el-form-item 的验证状态在 validateState 属性中,该属性的值, 默认为: 空字符串 ,验证通过为 success , 验证失败为 error 如果需要在一开始就要通过表单数据的验证状态,决定操作按钮(如
el-form-item 的验证状态在
validateState
属性中,该属性的值, 默认为:空字符串,验证通过为success
, 验证失败为error
如果需要在一开始就要通过表单数据的验证状态,决定操作按钮(如:保存)是否禁用,那么需要注意两点:
- 需要通过如下方式获取验证状态
// this.$refs.validateForm 表示一个el-form // this.$refs.validateForm.fields 表示所有el-form-item // validateStateArr结果大概会是:['','success','error'] const validateStateArr = this.$refs.validateForm.fields.map((item) => { return item.validateState; })
- 有两种情况表示验证不通过:
- A情况:el-form-item的validateState为
error
. - B情况:el-form-item存在验证规则,但validateState为空字符串.
- A情况:el-form-item的validateState为
示例代码:
<template> <div> <el-form ref="validateForm" :model="formData" @validate="onValidate" :status-icon="true" > <el-form-item label="姓名" :rules="ruleObj.name" prop="name"> <el-input v-model="formData.name"></el-input> </el-form-item> <el-form-item label="状态" :rules="ruleObj.status" prop="status"> <el-select v-model="formData.status"> <el-option :value="1" label="启用"></el-option> <el-option :value="2" label="禁用"></el-option> </el-select> </el-form-item> <el-form-item label="账号" :rules="ruleObj.account" prop="account"> <el-input v-model="formData.account"></el-input> </el-form-item> <el-form-item label="开始日期" :rules="ruleObj.beginDate" prop="beginDate" > <el-date-picker type="date" v-model="formData.beginDate" placement="bottom-start" value-format="yyyy-MM-dd" @change="(values) => onChange(values, 'endDate')" ></el-date-picker> </el-form-item> <el-form-item label="结束日期" :rules="ruleObj.endDate" prop="endDate"> <el-date-picker type="date" v-model="formData.endDate" placement="bottom-start" value-format="yyyy-MM-dd" @change="(values) => onChange(values, 'beginDate')" ></el-date-picker> </el-form-item> </el-form> <el-button type="primary" :disabled="!validatePass" @click="onSave"> 保存 </el-button> </div> </template> <script> export default { name: "StyleTextPage", data() { return { formData: { status: null, name: null, account: null, endDate: null, beginDate: null, }, // 表单是否整体通过验证 validatePass: false, // 账号ajax是否正处于验证中 accountAjaxValidating: false, ruleObj: { endDate: [ { validator: (rule, value, callback) => { if (this.formData.beginDate === this.formData.endDate) { return callback(new Error("开始日期不能等于结束日期")); } else { // 如果即在endDate验证成功时,立即触发beginDate的验证,且在beginDate验证成功时,立即触发endDate的验证会导致验证死循环,因此这种验证,只能在change事件中触发 // this.$nextTick(() => { // this.$refs.validateForm.validateField("beginDate"); // }); return callback(); } }, trigger: "change", }, ], beginDate: [ { validator: (rule, value, callback) => { if (this.formData.beginDate === this.formData.endDate) { return callback(new Error("开始日期不能等于结束日期")); } else { // 如果即在beginDate验证成功时,立即触发endDate的验证,且在endDate验证成功时,立即触发beginDate的验证会导致验证死循环,因此这种验证,只能在change事件中触发 // this.$nextTick(() => { // this.$refs.validateForm.validateField("endDate"); // }); return callback(); } }, trigger: "change", }, { required: true, message: "必填", trigger: "change" }, ], name: [], account: [ { required: true, message: "必填" }, { validator: (rule, value, callback) => { console.log("自定义账号校验"); this.accountAjaxValidating = true; // 进入账号自定义验证方法,则将表单设置为验证不通过(用来保证setTimeout休眠期间,保存按钮是不可用的),最中是否通过由setTimeout的结果决定 this.validatePass = false; setTimeout(() => { console.log("获取到验证结果"); this.accountAjaxValidating = false; if (value === "111") { return callback(new Error("账号已存在")); } else { return callback(); } }, 2000); }, trigger: "blur", }, ], status: [{ required: true, message: "必填" }], }, }; }, mounted() { console.log(this.$refs.validateForm.fields); this.updateFormValidateStatus(); }, methods: { onChange(val, relValidateField) { console.log(val, relValidateField); this.$refs.validateForm.validateField(relValidateField); }, updateFormValidateStatus() { let validateStateArr = []; if (this.$refs.validateForm) { validateStateArr = this.$refs.validateForm.fields.map((item) => { if (item.validateState) { return item.validateState; } else if (item.rules && item.rules.length > 0) { return "error"; } else { return "success"; } }); } this.validatePass = !this.accountAjaxValidating && validateStateArr.find((item) => item === "error") !== "error"; }, onValidate(...args) { console.log("args", args); this.updateFormValidateStatus(); }, async onSave() { try { await this.$refs.validateForm.validate(); } catch (e) { console.error(e); } }, }, }; </script> <style scoped></style>
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