FromPromise.js

<script>
function getStudyMetadata() {
  var promise = $.ajax({
                type: "GET",
                url: "/study/metadata/{id}",
                dataType: "json"
            }).promise();
  return Rx.Observable.fromPromise(promise);
        };
        
$(function () {
  getStudyMetadata()
      .subscribe(
        function (result) {
          mainViewVM = new MainViewViewModel(result);
          @*fire off knockout*@
          ko.applyBindings(mainViewVM);

          initCanvas(mainViewVM.imageWidth, mainViewVM.imageHeight);
          initRowCanvas(mainViewVM);
          },
                function (err) {
                    alert("ERROR:" + err);
                    console.log("ERROR:" + err.error);
                },
                function () {
                    console.log("COMPLETED VM init");
                });
</script>