Pagination DRF not working well - django

Question

I have a little problem with pagination when I put the default pagination in my project, somethings pages work in others pages not working for example:
this is my file settings.py for all my project
REST_FRAMEWORK = {
'DEFAULT_PAGINATION_CLASS': 'apicolonybit.notification_clbt.NotificationPagination.PaginationList'}
this is my Configuration app inside my project: myproject / Configuration
class ConfigurationsList(generics.ListAPIView):
"""
list configuration with current user authenticated.
"""
queryset = Configuration.objects.all()
serializer_class = ConfigurationSerializer
when I run this part in my postman, working well, but when I try to run in another module like this:
class TransactionListHistory(generics.ListAPIView):
# queryset = TransactionHistory.objects.all()
serializer_class = TransactionHistorySerializer
pagination_class = PaginationList
page_size = 2
page = 1
def get_object(self, current_user):
# User.objects.get(id=pk)
return TransactionHistory.objects.filter(agent_id=current_user.id).order_by('-id')
#classmethod
def get_object_client(cls, current_user, trans):
# User.objects.get(id=pk)
return TransactionHistory.objects.filter(user_id=current_user.id).order_by('-id')
def get(self, request, format=None):
current_user = request.user
status_trans = 6
agent_user = 2
client_user = 1
trans = {
'status': status_trans
}
typeusers = Profile.objects.get(user_id=current_user.id)
# actions agent user = show all transaction from all client users
if typeusers.type_user == agent_user:
list_trans_init = self.get_object(current_user)
serializer = TransactionHistorySerializer(list_trans_init, many=True)
get_data = serializer.data
# actions normal user (client user) = just see transactions from self user
if typeusers.type_user == client_user:
list_trans_init = self.get_object_client(current_user, trans)
serializer = TransactionHistorySerializer(list_trans_init, many=True)
get_data = serializer.data
# if not PaginationList.get_next_link(self):
# return JsonResponse({'data': get_data}, safe=False, status=status.HTTP_200_OK)
return self.get_paginated_response(get_data)
my custom file pagination like this
class PaginationList(PageNumberPagination):
page_size = 2 # when show me an error I added
offset = 1 # when show me an error I added
limit = 10 # when show me an error I added
count = 10 # when show me an error I added
page = 1 # when show me an error I added
def get_paginated_response(self, data):
return Response({
'links': {
'next': self.get_next_link(),
'previous': self.get_previous_link()
},
'count': self.page.paginator.count,
'results': data
})
the variables page_size and etc, then show me an error like PaginationList is not object page, I added this page_size and pass other error like PaginationList is not object offset and again added var.
well the last error show me is like this 'int' object has no attribute 'has_next'
please help me, how to add my custom pagination in my class TransactionListHistory
thanks for your attention.

Answer 1

You are using self.get_paginated_response() in wrong way.
from rest_framework.response import Response
class TransactionListHistory(generics.ListAPIView):
# Your code
def get(self, request, *args, **kwargs):
queryset = do_something_and_return_QuerySet() # do some logical things here and
page = self.paginate_queryset(queryset)
if page is not None:
serializer = self.get_serializer(page, many=True)
return self.get_paginated_response(serializer.data)
serializer = self.get_serializer(queryset, many=True)
return Response(serializer.data)
the do_something_and_return_QuerySet() is fucntion or logic of you, which return a QuerySet.
Example
class TransactionListHistory(generics.ListAPIView):
# Your code
def get(self, request, *args, **kwargs):
queryset = TransactionHistory.objects.filter(user_id=request.user.id)
page = self.paginate_queryset(queryset)
if page is not None:
serializer = self.get_serializer(page, many=True)
return self.get_paginated_response(serializer.data)
serializer = self.get_serializer(queryset, many=True)
return Response(serializer.data)