add order filters with status and products pagination

api_doc.txt

@@ -45,6 +45,13 @@ Inventory Products Endpoints:
    - Request Body: nil
    - Response: nil
 
+Note: This search functionality works when postgres database is used
+5. GET /api/inventory/products/search?q=
+   - Description: Search for products by the specified field
+   - Request Body: nil
+   - Response: list of products
+   - Search From: title, description
+
 
 Inventory Orders Endpoints:
 
@@ -66,6 +73,7 @@ Inventory Orders Endpoints:
    - Description: List orders
    - Request Body: nil
    - Response: list of orders
+   - Filters: status, date_from, date_to
 
 3. PUT /api/inventory/orders/:id/status/
    - Description: Update order status by an admin user

drugstoc_inventory/settings.py

@@ -34,6 +34,7 @@
     'rest_framework',
     'rest_framework_simplejwt',
     'rest_framework_simplejwt.token_blacklist',
+    'django_filters',
     #internal apps
     "users",
     "inventory"

inventory/views.py

@@ -1,11 +1,14 @@
 # views.py
 import logging
 from django.contrib.postgres.search import SearchQuery, SearchRank
+from django_filters import rest_framework as filters
+
 from rest_framework import status, permissions
 from rest_framework.response import Response
 from rest_framework.views import APIView
 from django.shortcuts import get_object_or_404
 from django.http import Http404
+from rest_framework.pagination import PageNumberPagination
 from django.db.models import Sum, F
 from datetime import datetime, timedelta
 from .models import Product, Order, OrderItem
@@ -24,8 +27,13 @@ class InventoryProductList(APIView):
     def get(self, request):
         logger.info(f"User {request.user.id} requested product list")
         products = Product.objects.all()
-        serializer = ProductSerializer(products, many=True)
-        return Response(serializer.data)
+
+        # Apply pagination
+        paginator = PageNumberPagination()
+        paginated_products = paginator.paginate_queryset(products, request)
+
+        serializer = ProductSerializer(paginated_products, many=True)
+        return paginator.get_paginated_response(serializer.data)
 
 class InventoryProductCreate(APIView):
     permission_classes = [permissions.IsAuthenticated, IsAdminOrReadOnly]
@@ -73,13 +81,30 @@ def delete(self, request, pk):
         return Response(status=status.HTTP_204_NO_CONTENT)
 
 
+class OrderFilter(filters.FilterSet):
+    status = filters.CharFilter(field_name='status', lookup_expr='iexact')
+    date_from = filters.DateFilter(field_name='created_at', lookup_expr='gte')
+    date_to = filters.DateFilter(field_name='created_at', lookup_expr='lte')
+
+    class Meta:
+        model = Order
+        fields = ['status', 'created_at']
+
+
+
 class OrderListCreate(APIView):
     permission_classes = [permissions.IsAuthenticated]
     authentication_classes = [CustomJWTAuthentication]
 
     def get(self, request):
         logger.info(f"User {request.user.id} requested their order list")
         orders = Order.objects.filter(owner=request.user)
+
+        filterset = OrderFilter(request.GET, queryset=orders)
+        if not filterset.is_valid():
+            return Response(filterset.errors, status=status.HTTP_400_BAD_REQUEST)
+
+        orders = filterset.qs
         serializer = OrderSerializer(orders, many=True)
         return Response(serializer.data)
 

requirements.txt

@@ -5,6 +5,8 @@ Pillow==10.3.0
 pytest-django==4.8.0
 django-redis==5.4.0
 
+django_filter==24.2
+
 whitenoise  # https://github.com/evansd/whitenoise
 redis  # https://github.com/redis/redis-py
 hiredis  # https://github.com/redis/hiredis-py