This trick is for caching a view only if it passes some condition, for example, if there are more than zero items in a list. The same methodology could be used for conditional applying of other decorators.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | # ...
from django.views.decorators.cache import cache_page
def optionally_cached_view(request, *args, **kwargs):
# ...
condition = ...
response = HttpResponse(...)
f = lambda request, *args, **kwargs: response
if condition:
cached_f = cache_page(f, 60*15)
return cached_f(request, *args, **kwargs)
return response
# for comparison, there are analogous examples of uncached and strictly-cached views:
def uncached_view(request, *args, **kwargs):
# ...
return HttpResponse(...)
def cached_view(request, *args, **kwargs):
# ...
return HttpResponse(...)
cached_view = cache_page(cached_view, 60*15)
|
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