Hi Dilip,
A few days back I stuck at the same issue, then I tried with the queryset
union functionality:
class MultiFilterPlacesListView(ListAPIView):
"""Custom queryset api view. Does not implement pagination"""
pagination_class = None # Import custom pagination if you need the
pagination.
queryset = Places.objects.all()
slice_size = 10 # count limit for each of the source queries
def get_queryset(self):
"""Combine queries from new, editor choice and popular"""
new_qs = self.queryset.filter(new_place=True)[:self.slice_size]
editor_qs = self.queryset.filter(editor_choice=True)[:self.slice_size]
popular_qs = self.queryset.filter(popular=True)[:self.slice_size]
return new_qs.union(editor_qs, popular_qs, all=True) # Output will be
union of the above two querysets
Doc: Django
<https://docs.djangoproject.com/en/1.11/ref/models/querysets/#django.db.models.query.QuerySet.union>
Example: StackOverflow <https://stackoverflow.com/a/50240225/10353116>
Note:
if you are doing the union, then you won't get the pagination. In my case,
I also needed pagination so I wrote custom pagination.
On Sunday, October 6, 2019 at 1:53:46 PM UTC+5:30, Dilipkumar Noone wrote:
>
> Dear Django Users,
>
> I am beginner in Django .
>
> I have multiple generic list views in my django application where each
> list is handled under different navigation item of navigation bar .
>
> Still i need to handle few more list views using class based generic view.
>
> Is there any way to generalize or optimize in handling classbased
> genericlistview which reduces the code size when we need to handle multiple
> lists in django application under each navigation item of navbar.?
>
> *Note*: Each navigation item(webpage) has a list & above the list we
> have a search form with filter button to search for a particular value.
> Each list view handles get_query_set and get_context_data .
>
> *get_query_set *displays to retrieve the list of objects for a
> specific filter in a model when GET request occurs.
>
> *get_context_data* used to display the list of objects and
> checks if request is GET and requested for a page in a list of pages listed
> using pagination.
> If key is a page continues the loop and it returns the context
> with the list of objects for the requested page as a key.
>
>
>
>
> ==========================================================================================================================================
> List1:
>
> class GSPDCList(ListView):
>
>
> List2:
>
> class GSPECList(ListView):
>
> List3:
> =================:
>
> List4:
> ================(ListView):
>
> *This concept i need to apply in my django app with multiple class based
> generic views where each listview specific to diff model and filter
> options.*
>
> * So please suggest and optimized way of handling this requirement
> to reduce the code size.*
>
>
> Regards,
> N.Dilip Kumar.
>
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