how to retive data from server before save

[Jatupoom]

i want to check condition before save   but still not work what im wrong ?

how to solve it

<p>save: Function(e) {</p><p>var currenVar = e.model.id;</p><p>var data;;</p><p>https.get($scope.service URL + currenVar.success(function (result){</p><p>data= result;</p><p>for (item in data){</p><p>if(data[item].id == currenVar  {</p><p>alert('Cannot use this');</p><p>e.preventdefault();</p><p>}</p><p>}</p>

[Jatupoom]

still show alert and save what im wrong with this ?

save: function(e)

var currenID =  e.model.id
$https.get($scrope.servceurl +currenID ).success(function(result){
var data = result;

for (item in data ) {
if(data[item].id == currenID )
{  alert(cannot use) ;
  e.preventDefault();
 }

}
});

[Tsvetina]

Hello Jatupoom,

This happens because the request to the server is asynchronous and there is no logic that would stop the save event from completing. The save completes before the response from the server is actually received. What you can do is:
1. Cancel the default save action.
2. Make the $http.get request.
3. If the conditions are met, manually trigger a DataSource sync.

Something like this:

save: function(e)
    var currenID =  e.model.id;
    e.preventDefault();
    $https.get($scrope.servceurl +currenID ).success(function(result){
        var data = result;

        for (item in data ) {
            if(data[item].id == currenID ){
                 alert(cannot use) ;
                 return; // exit loop and handler
            }
        }
        e.sender.dataSource.sync(); // complete save to server if logic reaches this point
    });
}

Regards,
Tsvetina
Progress Telerik