title: Angular 2: Route parameter changes, reload the same page?
body: <p>I have a route with a parameter, when going to the page /users/123 where 123 is the parameter the ngOnInit is called, I get my parameter and I call my method to get the user.</p>
  
  <p>However, when I'm on that page and I click a second link /users/456 then the ngOnInit is not called anymore (because that page is already instantiated). So without ngOnInit I can't get the route parameter and can't call my method to get the user.</p>
  
  <p>If I go to /users/123, then to /home, then to /users/456, it works obviously.</p>
  
  <p>What do I have to use to make sure the function that gets the parameter and gets the user is ALWAYS called even if I'm already on the same page?</p>