I do something similar:
class CacheKeyDispatchMixin:
def dispatch(self, *args, **kwargs):
if self.request.method == 'GET' or self.request.method == 'HEAD':
url_to_cache = '/{0}{1}'.format(get_language(),
self.request.get_full_path())
cache_hash = calculate_xxxhash(url_to_cache)
data = cache.get(cache_hash)
if not data:
response = super(CacheKeyDispatchMixin,
self).dispatch(*args, **kwargs)
if response.status_code == 200:
response.render()
cache.set(cache_hash, response)
logger.info('Cache added {0}
({1})'.format(url_to_cache, cache_hash))
return response
logger.info('Cache hit {0} ({1}).'.format(url_to_cache,
cache_hash))
return data
return super(CacheKeyDispatchMixin, self).dispatch(*args, **kwargs)
E.g.
class MyViewSet(CacheKeyDispatchMixin, ViewSet):
Il giorno giovedì 22 marzo 2018 02:51:48 UTC+1, Fover ha scritto:
>
> On the dispatch method . I try to call response.content before cache it.
> It raise django.template.response.ContentNotRenderedError: The response
> content must be rendered before it can be accessed.
>
> 在 2018年3月21日星期三 UTC+8下午8:41:52，Xavier Ordoquy写道：
>>
>> Hi,
>>
>> The message says that you are trying to pickle the response - which is
>> done through the cache.set(key, res,60) call - while the response is not
>> rendered yet.
>> This should be fixed by accessing response.content before calling the
>> cache.set
>>
>> Regards,
>> Xavier Ordoquy,
>> Linovia.
>>
>> Le mardi 20 mars 2018 13:33:33 UTC+1, Fover a écrit :
>>>
>>> I try to cache ListAPIView.I find solution on stackoverflow:
>>>
>>> from django.utils.decorators import method_decoratorfrom
>>> django.views.decorators.cache import cache_page
>>> class ProductListAPIView(generics.ListAPIView):
>>> serializer_class = ProductSerializer
>>>
>>> @method_decorator(cache_page(60))
>>> def dispatch(self, *args, **kwargs):
>>> return super(ProductListAPIView, self).dispatch(*args, **kwargs)
>>>
>>> It works.
>>> But in my project ,the client make GET request with timestamp, it will
>>> be cached , but other user can not hit this cache almost.
>>>
>>> I try to remove timestamp, my code is:
>>>
>>> class ProductListAPIView(generics.ListAPIView):
>>> serializer_class = ProductSerializer
>>>
>>> def dispatch(self, request, *args, **kwargs):
>>> key=gen_cache_key(request)
>>> print(key)
>>> res=cache.get(key)
>>> if res:
>>> return res
>>> res= super().dispatch(request, *args, **kwargs)
>>> cache.set(key,res,60)
>>> return res
>>> def gen_cache_key(request):
>>> params=request.GET
>>> key=request.path
>>> for x in params.lists():
>>> if x[0]!='timestamp':
>>> key+=str(x[0])
>>> key+=str(x[1][0])
>>> return key
>>>
>>> emmm. It raise an error. ContentNotRenderedError >> The response content
>>> must be rendered before it can be pickled.
>>>
>>> How to deal with it ?
>>>
>>
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