? 需求? 初始校验规则

rules: {
  name: [
    { required: true, message: "请输入名称", trigger: "blur" }
  ],
  region: [
    { required: true, message: "请选择类型", trigger: "blur" }
  ]
}? 解决方案
rules: {
  region: [
    { required: true, message: "请选择类型", trigger: "blur" }
  ]
}的form-item为新字段，根据下拉框选择的值来决定是为true

  


  
字段重新加回去rules
rules: {
  name: [{ validator: validateName }],
  region: [
    { required: true, message: "请选择类型", trigger: "blur" }
  ]
}
 data() {
   // 验证活动名称的函数
   let validateName = (rule, value, callback) => {
     // 当活动名称为空值且为必填时，抛出错误，反之通过校验
     if (this.ruleForm.name === "" && this.isHaveTo) {
       callback(new Error("请输入活动名称"));
     } else {
       callback();
     }
   };
   return {
     ruleForm: {
       name: "",
       region: ""
     },
     rules: {
       name: [{ validator: validateName }],
       region: [
         { required: true, message: "请选择类型", trigger: "blur" }
       ]
     }
   };
 },? 完整demo代码