发布带有类别的新产品时，出现以下错误（产品信息的格式如下：）
{
"product_code": "testcode",
"name": "testname",
"quantity": 22,
"price": 22,
"categories": [{
"name": "Test category",
"products": [],
"categories": []
}]
}
错误
Direct assignment to the reverse side of a many-to-many set is prohibited. Use products.set() instead.
当我使用
product.categories.set(**category)
我收到以下错误
set() got an unexpected keyword argument 'name'
我的models.py文件
from django.db import models
# Create your models here.
class Category(models.Model):
name = models.CharField(max_length=255)
categoriesId = models.ForeignKey('self', related_name='categories',on_delete=models.CASCADE, blank=True, null=True)
class Product(models.Model):
product_code = models.CharField(max_length=255)
name = models.CharField(max_length=255)
price = models.IntegerField()
quantity = models.IntegerField()
categories = models.ManyToManyField(Category, related_name='products')
我的serializers.py文件
from rest_framework import serializers
from products_and_categories.models import Product, Category
from django.db import models
class CategorySerializer(serializers.ModelSerializer):
def to_representation(self, obj):
if 'categories' not in self.fields:
self.fields['categories'] = CategorySerializer(obj, many=True)
return super(CategorySerializer, self).to_representation(obj)
class Meta:
model = Category
fields = ("name", 'products', 'categories')
class ProductSerializer(serializers.ModelSerializer):
categories = CategorySerializer(many=True)
class Meta:
model = Product
fields = ("product_code", "name", "quantity", "price", 'categories')
def create(self, validated_data):
category_data = validated_data.pop('categories')
product = Product.objects.create(**validated_data)
for category in category_data:
product.categories.create(**category)
return product
知道发生了什么吗？