Django Model序列化器返回ID

如何解决Django Model序列化器返回ID

我已经如下创建模型和序列化器

serializers.py

class ProductCategorySerializer(ModelSerializer):
    class Meta:
        model = ProductCategory
        fields = ['id','name']

    @staticmethod
    def get_product_category_name(obj):
        return obj.product_categories.name


class ProductSerializer(ModelSerializer):
    product_categories = ProductCategorySerializer

    class Meta:
        model = Product
        fields = ['id','name','default_price','description','product_categories']

models.py

class ProductCategory(models.Model):
    class Meta:
        db_table = 'itw_product_category'
        verbose_name = 'product category'
        verbose_name_plural = 'product categories'

    name = models.CharField(max_length=50)

    def __str__(self):
        return self.name


class Product(models.Model):
    class Meta:
        db_table = 'itw_product'
        verbose_name = 'product'
        verbose_name_plural = 'products'

    name = models.CharField(max_length=50)
    default_price = models.FloatField(max_length=10)
    description = models.TextField(max_length=50)
    deleted = models.BooleanField(default=False)

    product_categories = models.ManyToManyField(ProductCategory,verbose_name='product_categories',related_name='products')

现在，当我尝试创建新模型时，product_categories仅返回ID，而不返回名称，我应该更改什么？

示例：

{
    "id": 25,"name": "kms","default_price": 932.0,"description": "kms","product_categories": [
        5
    ]
}

解决方法

您可以使用此方法在许多字段字段中显示字符串值。

但是，由于可以在要更新时使用其数字值对其进行更新，因此您将需要使用一种方法或单独的序列化程序并通过视图进行更新，删除和创建数据以查看数据。

class ProductCategory(models.Model):
    product_categories = StringRelatedField(many=True)

    class Meta:
        db_table = 'itw_product_category'
        verbose_name = 'product category'
        verbose_name_plural = 'product categories'

    name = models.CharField(max_length=50)

    def __str__(self):
        return self.name

,

希望这可以为您提供帮助。另外，请阅读nested relationship。

class ProductSerializer(ModelSerializer):
    product_categories = ProductCategorySerializer(many=True)