AngularJS orderby with empty field

Question

I am ordering a my data and its working all correcty except some fields are empty or have no value. When ordered these empty field come up first. For example when ordering n

Answer 1

@Klaster_1 was really on to something but as soon as I needed a nested value the filter stopped working. Also, if I was reverse ordering I still wanted my null values to show up before 0. I added $parse to take care of the nested keys and added a reverse parameter to I knew when to put the null values at the top.

.filter("emptyToEnd", function ($parse) {
    return function (array, key, reverse) {
        if(!angular.isArray(array)) return;
        var keyFn = $parse(key);
        var present = [];
        var empty = [];

        angular.forEach(array, function(item){
          var val = keyFn(item);
          if(angular.isUndefined(val) || val === null) {
            empty.push(item);
          } else {
            present.push(item);
          }
        });

        if (reverse) {
          return present.concat(empty);
        } else {
          return empty.concat(present);
        }
    };
});