HyperlinkedIdentityField仅在用户模型上返回错误 [英] HyperlinkedIdentityField returning error only on User model

问题描述

我已经在许多序列化器上使用了 HyperlinkedIdentityField ，但是当我尝试在默认的Django User model我收到一个错误。

I have been using the HyperlinkedIdentityField on many of my serializers, however, when I try to use it on the default Django User model I get an error.

class UserSerializer(serializers.ModelSerializer):
    userprofile = serializers.HyperlinkedRelatedField(
        many=False, view_name='user-profile-detail', read_only=True)
    uri = serializers.HyperlinkedIdentityField(
        view_name='user-detail')

    class Meta:
        model = User
        fields = ('id', 'username', 'password', 'first_name', 'last_name',
                  'email', 'is_active', 'is_staff', 'is_superuser',
                  'last_login', 'date_joined', 'userprofile', 'uri',)
        read_only_fields = ('id', 'last_login', 'date_joined',)
        extra_kwargs = {'password': {'write_only': True}}

我得到的错误是：

Exception Type: ImproperlyConfigured
Exception Value: Could not resolve URL for hyperlinked relationship using view name
                 "user-detail". You may have failed to include the related model in
                 your API, or incorrectly configured the `lookup_field` attribute
                 on this field.

user-detail 名称绝对存在并在引用用户的其他表上正常工作。 lookup_field 参数默认使用 pk 。 userprofile 是默认用户模型的OneToOne。

The user-detail name definitely does exist and works correctly on other tables that reference the user. The lookup_field argument is defaulted to using the pk. The userprofile is a OneToOne to the default User model.

我想知道它是否与Django的 AnonymousUser 具有 pk -1 ，但我无法验证这一点。

I was wondering if it had something to do with Django's default AnonymousUser having a pk of -1, but I haven't been able to verify this.

任何帮助将非常感谢。谢谢

Any help would greatly be appreciated. Thanks

推荐答案

好的，几秒钟后，我发布了这个问题，几周的努力，我意识到问题是什么。我认为它与 AnonymousUser 有 pk 有关 - 1 。我的原始网址格式是：

OK, seconds after I posted the question and weeks of struggling with this I realized what the problem was. I was right to think it had something to do with the AnonymousUser having a pk of -1. My original URL pattern was:

url(r'user/(?P<pk>\d+)/$', 'user_detail', name='user-detail'),

但将其更改为：

url(r'user/(?P<pk>[-\d]+)/$', 'user_detail', name='user-detail'),

修复了问题。我不允许 pk 字段中的连字符（ - ）。简单，但是起初我不是很明显。错误消息也没有任何帮助，这就是为什么我很可能没有立即看到问题。

fixed the problem. I wasn't allowing the hyphen (-) in the pk field. Simple, but it wasn't very obvious to me at first. The error message was not at all helpful either, which is why I most likely didn't see the problem right away.

我希望这有助于别人，如果他们有同样的问题。

Well I hope this helps others if they are having the same issue.

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