Django one parent and two children relationship - django

Question

I am new in Django and Django-Rest-framework. I am following one Youtube Tutorial. He used static Django Template but I want to use React as my frontend. So I have create multiple api endpoints. In this particular Youtube episode I am stuck to display what kind of products specific customer bought. Short summary of my project is: I have four models: order, customer, product and tags(Product and tags have many to many relationships). In the order model I have two foreign key one is product and another one is customer. This is my order models [Looks like]. I don't know how to query and display what kind of products specific customer(by using id) bought.
This is my models
from __future__ import unicode_literals
from django.db import models
class Tag(models.Model):
name= models.CharField(max_length=200, null=True)
def __str__(self):
return self.name
class Product(models.Model):
CATEGORY=(
('Indoor', 'Indoor'),
('Outdoor', 'Outdoor'),
)
name= models.CharField(max_length=200, null=True)
price= models.FloatField(null=True)
category=models.CharField(max_length=200,null=True, choices=CATEGORY)
description= models.CharField(max_length=200,null=True, blank= True)
date_created=models.DateTimeField(auto_now_add=True, null=True)
tags= models.ManyToManyField(Tag)
def __str__(self):
return self.name
class Customer(models.Model):
name = models.CharField(max_length=200, null= True)
email = models.CharField(max_length=20, null=True)
phone = models.CharField(max_length=20, null=True)
date_created= models.DateTimeField(auto_now_add=True)
def __str__(self):
return self.name
class Order(models.Model):
STATUS =(
('Pending', 'Pending'),
('Out of delivery', 'Out of delivery'),
('Delivered', 'Delivered'),
)
status= models.CharField(max_length=200, null=True,choices= STATUS)
date_created=models.DateTimeField(auto_now_add=True, null=True)
customer= models.ForeignKey(Customer, null= True, on_delete= models.SET_NULL)
product= models.ForeignKey(Product, null= True, on_delete= models.SET_NULL)
This is serializes
from rest_framework import serializers
from .models import *
class TagSerializer(serializers.ModelSerializer):
class Meta:
model = Tag
fields = ["name"]
class ProductSerializer(serializers.ModelSerializer):
tags = TagSerializer(many=True)
class Meta:
model = Product
fields = '__all__'
class CustomerSerializer(serializers.ModelSerializer):
products: ProductSerializer(many=True)
class Meta:
model = Customer
fields = '__all__'
class OrderSerializer(serializers.ModelSerializer):
customer = CustomerSerializer()
product = ProductSerializer()
class Meta:
model = Order
fields = '__all__'
class CustomerSerializer(serializers.ModelSerializer):
products: ProductSerializer(many=True)
orders: OrderSerializer(many=True)
class Meta:
model = Customer
fields = '__all__'