element ui form表单验证validateField怎么验证多个字段

let fieldsToValidate = ['indicativePrice', 'name'];
      Promise.all(fieldsToValidate.map(item => {
        return new Promise((resolve, reject) => {
          this.$refs['formRef'].validateField(item, result => {
            resolve(result);
          })
        })
      })).then(result => {
        // result返回各个字段的验证信息，如果为空字符串则认为验证通过
        let msg = result.find(res => {
          return res != '';
        });
        
      })