created endpoint to get all categories

products/views.py

@@ -332,3 +332,13 @@ def purchase_email(request):
 
     # response
     return Response()
+
+
+@api_view(['GET'])
+@permission_classes([AllowAny,])
+def all_categories(request):
+    all_categories = []
+    for instance in CategoryTag.objects.all():
+        all_categories.append(instance.label)
+    return Response(data=all_categories)
+