AngularJS Route Controller Not Reloading

问题:

I have a very simple AngularJS app that has two routes in it:

#/search
#/results

When I navigate from one route to another everything works as I'd expected. Any resources that are needed are fetched and the content is displayed perfectly.

The problem is when I navigate from one route to the same route (I.e., #/results to #/results) absolutely nothing happens. I understand from the browser's perspective nothing has happened but I'd really like AngularJS to reload the content.

This must be very easy but I'm drawing blanks on this. Can someone please shed some light on this for me?

Thanks,

Jon

回答1:

When you navigate to the same page, the browser ignores it.
Angular.js has nothing to do with the default behavior of <a href="">.

What you can do, is to create a custom directive which:

• use $route.reload() to reload the current view (route).
• use $location.path(newPath) for navigating to other views.

I made an example:

app.directive('xref',function($route, $location){
  return {
    link: function(scope, elm,attr){
      elm.on('click',function(){
        if ( $location.path() === attr.xref ) {
          $route.reload();
        } else {
          scope.$apply(function(){
            $location.path(attr.xref);
          });
        }      
      });
    }
  };
});

In your view just create:

<a xref="/">Home</a>
<a xref="/links">Links</a>

回答2:

You could check if the current route is the same as the "destination" route and call $route's reload() method:

reload()
Causes $route service to reload the current route even if $location hasn't changed.
As a result of that, ngView creates new scope, reinstantiates the controller.

---

E.g.:

In HTML:

<a href="" ng-click="toResults()">Results</a>

In controller:

// ...first have `$location` and `$route` injected...
$scope.toResults = function () {
    var dstPath = '/results';
    if ($location.path() === dstPath) {
        $route.reload()  ;
    } else {
        $location.path(dstPath);
    }
}

回答3:

I used the routeparams property as well to compare the url parameters and it worked like a charm. In case anyone faces this problem again, here's how I resolved it:

 if ($location.path() === '/destination' && $routeParams.Name == Name) {
                $route.reload();
            }
            else {
                $location.path('/destination').search({ Name: Name });
            }