TypeError:无法读取未定义的属性。

[英]TypeError: Cannot read property 'then' of undefined


loginService.islogged() 

Above function return a string like "failed". However, when I try to run then function on it, it will return error of

上面的函数返回一个字符串,比如“failed”。但是,当我尝试运行它的函数时,它会返回错误。

TypeError: Cannot read property 'then' of undefined

and the cursor is indicate right after connected and before .then.

光标是在连接后和之前显示的。

Below is the full function:

以下是全部功能:

var connected=loginService.islogged();
alert(connected);
connected.then(function(msg){
    alert("connected value is "+connected);
    alert("msg.data value is "+msg.data);
    if(!msg.data.account_session || loginService.islogged()=="failed")       
        $location.path('/login');
});

UPDATE

更新

Here is the islogged() function

这是islog()函数。

islogged:function(){
    var cUid=sessionService.get('uid');
    alert("in loginServce, cuid is "+cUid);
    var $checkSessionServer=$http.post('data/check_session.php?cUid='+cUid);
    $checkSessionServer.then(function(){
        alert("session check returned!");
        console.log("checkSessionServer is "+$checkSessionServer);
        return $checkSessionServer;
    });
}

I am certain that the $checkSessionServer will result in a "failed" string. Nothing more.

我确信$checkSessionServer将导致一个“失败”字符串。仅此而已。

2 个解决方案

#1


82  

You need to return your promise to the calling function.

您需要将您的承诺返回给调用函数。

islogged:function(){
    var cUid=sessionService.get('uid');
    alert("in loginServce, cuid is "+cUid);
    var $checkSessionServer=$http.post('data/check_session.php?cUid='+cUid);
    $checkSessionServer.then(function(){
        alert("session check returned!");
        console.log("checkSessionServer is "+$checkSessionServer);
    });
    return $checkSessionServer; // <-- return your promise to the calling function
}

#2


0  

TypeError: Cannot read property 'then' of undefined when calling a Django service using AngularJS.

TypeError:在使用AngularJS调用Django服务时不能读取未定义的属性。

If you are calling a Python service, the code will look like below:

如果您调用的是Python服务,那么代码如下所示:

this.updateTalentSupplier=function(supplierObj){
  var promise = $http({
    method: 'POST',
      url: bbConfig.BWS+'updateTalentSupplier/',
      data:supplierObj,
      withCredentials: false,
      contentType:'application/json',
      dataType:'json'
    });
    return promise; //Promise is returned 
}

We are using MongoDB as the database(I know it doesn't matter. But if someone is searching with MongoDB + Python (Django) + AngularJS the result should come.

我们使用MongoDB作为数据库(我知道这并不重要)。但是如果有人用MongoDB + Python (Django) + AngularJS来搜索,结果就会出现。


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