How to retrieve and map through items of a specific category with Django and react-CodePudding

I'm trying to fetch items of a particular category that then map through the category in react app. I created an API with Django restframework that returns items of such category but using a post request. Here is the code:

 
 class ProductCategoryView(APIView): 
     serializer_class = ProductSerializer 
     permission_classes = (permissions.AllowAny, ) 
  
     def post(self, request, format=None): 
         data = self.request.data 
         category = data['category'] 
         queryset = Product.objects.order_by('-dateCreated').filter(category__iexact=category) 
         serializer = ProductSerializer(queryset, many=True) 
         return Response(serializer.data)

For instance, let's say I have 3 categories of items in the database(textbooks, journals and novels). In the react frontend app, I want to retrieve only the textbooks, map through the array of textbooks and display each textbook without displaying any item from other categories. But I have challenges implementing it since I'm using post request. By passing a specific category to the body of the request I get items in that category returned. Is it possible to use get request and filter the items from the database such that I get only the items under the category called textbook?

CodePudding user response：

Yes you can implement using get as well. For searching and filtering I usually use generic ListAPIView which have nice pagination functionalities as well.

from rest_framework import generics

class ProductCategoryView(generics.ListAPIView):
    serializer_class = ProductSerializer
    permission_classes = (permissions.AllowAny, )
    queryset = Product.objects.all()
    
    def get_queryset(self):
        category = self.request.GET.get('category')
        # other_filter = self.request.GET.get('other_filter')
        qs = super().get_queryset()
        if category:
            qs = qs.filter(category__iexact=category)
        # if other_filter:
        #    qs = qs.filter(other_field=other_field)
        return qs

and your url would look like this

/product-list/?category=textbooks

/product-list/?category=textbooks&other_filter=other

If you still want to stick with your code above you can change to get as follow

def get(self, request, format=None):
    category = request.GET.get('category')
    qs = Product.objects.all()
    if category:
        qs = qs.filter(category__iexact=category)
    serializer = self.serializer_class(qs, many=True)
    return Response(serializer.data)