In this chapter, we wrote a Controller that returns a render array. We know from the preceding chapter that this is picked up by the theme system and turned into a response. In Chapter 4, Theming, we will go into a bit more detail and see how this process is done. However, this render pipeline can also be bypassed if the Controller returns a response directly. Let's consider the following example:
return new Response('my text');
This will bypass much of Drupal, in fact, and return a blank white page with only the "my text" string on it. The Response class we're using is from the Symfony HTTP Foundation component.
However, we also have a handy RedirectResponse class that we can use, and it will redirect the browser ...
