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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