
<el-button @click="groupChange(index,scope.$index,collapse.groupList[scope.$index])" type="text" size="small">复制</el-button>
<el-button @click="groupChange(index,scope.$index)" type="text" size="small">删除</el-button>
</template>
</el-table-column>
</el-table>
</div>
</div>
</template>
<script>
export default {
name: 'DynamicFormUpgrade2',
data () {
return {
form: {
getData: [],
},
//存储所有watcher,增删组时需全部清除
formWatchers: [],
}
},
created () {
this.getDataFn();
},
mounted() {
//首次添加计算与约束规则
this.addComOrResRules();
},
methods: {
//增删组
groupChange(index,gIndex,copyData){
console.log(index,gIndex,copyData);
//清空所有watcher
this.formWatchers.forEach(_ => _());
!!copyData ?
this.form.getData[index].groupList.push(JSON.parse(JSON.stringify(copyData))) :
this.form.getData[index].groupList.splice(gIndex,1);
this.addComOrResRules();
},
//
getDataFn() {
/*数据挡板--key1、key2等为表单字段唯一标识，通常格式固定，
方法内需根据此格式制定正则以便提取。*/
this.form.getData = [
{
computedRule: '计算规则：label1*label2-label3/label4=result1;空值按0计算',
groupKey: 'groupOne',
groupName: '组一test',
groupType: 'isList',
groupLabel: [
{
label: 'label1',
code: 'key1'
},
{
label: 'label2',
code: 'key2'
},
{
label: 'label3',
code: 'key3'
},
{
label: 'label4',
code: 'key4'
},
{
label: 'result1',
code: 'key5'
},
{
label: 'visible1',
code: 'key6'
},
{
label: 'visible2',
code: 'key7'
},
{
label: 'visible3',
code: 'key8'
},
],
groupList: [
{
copyId: 1,//用于后台做重复组区分（字段都相同）
copyData: {
key1:{
formula: 'key1*key2-key3/key4=key5',
value: 5,
label: 'label1',
hide: false,
hideRule: null,
readOnly: false
},
key2:{
formula: 'key1*key2-key3/key4=key5',
value: 400,
label: 'label2',
hide: false,
hideRule: null,
readOnly: false
},
key3:{
formula: 'key1*key2-key3/key4=key5',
value: 30,
label: 'label3',
hide: false,
hideRule: null,
readOnly: false
},
key4:{
formula: 'key1*key2-key3/key4=key5',
value: 2,
label: 'label4',
hide: false,
hideRule: null,
readOnly: false
},
key5:{
formula: null,
value: null,
label: 'result1',
hide: false,
hideRule: null,
readOnly: true
},
key6:{
formula: null,
value: 'isShow: result1 >= 200',
label: 'visible1',
hide: false,
hideRule: 'key5 >= 200',
readOnly: false
},
key7:{
formula: null,
value: 'isShow: label3-label1 >= 20',
label: 'visible2',
hide: false,
hideRule: 'key3-key1 >= 20',
readOnly: false
},
key8:{
formula: null,
value: 'isShow: label3-label1 < label2',
label: 'visible3',
hide: false,
hideRule: 'key3-key1 < key2',
readOnly: false
}
}
}
],
},
{
computedRule: '计算规则：label1+label2*label3-label4=result1;空值按0计算',
groupKey: 'groupTwo',
groupName: '组二test',
groupType: 'noList',
groupList: [
{
copyId: 1,
copyData:{
key1:{
formula: 'key1+key2*key3-key4=key5',
value: 150,
label: 'label1',
hide: false,
hideRule: null,
readOnly: false
},
key2:{
formula: 'key1+key2*key3-key4=key5',
value: 10,
label: 'label2',
hide: false,
hideRule: null,
readOnly: false
},
key3:{
formula: 'key1+key2*key3-key4=key5',
value: 300,
label: 'label3',
hide: false,
hideRule: null,
readOnly: false
},
key4:{
formula: 'key1+key2*key3-key4=key5',
value: 2,
label: 'label4',
hide: false,
hideRule: null,
readOnly: false
},
key5:{
formula: null,
value: null,
label: 'result1',
hide: false,
hideRule: null,
readOnly: true
},
key6:{
formula: null,
value: 'isShow: result1 >= 150',
label: 'visible1',
hide: false,
hideRule: 'key5 >= 150',
readOnly: false
},
key7:{
formula: null,
value: 'isShow: label3-label1 < 200',
label: 'visible2',
hide: false,
hideRule: 'key3-key1 < 200',
readOnly: false
},
key8:{
formula: null,
value: 'isShow: label3-label1 > label2',
label: 'visible3',
hide: false,
hideRule: 'key3-key1 > key2',
readOnly: false
}
}
}
],
},
];
},
//添加计算与约束规则
addComOrResRules(){
//动态添加监听--数据结构与计算规则需前后端统一制定再进行代码调整
let _this = this;
this.form.getData.forEach((_, index) => {
_.groupList.forEach((__, gIndex) => {
Object.keys(__.copyData).forEach(___ => {
//计算
__.copyData[___].formula &&
__.copyData[___].formula.indexOf('=') > -1 &&
this.formWatchers.push(_this.$watch('form.getData.' + index + '.groupList.' + gIndex + '.copyData.' + ___, (n, o) => {
let res = n.formula.split('=')[0].replace(/[0-9A-Za-z]{4}/img, key => Number(__.copyData[key].value));
console.log(111,'form.getData.' + index + '.groupList.' + gIndex + '.copyData.' + ___, res);
__.copyData[n.formula.split('=')[1]].value = eval(res).toString().indexOf('Infinity') > -1 ? 'error' : eval(res);
},{deep: true,immediate: true}));
//约束
__.copyData[___].hideRule &&
__.copyData[___].hideRule.replace(/[0-9A-Za-z]{4}/img, key => {
this.formWatchers.push(_this.$watch('form.getData.'+ index + '.groupList.' + gIndex + '.copyData.' + key, (n, o) => {
let res = __.copyData[___].hideRule.replace(/[0-9A-Za-z]{4}/img, item => Number(__.copyData[item].value));
console.log(222,'form.getData.'+ index + '.groupList.' + gIndex + '.copyData.' + key, res)
__.copyData[___].hide = !eval(res);
},{deep: true,immediate: true}));
})
})
})
})
}
}
}
</script>
<style lang="scss" scoped>
.dynamicForm{
margin: 0 100px;
}
</style>
