Merge pull request #831 from AI4Bharat/pagination_cl_ui

added pagination

backend/tasks/views.py

@@ -146,7 +146,28 @@ def annotations(self, request, pk):
                 )
                 # ann.result = {"subtitles": subtitles, "standardised_transcription": standardised_transcription}
                 ann.result = subtitles
-
+            try:
+                page_number = int(request.query_params["page_number"])
+            except KeyError:
+                page_number = 1
+            try:
+                number_of_records = int(request.query_params["records"])
+                if number_of_records <= 0:
+                    number_of_records = 10
+            except KeyError:
+                number_of_records = 10
+            serializer = AnnotationSerializer(annotations, many=True)
+            for i in range(len(annotations)):
+                paginator = Paginator(serializer.data[i]["result"], number_of_records)
+                if page_number > paginator.num_pages or page_number < 1:
+                    page = []
+                else:
+                    page = paginator.get_page(page_number)
+                serializer.data[i]["result"] = [item for item in page]
+                serializer.data[i]["total_records"] = paginator.count
+                serializer.data[i]["total_pages"] = paginator.num_pages
+                serializer.data[i]["page_number"] = page_number
+            return Response(serializer.data)
         serializer = AnnotationSerializer(annotations, many=True)
         return Response(serializer.data)