loginService.islogged() Above function return a string like "failed". However, when I try to run then function on it, it will return error of
TypeError: Cannot read property 'then' of undefined and the cursor is indicate right after connected and before .then.
Below is the full function:
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
Here is the islogged() function
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.
3 Answers
You need to return your promise to the calling function.
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 } TypeError: Cannot read property 'then' of undefined when calling a Django service using AngularJS.
If you are calling a Python service, the code will look like below:
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.
Return the promise value inside the function
return new Promise((done, err) => { ...... }) 
