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.. _web_getting_started:
Getting Started
===============
Just like any application or system built with circuits, a circuits.web
application follows the standard Component based design and structure
whereby functionality is encapsulated in components. circuits.web
itself is designed and built in this fashion. For example a circuits.web
Server's structure looks like this:
.. image:: ../images/CircuitsWebServer.png
To illustrate the basic steps, we will demonstrate developing
your classical "Hello World!" applications in a web-based way
with circuits.web
To get started, we first import the necessary components:
.. code-block:: python
from circutis.web import Server, Controller
Next we define our first Controller with a single Request Handler
defined as our index. We simply return "Hello World!" as the response
for our Request Handler.
.. code-block:: python
class Root(Controller):
def index(self):
return "Hello World!"
This completes our simple web application which will respond with
"Hello World!" when anyone accesses it.
*Admittedly this is a stupidly simple web application! But circuits.web is
very powerful and plays nice with other tools.*
Now we need to run the application:
.. code-block:: python
(Server(8000) + Root()).run()
That's it! Navigate to: http://127.0.0.1:8000/ and see the result.
Here's the complete code:
.. code-block:: python
:linenos:
from circuits.web import Server, Controller
class Root(Controller):
def index(self):
return "Hello World!"
(Server(8000) + Root()).run()
Have fun!
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