未定义（类型[] DataReponse没有字段或方法）

问题描述：

I'm trying to compile the following piece of code

    var result []DataReponse
    if result.Commenter == "teacher"{
        sender = models.CommentUser{
            Name:result.UserName,
            Email:result.UserEmail,
        }
    }else{
        sender = models.CommentUser{
            Name:result.ChildName,
            Email:result.ChildEmail,
    }

I am receiving the error result.Commenter undefined (type []DataReponse has no field or method Commenter) here is my struct

//DataReponse is the structure of the response
type DataReponse struct{
  CommentText   string              `json:"comment_text"`
  Commenter     string              `json:"commenter"`
  ChildEmail    core.NullString     `json:"child_email"`
  ChildName     core.NullString       `json:"child_name"`
  UserName      core.NullString       `json:"user_name"`
  UserEmail     core.NullString       `json:"user_email"`
}

how can i use result values ?

我正在尝试编译以下代码 p>

  var result [] DataReponse 
 if result.Commenter ==“ teacher” {
 sender = models.CommentUser {
名称：result.UserName，
 Email：result.UserEmail，
} 
} else {  
发件人=模型。CommentUser{
名称：result.ChildName，
电子邮件：result.ChildEmail，
} 
  code>  pre> 
 
 我收到错误 result.Commenter未定义（类型[] DataReponse没有字段或方法Commenter） code>这是我的结构 p> 
 
 
  // DataReponse是响应的结构\  ntype DataReponse struct {
 CommentText字符串`json：“ comment_text”`
 Commenter字符串`json：“ commenter”`
 ChildEmail core.NullString`json：“ child_email”`
 ChildName core.NullString`json：“ child_name  “`
 UserName core.NullString`json：” user_name“`
 UserEmail core.N  ullString`json：“ user_email”`
} 
  code>  pre> 
 
 如何使用结果值？ p> 
  div>

答

[]DataReponse is a slice of DataReponses, i.e., there may be more than one response (or none). You could use a for loop to run some code for each struct DataReponse returned. I would consider doing the tour. (Also, perhaps you meant DataResponse, with two "s"es, but of course that doesn't matter to Go as long as you use the same name consistently.)

答

As explained by twotwotwo you are working with a slice. Loop over it like so.

    for _, data := range result {
       if data.Commenter == "teacher" {
         ...   
        }
    }

未定义（类型[] DataReponse没有字段或方法）

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