Angular does not automatically update the template

I've been grappling with this issue for quite some time now and I can't seem to figure out why the angular template is failing to refresh when the scope changes. Here's a link to my JSFiddle - http://jsfiddle.net/HB7LU/2591/ (please note that it's not functioning properly due to an ajax request for a JSON file (http://pastebin.com/0nSaM6pB). Here's a simplified version of the code:

function MyCtrl($scope, $location, $routeParams) {
    $scope.loadLinks = function() {
        $scope.elementData = SOME_REQUEST_RESPONSE;
        $scope.parseLinks();
    }
    if(typeof $scope.elementData == "undefined") $scope.loadLinks();

    $scope.parseLinks = function() {
        if(typeof $scope.elementData == "undefined") return;
        $scope.elements = [];

        $.each($scope.elementData, function(index, value) {
            // SOME PARSING
            $scope.elements.push(SOME_PARSED_OBJECT);
        });
    }
    $scope.parseLinks();
}

This code works as follows:

  1. I fetch the JSON file and store it in elementData
  2. I then execute parseLinks(), iterate over it, and make necessary changes
  3. The modified data is stored in elements
  4. In the template, I use ng-repeat to loop through the parsed object

The issue arises when the page transitions in my single-page application. The parseLinks() function runs correctly each time, updating the elements, but the template fails to re-render. I attempted to use $apply but encountered a strange $digest already in progress error, which makes me question whether the template is actually being refreshed.

The goal is to dynamically show/hide different menu links on various sub-pages. The initial display works fine, as does refreshing the page on a sub-page.

Thank you for any assistance you can provide!

Answer №1

Set $scope.elementData to null initially before populating it with data from an HTTP request and don't forget to return :

 $scope.loadLinks = function() {

      $scope.elementData=null; //update

    $scope.elementData = SOME_REQUEST_RESPONSE;
    $scope.parseLinks();
}

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