my pagination seems not to be working - DRF problem - django

Question

I am trying to create an endpoint that returns a list of posts. I want lets say 2 posts per page (for testing only! I know its not that big of a number to cause problem!).
here is my
views.py
class blogsViewSet(ModelViewSet):
queryset = Posts.objects.all()
serializer_class = PostSerializer
pagination_class = pagination.CustomPagination
def list(self, request):
data = request.data
uid = data['uid']
context = {"user": uid}
blogs = Posts.objects.all()
serializer = PostSerializer(blogs, many= True, context= context)
return Response(serializer.data)
here is my
serializers.py
class PostSerializer(ModelSerializer):
isLiked = serializers.SerializerMethodField(method_name='check_react')
totalLikes = serializers.SerializerMethodField(method_name='get_likes')
totalComments = serializers.SerializerMethodField(method_name='get_comments')
def check_react(self, post):
userObj = Users.objects.get(userID = self.context['user'])
#print(type(userObj))
if Likes.objects.filter(postID = post, userID = userObj).exists():
isLiked = Likes.objects.get(postID = post, userID = userObj)
likeObj = LikeSerializer(isLiked)
#print('isLiked: ', likeObj.data['isLiked'])
return (likeObj.data['isLiked'])
return(False)
#print(isLiked)
def get_likes(self, post):
count = Likes.objects.filter(postID = post).count()
return count
def get_comments(self, post):
count = PostsComments.objects.filter(postID = post).count()
return count
class Meta:
model = Posts
fields = '__all__'
and, here is my
pagination.py,
from rest_framework import pagination
class CustomPagination(pagination.PageNumberPagination):
page_size = 2
page_size_query_param = 'page_size'
max_page_size = 3
page_query_param = 'p'
I am importing this class on views.py and it works as expected when I try to retrieve a list of users via userMVS
class userMVS(ModelViewSet):
queryset = Users.objects.all()
serializer_class = UserSerializer
pagination_class = pagination.CustomPagination

Answer 1

You must write your list function of views as -
def list(self, request, *args, **kwargs):
queryset = Posts.objects.all()
paginatedResult = self.paginate_queryset(queryset)
serializer = self.get_serializer(paginatedResult, many=True)
return Response(serializer.data)
Edits -
Suppose this is my pagination class -
class CustomPagination(PageNumberPagination):
page_size = 8
page_query_param = "pageNumber"
and used in this way at class level and mentioned above at list function -
class blogsViewSet(ModelViewSet):
queryset = Posts.objects.all()
serializer_class = PostSerializer
pagination_class = CustomPagination
then this is the url that should work
http://localhost:8000/urlofpostviewset/?pageNumber=passThePageNumber
Do read from the documents all the properties you use at CustomPagination class.