<filename>rest_project/main/serializers.py
from django.contrib.auth.models import User, Group
from .models import Product
from rest_framework import serializers

class UserSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = User
        fields = ['url', 'username', 'email', 'groups']

class GroupSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Group
        fields = ['url', 'name']

class ProductSerializer(serializers.ModelSerializer):
    class Meta:
        model = Product
        fields = [
            'id', 
            'title',  
            'rating', 
            'review_num', 
            'price', 
            'owner', 
            'user', 
            'amazon_link',
            'url',
            ]