id字段在django休息框架序列化程序 [英] id field in django rest framework serializer

问题描述

我正在使用django休息框架，只需创建一个简单的序列化程序，如下所示：

I'm using django rest framework and just creating a simple serializer like this:

class PackageSerializer(serializers.HyperlinkedModelSerializer):

    class Meta:
        model = Package
        fields = ('id','url', 'title','location')

但是我收到这个错误

KeyError at /cerberus/packages/
'id'

主键id作为我的序列化数据的一部分？感谢您的帮助！

How come I can't get the primary key 'id' as part of my serialized data? Thanks for helping!

推荐答案

HyperlinkedModelSerializer 不包含 id 。在2.2及更早版本中，您需要将其明确添加为字段...

HyperlinkedModelSerializer doesn't include the id by default. In 2.2 and earlier you'll need to add it explicitly as a field...

class PackageSerializer(serializers.HyperlinkedModelSerializer):
    id = serializers.Field()

    class Meta:
        model = Package
        fields = ('id','url', 'title','location')

从2.3起，你可以简单地添加'id'到字段选项...

From 2.3 onwards, you can simply add 'id' to the fields option...

class PackageSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = Package
        fields = ('id','url', 'title','location')

从3.x起，您必须使用 ReadOnlyField（）而不是 Field（）如果你想添加它明确地不使用字段选项...

From 3.x onwards, you must use ReadOnlyField() instead of Field() if you want to add it explicitly and not use the fields option...

class PackageSerializer(serializers.HyperlinkedModelSerializer):
    id = serializers.ReadOnlyField()

    class Meta:
        model = Package

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