filtering product searches with empty string working now

products/views.py

@@ -9,6 +9,7 @@ from django.core.validators import validate_email
 from django.contrib.auth import get_user_model
 from django.template.loader import render_to_string
 from django.core.mail import EmailMessage
+from django.db.models import Max, Min
 
 # Create your views here.
 from rest_framework import status
@@ -168,9 +169,6 @@ def product_search(request):
     price_max = request.GET.get('price_max', None)
     order = request.GET.get('order', '')
 
-    if q is None:
-        return Response({"errors": {"details": "No query string to parse"}})
-
     try:
         # we collect our results here
         result_set = set()
@@ -180,13 +178,48 @@ def product_search(request):
             'max': None,
         }
 
-        if q == '':
+        if not q:
             # filter entire queryset
             products_qs = Product.objects.filter(active=True)
-            if tags:
-                products_qs = Product.objects.filter(tags=tags)
-            if categories:
-                products_qs = Product.objects.filter(category__name__in=categories)
+            # filter by category
+            if categories is not None:
+                products_qs = products_qs.filter(category__name__in=categories)
+
+            # filter by tags
+            if tags is not None:
+                products_qs = products_qs.filter(tags__name__icontains=tags)
+
+            # filter by shipping cost
+            if shipping_cost is True:
+                # only instances with shipping costs
+                products_qs = products_qs.filter(
+                    Q(shipping_cost__isnull=False)&
+                    Q(shipping_cost__gte=1)
+                )
+            elif shipping_cost is False:
+                # only intances without shpping costs
+                products_qs = products_qs.filter(Q(shipping_cost=None)|Q(shipping_cost=0.00))
+
+            # filter by discount
+            if discount is True:
+                # only instances with shipping costs
+                products_qs = products_qs.filter(
+                    Q(discount__isnull=False)&
+                    Q(discount__gte=1)
+                )
+            elif discount is False:
+                # only intances without shpping costs
+                products_qs = products_qs.filter(Q(discount=None)|Q(discount=0.00))
+
+            # filter by price
+            if price_min is not None:
+                products_qs = products_qs.filter(price__gte=price_min)
+            if price_max is not None:
+                products_qs = products_qs.filter(price__lte=price_max)
+
+            # get  min_price and max_price
+            prices['min'] = products_qs.aggregate(Min('price'))
+            prices['max'] = products_qs.aggregate(Max('price'))
             # serialize and list data
             serializer = ProductSerializer(products_qs, many=True)
             result_list = [dict(i) for i in serializer.data]
@@ -216,7 +249,7 @@ def product_search(request):
         elif order == 'oldest':
             # order results by created
             result_list = sorted(result_list, key= lambda x:x['created'], reverse=False)
-        elif q != '':
+        elif q:
             # order results by RANK
             result_list = sorted(result_list, key= lambda x:x['rank'], reverse=True)