You could configure your angular app to pass the params to the controller your using for that page.
I would make a routes.js file doing something like:
App.config(['$routeProvider', function($routeProvider){
$routeProvider
.when('/your-route', {
controller: 'yourNGController',
resolve: {
params: ['$route', function($route){
params = {user_id: $route.current.params.user_id}
params.merge({post_id: $route.current.params.post_id})
return params
}]
}
})
}])
Then in your controller - "yourNGController' inject 'params' that you resolved in your route. That should get your the info you need into the controller.
If using newer versions of angular you may also need to include the angular-route.js as $routeProvider was removed from the core angular components.