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"""
Tutorial - Object inheritance
You are free to derive your request handler classes from any base
class you wish. In most real-world applications, you will probably
want to create a central base class used for all your pages, which takes
care of things like printing a common page header and footer.
"""
import cherrypy
class Page:
# Store the page title in a class attribute
title = 'Untitled Page'
def header(self):
return '''
<html>
<head>
<title>%s</title>
<head>
<body>
<h2>%s</h2>
''' % (self.title, self.title)
def footer(self):
return '''
</body>
</html>
'''
# Note that header and footer don't get their exposed attributes
# set to True. This isn't necessary since the user isn't supposed
# to call header or footer directly; instead, we'll call them from
# within the actually exposed handler methods defined in this
# class' subclasses.
class HomePage(Page):
# Different title for this page
title = 'Tutorial 5'
def __init__(self):
# create a subpage
self.another = AnotherPage()
def index(self):
# Note that we call the header and footer methods inherited
# from the Page class!
return self.header() + '''
<p>
Isn't this exciting? There's
<a href="./another/">another page</a>, too!
</p>
''' + self.footer()
index.exposed = True
class AnotherPage(Page):
title = 'Another Page'
def index(self):
return self.header() + '''
<p>
And this is the amazing second page!
</p>
''' + self.footer()
index.exposed = True
import os.path
tutconf = os.path.join(os.path.dirname(__file__), 'tutorial.conf')
if __name__ == '__main__':
# CherryPy always starts with app.root when trying to map request URIs
# to objects, so we need to mount a request handler root. A request
# to '/' will be mapped to HelloWorld().index().
cherrypy.quickstart(HomePage(), config=tutconf)
else:
# This branch is for the test suite; you can ignore it.
cherrypy.tree.mount(HomePage(), config=tutconf)
|
