CBV based navigation Danilo Bargen Djangocon Zürich, 2012/06/05 

Setup $ pip i ns t a ll django−tabination 

Creating views from tabination . views import TabView class SpamTab(TabView ) : _is_tab = True tab_id = ’spam’ tab_group = ’mainnav ’ tab_label = ’Spam’ template_name = ’spam. html ’ 

Another view class HamTab(TabView ) : _is_tab = True tab_id = ’ham’ tab_group = ’mainnav ’ tab_label = ’Ham’ template_name = ’ham. html ’ 

urls.py urlpatterns = patterns ( ’ ’ , url ( r ’^spam/$ ’ , views .SpamTab. as_view ( ) ) , url ( r ’^ ham/$ ’ , views .HamTab. as_view ( ) ) , ) 

Spam Template 

Ham Template 

Navigation Template blocks/tabnavigation.html {{ tabs }} and {{ current_tab_id }} 

CSS #tab_navigation l i . active a { font−weight : bold ; color : red ; } 

Result 

DRY? class SpamTab(TabView ) : _is_tab = True tab_id = ’spam’ tab_group = ’mainnav ’ tab_label = ’Spam’ template_name = ’spam. html ’ class HamTab(TabView ) : _is_tab = True tab_id = ’ham’ tab_group = ’mainnav ’ tab_label = ’Ham’ template_name = ’ham. html ’ 

DRY! class BaseTab(TabView ) : tab_group = ’mainnav ’ class SpamTab(BaseTab) : _is_tab = True tab_id = ’spam’ tab_label = ’Spam’ template_name = ’spam. html ’ class HamTab(BaseTab) : _is_tab = True tab_id = ’ham’ tab_label = ’Ham’ template_name = ’ham. html ’ 

Extending BaseTab class BaseTab(TabView ) : tab_group = ’mainnav ’ tab_classes = [ ’main−navigation−tab ’ ] def get_context_data ( self , **kwargs ) : context = super(BaseTab, self ) . get_context_data (**kwargs) context [ ’spam’ ] = "SPAM −EVERYWHERE! " return context 

Visibility control class HiddenTab(BaseTab) : _is_tab = True tab_id = ’hidden ’ template_name = ’hidden . html ’ # look mah, no tab_label ! 

Visibility control class SecretTab(BaseTab) : _is_tab = True . . . @property def tab_visible ( self ) : current_tab = self . current_tab user = current_tab . request . user return user . is_authenticated () 

Nice things Implicit registry Extensible Flexible Mixins 

Not so nice things Metaclass magic CBVs, Complexity Other tab classes are instantiated but not dispatched Currently no support for nested tabs 

Ugly things Ticket #16074: Generic mixins won’t work before Django 1.5 

Thanks Github: http://github.com/dbrgn/django-tabination Docs: http://django-tabination.readthedocs.org/ Slides: https://speakerdeck.com/dbrgn/django-cbv-based- navigation Twitter: @dbrgn Github: @dbrgn