Add pagination and search filters

Author: p8ul

Dockerfile

@@ -1,14 +1,11 @@
 FROM python:3.5
 
+RUN mkdir /app
 WORKDIR /app
 
-COPY . /app
+ADD . /app
 
 RUN pip install -r requirements.txt
 
 EXPOSE 8096
 EXPOSE 80
-
-CMD ["python", "manage.py", "makemigrations"]
-CMD ["python", "manage.py", "migrate"]
-CMD ["python", "manage.py", "runserver"]

app_dir/user/api/pagination.py

@@ -0,0 +1,19 @@
+from rest_framework.response import Response
+from rest_framework.pagination import (
+    LimitOffsetPagination,
+    PageNumberPagination,
+)
+
+
+class PostLimitOffsetPagination(PageNumberPagination, LimitOffsetPagination):
+
+    def get_paginated_response(self, data):
+        return Response({
+            'links': {
+                'next': self.get_next_link(),
+                'previous': self.get_previous_link()
+            },
+            'count': self.page.paginator.count,
+            'total_pages': self.page.paginator.num_pages,
+            'results': data
+        })

app_dir/user/api/views.py

@@ -2,14 +2,34 @@
     ListAPIView, CreateAPIView, RetrieveUpdateAPIView,
     RetrieveAPIView, DestroyAPIView
 )
+from django.db.models import Q
+from rest_framework import pagination
 from rest_framework.permissions import (IsAuthenticatedOrReadOnly, IsAuthenticated)
 from .serializers import UserSerializer, User
+from .pagination import PostLimitOffsetPagination
 
 
 class UserListAPIView(ListAPIView):
     permission_classes = [IsAuthenticatedOrReadOnly]
-    queryset = User.objects.all()
     serializer_class = UserSerializer
+    pagination_class = PostLimitOffsetPagination
+
+    def get_queryset(self, *args, **kwargs):
+        queryset_list = User.objects.all()
+
+        page_size = 'page_size'
+        if self.request.GET.get(page_size):
+            pagination.PageNumberPagination.page_size = self.request.GET.get(page_size)
+        else:
+            pagination.PageNumberPagination.page_size = 10
+        query = self.request.GET.get('q')
+        if query:
+            queryset_list = queryset_list.filter(
+                Q(email__icontains=query) |
+                Q(username__icontains=query)
+            )
+
+        return queryset_list.order_by('-id')
 
 
 class UserCreateAPIView(CreateAPIView):

configurations/urls.py

@@ -7,6 +7,6 @@
     path('api-auth/', include('rest_framework.urls', namespace='rest')),
     path('api-token-auth', obtain_jwt_token),
     path('user/', include(('app_dir.user.urls', 'user'), namespace='user')),
-    path('user/api/', include(('app_dir.user.api.urls', 'user_api'), namespace='user_api'))
+    path('api/user/', include(('app_dir.user.api.urls', 'user_api'), namespace='user_api'))
 ]
 

docker-compose.yml

@@ -1,15 +1,18 @@
 version: '3'
 services:
+  db:
+    image: postgres
   web:
     build: .
-    ports:
-    - "5000:5000"
     volumes:
-    - .:/code
-    - logvolume01:/var/log
+    - .:/app
     links:
     - redis
     command: python manage.py runserver 0.0.0.0:5000
+    ports:
+    - "5000:5000"
+    depends_on:
+      - db
   redis:
     image: redis
 volumes: