filter.js

baseApp.filter("emptyToEnd", function () {
    return function (array, key) {
        var keys = key.split(".");
        if (!angular.isArray(array)) return;
        var present = array.filter(function (item) {
            if(keys.length > 1) {
                return item[keys[0]][keys[1]];

            } else {
                return item[keys[0]];
            }

        });
        var empty = array.filter(function (item) {
            if(keys.length > 1) {
                return !item[keys[0]][keys[1]];

            } else {
                return !item[keys[0]];
            }
        });
        return present.concat(empty);
    };
});