项目中经常遇到，改变某些条件，才触发验证， 否则不进行验证
比如当即时配送为是时，地址必填， 通过修改修改rules对象来实现
<template>
<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="即时配送" prop="delivery">
<el-switch v-model="ruleForm.delivery" @change="changeDelivery"></el-switch>
</el-form-item>
<div v-if="ruleForm.delivery">
<el-form-item label="地址" prop="address">
<el-input v-model="ruleForm.address"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm('ruleForm')">保存</el-button>
<el-button @click="resetForm('ruleForm')">重置</el-button>
</el-form-item>
</div>
</el-form>
</template>
<script>
export default {
data() {
return {
ruleForm: {
name: '',
},
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' }
],
}
};
},
methods: {
// 是否需要配送
changeDelivery(data) {
if (data) {
this.rules = Object.assign(this.rules, {
address: [
{ required: true, message: '请填写活动地址', trigger: 'blur' }
],
})
} else {
delete this.rules.address
}
},
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>
