我的 Django 项目中有 2 个模型:
class Item(models.Model):
title = models.CharField(max_length=64)
description = models.CharField(max_length=1024)
price = models.PositiveIntegerField()
class Review(models.Model):
grade = models.PositiveSmallIntegerField()
text = models.CharField(max_length=1024)
item = models.ForeignKey('Item', on_delete=models.CASCADE, related_name='reviews')
我希望能够反序列化带有嵌套 Item
的 reviews
模型(这是一个评论查询集)
我用以下方式描述了棉花糖模式:
class ReviewSchemaID(Schema):
id = fields.Int()
grade = fields.Int()
text = fields.Str()
class ItemReviewsSchema(Schema):
id = fields.Int()
title = fields.Str()
description = fields.Str()
price = fields.Int()
reviews = fields.List(fields.Nested(ReviewSchemaID()))
但是当尝试将 django 对象反序列化为 JSON 时:
item = get_object_or_404(Item, id=item_id)
item_data = ItemReviewsSchema().dump(item)
我收到以下错误:
TypeError: __call__() missing 1 required keyword-only argument: 'manager'
如何修复错误?