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61 lines
2.2 KiB
Python
61 lines
2.2 KiB
Python
"""
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Tutorial - The default method
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Request handler objects can implement a method called "default" that
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is called when no other suitable method/object could be found.
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Essentially, if CherryPy2 can't find a matching request handler object
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for the given request URI, it will use the default method of the object
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located deepest on the URI path.
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Using this mechanism you can easily simulate virtual URI structures
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by parsing the extra URI string, which you can access through
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cherrypy.request.virtualPath.
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The application in this tutorial simulates an URI structure looking
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like /users/<username>. Since the <username> bit will not be found (as
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there are no matching methods), it is handled by the default method.
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"""
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import os.path
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import cherrypy
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class UsersPage:
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@cherrypy.expose
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def index(self):
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# Since this is just a stupid little example, we'll simply
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# display a list of links to random, made-up users. In a real
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# application, this could be generated from a database result set.
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return '''
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<a href="./remi">Remi Delon</a><br/>
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<a href="./hendrik">Hendrik Mans</a><br/>
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<a href="./lorenzo">Lorenzo Lamas</a><br/>
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'''
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@cherrypy.expose
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def default(self, user):
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# Here we react depending on the virtualPath -- the part of the
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# path that could not be mapped to an object method. In a real
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# application, we would probably do some database lookups here
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# instead of the silly if/elif/else construct.
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if user == 'remi':
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out = 'Remi Delon, CherryPy lead developer'
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elif user == 'hendrik':
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out = 'Hendrik Mans, CherryPy co-developer & crazy German'
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elif user == 'lorenzo':
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out = 'Lorenzo Lamas, famous actor and singer!'
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else:
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out = 'Unknown user. :-('
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return '%s (<a href="./">back</a>)' % out
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tutconf = os.path.join(os.path.dirname(__file__), 'tutorial.conf')
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if __name__ == '__main__':
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# CherryPy always starts with app.root when trying to map request URIs
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# to objects, so we need to mount a request handler root. A request
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# to '/' will be mapped to HelloWorld().index().
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cherrypy.quickstart(UsersPage(), config=tutconf)
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