如何正确履行诺言？

Question

In my Angular app, I'm using $odataresource for data retrieval and updates.

I have the following lines:

var measure = $odataresource("http://windows-10:8888/ChangeMeasure/");

            var myMeasure = measure.odata().filter("ID",$scope.ngData[index].ID)
                .single();

I, then, need to issue an update on myMeasure:

myMeasure.$update();

The trouble is - when I issue $update, myMeasure is still an unresolved promise.

What is the proper syntax to call myMeasure.$update(); when myMeasure promise is resolved?

Answer 1

Looking at the documentation of ODataAngularResources try the following:

  var measure = $odataresource("http://windows-10:8888/ChangeMeasure/");
  var myMeasure = measure.odata().filter("ID",$scope.ngData[index].ID)
                  .query(function(data){
                    data[0].$update(); 
                    console.log("Everything went ok!")
                   },function(){
                    console.log("Oops, something wrong happened!")
                   }); 

Of course some more thought should go into sending the resource.update directly after receiving it.