Developing with Django - Speaker Deck

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Developing with Django Daniel Ryan http://dryan.com

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Some Background Lawrence Journal-World Ellington Pycon 2005 • • •

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Sites Powered by Django

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Acronyms Abound MTV - Model • Template • View DRY - Don’t Repeat Yourself ORM - Object-relational Mapping • • •

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MTV vs. MVC Model = Model Template = View View = Controller • • •

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Installing Django Check out http://dryan.com/articles/snow-leopard-64bit- mamp/#python Python Trunk versus Stable Release Third Party Libraries • • • •

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A Django Workflow Create a project Configure settings.py Configure urls.py Create the database tables • • • •

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A Django Workflow Create an app Define your models Create the database tables Define your urls Define your views • • • • •

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Reduce, Reuse, Recycle direct_to_template redirect_to archive_index archive_year archive_month archive_week archive_day archive_today object_detail (date based) object_list object_detail (list based) create_object update_object delete_object Django Generic Views

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Django Templates Just like PHP, except the exact opposite True separation of logic and presentation Global templates vs. app templates Blocks Tags • • • • •

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Built-in Tags autoescape block comment cycle debug extends filter firstof for for ... empty if ifchanged ifequal ifnotequal include load now regroup spaceless ssi templatetag url widthratio with

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Built-in Filters add addslashes capfirst center cut date default default_if_none dictsort dictsortreversed escapejs filesizeformat first fix_ampersands floatformat force_escape get_digit iriencode join last length_is linebreaks linebreaksbr linenumbers ljust lower make_list phone2numeric pluralize pprint removetags rjust safe safeseq slice slugify stringformat striptags time timesince title truncatewords truncatewords_html unordered_list upper urlencode urlize urlizetrunc wordcount wordwrap

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Other Freebies Admin site Authentication Cache system Conditional content processing Comments Content types Cross Site Request Forgery protection Databrowse E-mail (sending) Flatpages Humanize Internationalization Jython support “Local flavor” Pagination Redirects Serialization Sessions Signals Sitemaps Sites Syndication feeds (RSS/Atom) Unicode in Django Web design helpers django.contrib

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Resources http://docs.djangoproject.com irc://irc.freenode.net/django http://thisweekindjango.com/ http://www.djangosnippets.org/ http://code.djangoproject.com/wiki/Tutorials • • • • •