Htykuut

I get the following error when I POST a new product with a category (the product information is formatted like this:)

{

    "product_code": "testcode",

    "name": "testname",

    "quantity": 22,

    "price": 22,

    "categories": [{

        "name": "Test category",

        "products": ,

        "categories": 

}]

}

the error

Direct assignment to the reverse side of a many-to-many set is prohibited. Use products.set() instead.

and when I use

product.categories.set(**category)

I get the following error

set() got an unexpected keyword argument 'name'

My models.py file

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')

my serializers.py file

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

Any idea what's going on ?