我在使用Django rest框架正确序列化嵌套ModelSerializer方面遇到了问题。嵌套的序列化器成为父JSON对象内的OrderedDict。
我已经使用了Meta.depth值,但它似乎没有任何区别。
单独创建FileTypeSerializer将导致正确形成JSON对象。
有什么建议吗?
串行器:
class FileTypeSerializer(serializers.ModelSerializer):
class Meta:
model = FileType
class FileUploadSerializer(serializers.ModelSerializer):
owner = serializers.SlugRelatedField(
read_only=True,
slug_field='id'
)
filetype = FileTypeSerializer()
class Meta:
model = FileUpload
read_only_fields = ('created', 'datafile', 'owner', 'filetype')
depth = 1
工厂:
class FileTypeFactory(factory.DjangoModelFactory):
class Meta:
model = FileType
id = fuzzy.FuzzyInteger(1, 9999)
name = fuzzy.FuzzyText(length=50)
description = fuzzy.FuzzyText(length=200)
class FileUploadFactory(factory.DjangoModelFactory):
class Meta:
model = FileUpload
id = fuzzy.FuzzyInteger(1, 9999)
filetype = factory.SubFactory(FileTypeFactory)
owner = factory.SubFactory(UserFactory)
测试:
fuf = FileUploadFactory()
serializer = FileUploadSerializer(instance=fuf, context=serializer_context)
import pdb; pdb.set_trace()
结果:
(Pdb) serializer.data
{'owner': 185, 'filetype': OrderedDict([('id', 8855), ('name', u'dFokZyReaOcwCDjAVwxGYhZNVpgOZKeaKRaMWKKHxIDZxceUWr'), ('description', u'ZNOCugfyRaWPGGmfoqZEzoBLknRBVdXyXgYwIFKBJAVuQQKppTiGVMKfgjcjCiUlzmNGFLNQiHIiCEIpydCCtfoWnqrgKOlTZXfUeYLKZgNatsxrRXyWkAEkZmfBjvFFPXcBRshcqIyHMxgHjGjCDBPLJZnEevUXIRAfBnJiLQyHblHONZllglgXhzashLqCvzmNitfN')]), 'datafile': None, 'id': 4960, 'created': '2016-04-21'}
修改
对不起,应该更具体地解决实际问题。问题是来自
的回应response = self.client.post(url, serializer.data, format='multipart')
说" filetype"是一个必填字段 - 即它没有被正确地解开或其他东西。
在 encode_multipart
中深入探讨帖子(来自django.test.Client)的代码(Pdb) lines
['--BoUnDaRyStRiNg', 'Content-Disposition: form-data; name="id"', '', '814', '--BoUnDaRyStRiNg', 'Content-Disposition: form-data; name="owner"', '', '193', '--BoUnDaRyStRiNg', 'Content-Disposition: form-data; name="filetype"', '', 'id', '--BoUnDaRyStRiNg', 'Content-Disposition: form-data; name="filetype"', '', 'name', '--BoUnDaRyStRiNg', 'Content-Disposition: form-data; name="filetype"', '', 'description', '--BoUnDaRyStRiNg', 'Content-Disposition: form-data; name="created"', '', '2016-04-21']
(Pdb) data
{'owner': 193, 'filetype': OrderedDict([('id', 1335), ('name', u'YdmXrMnxeXjzKxYhlLgaGClqTVMbTJIeMvWvQRLWUsVHWQQbFL'), ('description', u'YrmwBkwFhXGqWCNCjUIQdnBHaPQXqAhIXnOaycknMzFZPjWrWtrhYbWYBKdYDJWnRntPNjQranWjbwdBJPnKPLxAbWInfOrGZyGwDaMvlWCVMmylwxzPxCtMRkYJfuetQnvdbcheXQiRWqzFNfrKrWlcpSakmCmxFdsYBjnlxLByfulBBdiGqRdjOvkMxiUWDxasEgdT')]), 'datafile': None, 'id': 814, 'created': '2016-04-21'}
所以看起来文件类型键的值没有被编码。
答案 0 :(得分:0)
使用此
filetype = FileTypeSerializer(allow_empty_file=True,required=False)