Django序列化错误

Question

我正在尝试像这样序列化我的 django 模型：

>>> from studentapp.models import StudentAcademicPrograms
>>> from studentapp.models import AcademicPrograms, AcademicProgramsManager
>>> from django.core import serializers
>>> json_serializer = serializers.get_serializer("json")
>>> data = json_serializer.serialize(StudentAcademicPrograms.objects.all())

但我收到此错误：

Traceback (most recent call last):
  File "<console>", line 1, in <module>
TypeError: unbound method serialize() must be called with Serializer instance as first argument (got QuerySet instance instead)

Answer 1

你可以这样做：

from django.core.serializers import serialize
serialize('json', StudentAcademicPrograms.objects.all())    

您的具体问题是您尝试在 Serializer 类上调用 serialize()，而不是实例。

JSONSerializer = serializers.get_serializer("json")
json_serializer = JSONSerializer()
json_serializer.serialize(StudentAcademicPrograms.objects.all())
data = json_serializer.getvalue()

还可以查看 django 文档中的 this example。

Answer 2

你必须实例化json_serializer

>>> data = json_serializer().serialize(StudentAcademicPrograms.objects.all())

在 json_serializer 之后通知 ()。