return a ``Response`` object. You'll learn more about:doc:`controllers</controller>`

in their own section, including how to return JSON responses.

..tip::

To create controllers faster, let Symfony generate it for you:

..code-block::terminal

.. _annotation-routes:

Annotation Routes

That's it! The page - ``http://localhost:8000/lucky/number`` will work exactly

like before! Annotations are the recommended way to configure routes.

..tip::

To create controllers faster, let Symfony generate it for you:

..code-block::terminal

.. _flex-quick-intro:

Auto-Installing Recipes with Symfony Flex

You should see your*one* routeso far:

You should see your`app_lucky_number` routeat the very top:

Name Method Scheme Host Path

app_lucky_number ANY ANY ANY /lucky/number

You will also see debugging routes below `app_lucky_number` -- more on the debugging routes in the next section.

You'll learn about many more commands as you continue!

The Web Debug Toolbar: Debugging Dream

One of Symfony's *killer* features is the Web Debug Toolbar: a bar that displays

a *huge* amount of debugging information along the bottom of your page while developing.

To use the web debug toolbar, install the Profiler pack first:

..code-block::terminal

a *huge* amount of debugging information along the bottom of your page while developing. This is all

included out of the box using a package called ``symfony/profiler-pack``.

As soon as this finishes, refresh your page. You should see a black bar along the

bottom of the page. You'll learn more about all the information it holds along the

way, but feel free to experiment: hover over and click the different icons to get

information about routing, performance, logging and more.

This is also a great example of Flex! After downloading the profiler package,

the recipe created several configuration files so that the web debug toolbar

worked instantly.

You will see a black bar along the bottom of the page. You'll learn more about all the information it holds

along the way, but feel free to experiment: hover over and click

the different icons to get information about routing, performance, logging and more.

Rendering a Template

a template. Fortunately, Symfony comes with `Twig`_: a templating language that's

easy, powerful and actually quite fun.

First, install Twig:

..code-block::terminal

Second, make sure that ``LuckyController`` extends Symfony's base

Make sure that ``LuckyController`` extends Symfony's base

:class:`Symfony\\Bundle\\FrameworkBundle\\Controller\\AbstractController` class:

..code-block::diff