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<title>CherryPy tutorial</title> |
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<meta name="author" content="Remi Delon" /> |
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<h1>CherryPy tutorial</h1> |
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<h2>EuroPython 2005</h2> |
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</div> |
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<div class="presentation"> |
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<div class="slide"> |
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<h1>CherryPy tutorial</h1> |
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<h3>Remi Delon</h3> |
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<h4>remi@cherrypy.org</h4> |
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<h4><a href="http://www.cherrypy.org/" rel="external">http://www.cherrypy.org</a></h4> |
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<div class="handout"></div> |
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</div> |
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<div class="slide"> |
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<h1>Introduction</h1> |
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<ul> |
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<li>Pythonic, object-oriented web development framework</li> |
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<li>Runs everywhere python runs</li> |
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<li>Requires Python-2.3 or later</li> |
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<li>BSD license</li> |
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<li>Version 2.1 (used in this tutorial) coming soon</li> |
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</ul> |
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<div class="slide"> |
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<h1>Brief history of CherryPy</h1> |
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<ul> |
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<li>Jun 2002: CherryPy-0.1 released: users wrote .cpy files made of python code + some extensions (ex: CherryClass), then compiled them into one .py file ... bad idea (too unpythonic) ... some interest, but quite limited</li> |
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<li>Apr 2004: Last "CP1" release</li> |
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<li>Sep 2004: First "CP2" release: pure python code, no more compilation step, templating system separated from the core ... much more interest from the community</li> |
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<li>In a few weeks: CherryPy-2.1 release ... another big step forward</li> |
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</ul> |
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<h1>Hello, world</h1> |
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<ul> |
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<li>Exposing objects</li> |
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<li>Built-in HTTP server</li> |
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<li>"development" environment: autoreload, debug information |
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</ul> |
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<h1>Hello, you</h1> |
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<ul> |
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<li>Passing parameters to methods</li> |
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<li>All parameters (except file uploads) are passed a strings or lists of strings</li> |
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<li>GET or POST parameters are passed the same way</li> |
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</ul> |
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<div class="slide"> |
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<h1>Configuring CherryPy</h1> |
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<ul> |
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<li>Through config file</li> |
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<li>Programmatically</li> |
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<h1>Url -> object mapping</h1> |
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<ul> |
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<li>Using multiple methods</li> |
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<li>Using multiple classes</li> |
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<li>Using the "default" method</li> |
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<li>Using positional arguments for REST URLs</li> |
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</ul> |
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<h1>Using OOP</h1> |
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<ul> |
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<li>Example: using OOP to provide a constant header/footer</li> |
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<h1>Handling file uploads</h1> |
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<ul> |
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<li>File is stored on disk as a temp file</li> |
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<li>CherryPy returns a cgi.FieldStorage instance</li> |
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<li>Available attributes: file, filename, type, ...</li> |
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</ul> |
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<h1>Manipulating cpg.request and cpg.response</h1> |
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<ul> |
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<li>Ex: Reading the Host header from the request</li> |
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<li>Ex: Setting the response Content-Type</li> |
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</ul> |
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<h1>Using generators</h1> |
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<ul> |
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<li>Returning a generator instead of a string</li> |
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<li>Returning a file object</li> |
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<li>Set Content-Length manually to stream data to the browser "on-the-fly"</li> |
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<h1>Using filters</h1> |
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<ul> |
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<li>Ex: gzipFilter (uses generators)</li> |
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<li>Ex: encodingFilter, decodingFilter</li> |
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<li>Ex: staticContentFilter</li> |
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<li>Other filters: XML-RPC, Tidy, nsgmls, virtual host, caching, ...</li> |
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<h1>Using sessions</h1> |
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<ul> |
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<li>Sessions are just a regular filter (sessionFilter)</li> |
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<li>Provides dictionary-like objects for storing session data</li> |
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<li>The default one is cherrypy.sessions.default</li> |
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</ul> |
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<h1>Deploying your site for production</h1> |
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<ul> |
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<li>Built-in HTTP server: OK, but no HTTP/1.1 or SSL (yet)</li> |
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<li>WSGI interface allows us to use a variety of setups: mod_python, FastCGI, IIS, ...</li> |
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<li>Another option: behind Apache with mod_rewrite or mod_proxy (use Apache to serve static data directly)</li> |
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<div class="slide"> |
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<h1>What's not included in CherryPy</h1> |
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<ul> |
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<li>A form handling module</li> |
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<li>A templating system</li> |
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<li>An authentication system</li> |
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<li>... CherryPy is deliberately staying low-level</li> |
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<li>... If you need a higher-level framework, consider Subway or CherryObject (coming soon)</li> |
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</ul> |
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<h1>References</h1> |
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<ul> |
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<li>http://www.cherrypy.org</li> |
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<li>Documentation: tutorial, FAQ, recipes, ...</li> |
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<li>Mailing lists</li> |
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<li>IRC channel: #cherrypy on OFTC</li> |
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</ul> |
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<div class="slide"> |
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<h1>Near future of CherryPy</h1> |
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<ul> |
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<li>CherryPy-2.1 coming out soon (*lots* of new features)</li> |
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<li>CherryPy book (online only for now) coming soon</li> |
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<li>Lots of activity at the moment ... More and more contributors</li> |
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<li>But we could still use more: feel free to help :-)</li> |
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</ul> |
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<h1>Any questions ?</h1> |
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