Angular.js ui-router directive to Reload current state with different params

uiSrefParams.js

app.directive("uiSrefParams", function($state) {
  return {
    link: function(scope, elm, attrs) {
      var params;
      params = scope.$eval(attrs.uiSrefParams);
      return elm.bind("click", function(e) {
        var button;
        if (!angular.equals($state.params, params)) {
          button = e.which || e.button;
          if ((button === 0 || button === 1) && !e.ctrlKey && !e.metaKey && !e.shiftKey) {
            scope.$evalAsync(function() {
              return $state.go(".", params);
            });
            return e.preventDefault();
          }
        }
      });
    }
  };
});

Example

Change language:
<a ui-sref-params="{lang: 'en'}">english</a>
<a ui-sref-params="{lang: 'ru'}">russian</a>