Element-ui 中对表单进行验证
Element-ui 中对表单(Form)绑定的对象中的对象属性进行校验
如果是直接绑定属性,是可以的,但是绑定对象中的属性就需要特别处理,需要在rules中添加双引号 " "或者''
<template> <div class="about"> <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm"> <el-form-item label="活动名称" prop="name"> <el-input v-model="ruleForm.name"></el-input> </el-form-item> <el-form-item label="活动区域" prop="region"> <el-select v-model="ruleForm.region" placeholder="请选择活动区域"> <el-option label="区域一" value="shanghai"></el-option> <el-option label="区域二" value="beijing"></el-option> </el-select> </el-form-item> // 注意这里 <el-form-item label="活动形式" prop="activity.type"> <el-input v-model="ruleForm.activity.type"></el-input> </el-form-item> <el-form-item> <el-button type="primary" @click="submitForm('ruleForm')">立即创建</el-button> <el-button @click="resetForm('ruleForm')">重置</el-button> </el-form-item> </el-form> </div> </template> <script> export default { data() { return { ruleForm: { name: '', region: '', activity:{ type:"" } }, rules: { name: [ { required: true, message: '请输入活动名称', trigger: 'blur' }, { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' } ], region: [ { required: true, message: '请选择活动区域', trigger: 'change' } ], // 注意这里 "activity.type": [ { required: true, message: '请输入活动名称', trigger: 'blur' }, { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' } ], } } }, methods:{ submitForm(formName) { this.$refs[formName].validate((valid) => { if (valid) { alert('submit!'); } else { console.log('error submit!!'); return false; } }); }, resetForm(formName) { this.$refs[formName].resetFields(); } }, } </script>
原文链接:https://blog.csdn.net/ZYS10000/article/details/107179238/
vue使用Element组件时v-for循环里的表单项验证方法
Element组件有一套完善的表单验证方法,官方文档写的也很清楚:Element表单验证API,正常按照官方文档添加rules规则,需要验证的表单项设置prop,然后提交表单时通过form的validate方法验证表单项就可以了。
然鹅问题来了,如果表单项里有通过v-for动态生成的表单项,如何设置验证呢?这个官方文档并没有明确的说法,我们通过查找解决方案和实际验证,总结出来解决方法如下。
首先是循环表单项没有加验证之前的代码:
<template> <div class="content-body"> <el-form ref="form" :model="form" :rules="rules" label-width="120px"> <el-row :gutter="10"> <el-col :span="12" :offset="0"> <el-form-item label="套餐名称:" prop="activityName" id="activityName"> <el-input v-model="form.activityName"></el-input> </el-form-item> </el-col> </el-row> <el-row :gutter="10"> <el-col :span="12"> <el-form-item label="状态:"> <el-radio v-model="form.status" label="1">上线</el-radio> <el-radio v-model="form.status" label="0">下线</el-radio> </el-form-item> </el-col> </el-row> <el-row :gutter="10"> <el-col :span="2" style="width:120px;"> <div class="sub-title">梯度设置:</div> </el-col> <el-col :span="20"> <el-row :gutter="10" v-for="(item,index) in form.productGroup" :key="index"> <el-col :span="6"> <el-form-item label="商品数量:"> <el-input v-model="item.num" type="number" size="small" style="width:80px;"></el-input> </el-form-item> </el-col> <el-col :span="6"> <el-form-item label="优惠价格:"> <el-input v-model="item.price" type="number" size="small" style="width:80px;"></el-input> </el-form-item> </el-col> <el-col :span="4"> <i class="el-icon-remove-outline" @click="deleteLadder(index)"></i> <i class="el-icon-circle-plus-outline" @click="addLadder" v-if="index==0"></i> </el-col> </el-row> </el-col> </el-row> <el-form-item size="medium" class="div-submit"> <el-button @click="resetForm('form')">取消</el-button> <el-button type="primary" @click="submitForm('form')">提交</el-button> </el-form-item> </el-form> </div> </template> <script> /* eslint-disable */ export default { data() { return { form: { activityName: '', status: '1', productGroup: [{num:"",price:""}] }, rules: { activityName: [ { required: true, message: '请输入套餐名称', trigger: 'blur' } ] } } }, methods: { deleteLadder(index) { if(this.form.productGroup.length>1){ this.form.productGroup.splice(index,1); } }, addLadder() { this.form.productGroup.push({num:"",price:""}); }, submitForm(formName) { console.log("activityName...",this.form.activityName); this.$refs[formName].validate((valid,obj) => { if (valid) { this.submitFormAction(); } else { this.$message.error("验证不通过"); } }); }, submitFormAction() { this.$message.success("提交成功"); }, resetForm(formName) { this.$refs[formName].resetFields(); this.form.productGroup = [{num:"",price:""}]; } } } </script> <style> .el-form-item { margin-bottom: 20px; } </style>
首先是添加rules规则,这个和正常添加规则一样:
productGroupRules: { productGroupNum: [{required: true, message: '请填写商品数量', trigger: 'blur'}], productGroupPrice: [{required: true, message: '请填写优惠价格', trigger: 'blur'}] }
然后给表单项添加验证,以商品数量为例:
<el-form-item label="商品数量:" :prop="'productGroup.'+index+'.num'" :rules="productGroupRules.productGroupNum"> <el-input v-model="item.num" type="number" size="small" style="width:80px;"></el-input> </el-form-item>
注意这里:rules
是每个表单项都要添加,有多个的话用productGroupRules.productGroupNum
这样的形式区分,对应上面productGroupRules
里的内容。
另外主要就是:prop
了,注意正常验证表单项是prop
,而这里是:prop
。:prop="'productGroup.'+index+'.num'"
是拼接的形式,前面是v-for绑定的数组,中间是数组索引index,最后是表单项绑定的v-model的名称,然后用点.把它们连接起来。这三项都必须保证正确,错一个都无法验证。
另外就是要注意,v-for绑定的数组也必须绑定在form对象里,注意上面的data里:
form: { activityName: '', status: '1', productGroup: [{num:"",price:""}] } 如果是: form: { activityName: '', status: '1' },
productGroup: [{num: "" ,price: "" }] |
是无法验证的,这一点也要注意。
好了,以上就是解决vue使用Element组件时v-for循环里的表单项验证的解决方案了,希望能帮助到遇到此问题的同学。