问题
I'm currently learning how to use the class-based views in django 1.3. I'm trying to update an application to use them, but I still don't uderstand very well how they work (and I read the entire class-based views reference like two or three times EVERY day).
To the question, I have an space index page that needs some extra context data, the url parameter is a name (no pk, and that can't be changed, it's the expected behaviour) and the users that don't have that space selected in their profiles can't enter it.
My function-based code (working fine):
def view_space_index(request, space_name):
place = get_object_or_404(Space, url=space_name)
extra_context = {
'entities': Entity.objects.filter(space=place.id),
'documents': Document.objects.filter(space=place.id),
'proposals': Proposal.objects.filter(space=place.id).order_by('-pub_date'),
'publication': Post.objects.filter(post_space=place.id).order_by('-post_pubdate'),
}
for i in request.user.profile.spaces.all():
if i.url == space_name:
return object_detail(request,
queryset = Space.objects.all(),
object_id = place.id,
template_name = 'spaces/space_index.html',
template_object_name = 'get_place',
extra_context = extra_context,
)
return render_to_response('not_allowed.html', {'get_place': place},
context_instance=RequestContext(request))
My class-based view (not working, and no idea how to continue):
class ViewSpaceIndex(DetailView):
# Gets all the objects in a model
queryset = Space.objects.all()
# Get the url parameter intead of matching the PK
slug_field = 'space_name'
# Defines the context name in the template
context_object_name = 'get_place'
# Template to render
template_name = 'spaces/space_index.html'
def get_object(self):
return get_object_or_404(Space, url=slug_field)
# Get extra context data
def get_context_data(self, **kwargs):
context = super(ViewSpaceIndex, self).get_context_data(**kwargs)
place = self.get_object()
context['entities'] = Entity.objects.filter(space=place.id)
context['documents'] = Document.objects.filter(space=place.id)
context['proposals'] = Proposal.objects.filter(space=place.id).order_by('-pub_date')
context['publication'] = Post.objects.filter(post_space=place.id).order_by('-post_pubdate')
return context
urls.py
from e_cidadania.apps.spaces.views import GoToSpace, ViewSpaceIndex
urlpatterns = patterns('',
(r'^(?P<space_name>\w+)/', ViewSpaceIndex.as_view()),
)
What am I missing for the DetailView to work?
回答1:
The only problem I see in your code is that your url's slug parameter is named 'space_name'
instead of 'slug'
. The view's slug_field
attribute refers to the model field that will be used for slug lookup, not the url capture name. In the url, you must name the parameter 'slug'
(or 'pk'
, when it's used instead).
Also, if you're defining a get_object
method, you don't need the attributes queryset
, model
or slug_field
, unless you use them in your get_object
or somewhere else.
In the case above, you could either use your get_object
as you wrote or define the following, only:
model = Space
slug_field = 'space_name'
来源:https://stackoverflow.com/questions/6008808/how-to-do-a-detailview-in-django-1-3