re-bind href tag on click

I am new to Ember and I work on big legacy project. The issue is that URI fooUri in the following template is bound only once and fooUri stays the same:

<a >
    <span class="appicon-table appicon"></span>
</a>

Controller code:

App.barController = Ember.ObjectController.extend({
    . . .
    fooUri: function() {
        var fooOptions = $.extend({}, this.model.foo.options);
        . . .
        var querystring = encodeURIComponent($.param(fooOptions));
        var uri = '#' + router.generate( ..., querystring, ...);
        return uri;
    }.property('fooMeasureId'),
    . . .
})

E.g. I need uri will be recalculated each time I click on link because this.model.foo.options is changed.

Thank you