CherryPy / cherrypy / tutorial /

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 '''
        ''' % (self.title, self.title)
    def footer(self):
        return '''
    # 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() + '''
            Isn't this exciting? There's
            <a href="./another/">another page</a>, too!
        ''' + self.footer() = True

class AnotherPage(Page):
    title = 'Another Page'
    def index(self):
        return self.header() + '''
            And this is the amazing second page!
        ''' + self.footer() = 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)
    # This branch is for the test suite; you can ignore it.
    cherrypy.tree.mount(HomePage(), config=tutconf)
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