如何在Django Rest Framework上显示ManytoMany模型关系变量的值

我是django的新手，在挣扎中，我在google上浏览过，但是找不到任何可以帮助的东西。

这是我的模型：

from django.db import models
# from django.contrib.auth.models import


class Order(models.Model):

    table_id = models.IntegerField(unique=True)
    meal = models.ManyToManyField('meals')

    # Meal = models.ForeignKey('Meals',on_delete=models.CASCADE)
    @property
    def total_price(self):
        price = self.meal.objects.all().aggregate(total_price=models.Sum('meals__price'))
        return price['total_price']

class Meals(models.Model):
    name = models.CharField(max_length=100)
    price = models.DecimalField(decimal_places=2, max_digits=5)

这是我的serializer.py：

from rest_framework import serializers


from cafe_app import models
class MealSerializer(serializers.ModelSerializer):

    class Meta:
        model = models.Meals
        fields = ['id','name','price',]

class OrderSerializer(serializers.ModelSerializer):

    \*meal = MealSerializer(read_only=True,many=True)\*
    class Meta:
        model = models.Order
        fields = ['table_id','meal',]

当我注释顿饭= MealSerializer（read_only = True，many = True）行时，它将输入显示为table_id和顿饭，其中顿饭值分别为顿饭对象（1），均值对象（2）...。

我的问题：

1. How to display meal Object value instead of it as object.
2. How Can I use total_price method in my view/serializer.
3. How to see the flow like how it flows from which class to which class call goes and what is type and value of structure that I received.

谢谢。

问题来源：stackoverflow