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Some random Django tips

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September 05, 2013
Technology
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Some random Django tips

My lightning talk from DjangoCon Chicago 2013.

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adrianholovaty

September 05, 2013
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Transcript

  1. Some random Django tips Adrian Holovaty, DjangoCon Chicago 2013

  2. None
  3. None

  4. <body> {% if USER %} Logged in as {{ USER.username

    }} {% else %} <a href=”/login/”>Log in</a> {% endif %} {% for item in items %} <p>{{ item.name }}</p> {% endfor %} </body>

  5. <body> {% if USER %} Logged in as {{ USER.username

    }} {% else %} <a href=”/login/”>Log in</a> {% endif %} {% for item in items %} <p>{{ item.name }}</p> {% endfor %} </body>

  6. Template Rendered to HTML Sent to user

  7. Template Template Rendered to HTML Rendered into another template Rendered

    to HTML (middleware) Sent to user Sent to user

  8. <body> {% raw %} {% if USER %} Logged in

    as {{ USER.username }} {% else %} <a href=”/login/”>Log in</a> {% endif %} {% endraw %} {% for item in items %} <p>{{ item.name }}</p> {% endfor %} </body>

  9. gist.github.com/adrianholovaty

  10. qs = Song.objects.filter(artist=‘Django’) if request.user: qs = qs.filter(user_id=request.user.id)

  11. qs = Song.objects.filter(artist=‘Django’) if request.user: qs = qs.filter(user_id=request.user.id) kwargs =

    {‘artist’: ‘Django’} if request.user: kwargs[‘user_id’] = request.user.id qs = Song.objects.filter(**kwargs)

  12. urlpatterns = patterns(‘’, # ... (r'^(yt|pro)/([-_\w]{1,35})/api/$', views.song_api), (r'^(yt|pro)/([-_\w]{1,35})/edit/$', views.song_edit_form), (r'^(yt|pro)/([-_\w]{1,35})/clear-bars/$',

    views.clear_bars), (r'^(yt|pro)/([-_\w]{1,35})/delete/$', views.song_delete), )

  13. urlpatterns = patterns(‘’, # ... (r'^(?P<src>yt|pro)/(?P<sid>[-_\w]{1,35})/', include(patterns('', (r'^api/$', views.song_api), (r'^edit/$',

    views.song_edit_form), (r'^clear-bars/$', views.clear_bars), (r'^delete/$', views.song_delete), ))), ) urlpatterns = patterns(‘’, # ... (r'^(yt|pro)/([-_\w]{1,35})/api/$', views.song_api), (r'^(yt|pro)/([-_\w]{1,35})/edit/$', views.song_edit_form), (r'^(yt|pro)/([-_\w]{1,35})/clear-bars/$', views.clear_bars), (r'^(yt|pro)/([-_\w]{1,35})/delete/$', views.song_delete), )

  14. class Track(models.Model): # ... version = models.IntegerField() def cache_key(self): return

    ‘track:{0}.{1}’.format(self.id, self.version)
  15. None

  16. control+click