Question

我需要user-detail的URL端点为api/email/user@gmail.com； api/email/user2@gmail.com，但无效

如果我将url字段添加到序列化程序类中，则在user-list页面上，我有例外：Could not resolve URL for hyperlinked relationship using view name "user-email". You may have failed to include the related model in your API, or incorrectly configured the lookup_field attribute on this field.

那是我的代码： serializers.py

class EmailSerializer(serializers.ModelSerializer):
    """
    Профиль пользователя
    """
    class Meta:
        model = User
        fields = ('url', 'email', )  
        read_only_fields = ('email', )
        extra_kwargs = {
            'url': {'view_name': 'user-email', 'lookup_field': 'email'}
        }

views.py

class RetrieveModelViewSet(mixins.RetrieveModelMixin,
                            mixins.ListModelMixin,
                            viewsets.GenericViewSet):
    """
    действия просмотр
    """
    pass

class EmailViewSet(RetrieveModelViewSet):
    queryset = User.objects.all()
    serializer_class = EmailSerializer
    lookup_field = 'email'

urls.py

router.register(r'email', views.EmailViewSet, 'email')

我也尝试通过quote_plus清除电子邮件字段： serializers.py

from urllib.parse import quote_plus
class EmailSerializer(serializers.ModelSerializer):
    """
    Профиль пользователя
    """
    email = quote_plus(serializers.EmailField(read_only=True))
    class Meta:
        model = User
        fields = ('url', 'email', )  
        read_only_fields = ('email', )
        extra_kwargs = {
            'url': {'view_name': 'user-email', 'lookup_field': 'email'}
        }

但是我有错误： TypeError: quote_from_bytes() expected bytes

Answer 1

默认为“。”在查找正则表达式（django-rest-framework.org/api-guide/routers）中是不允许的，您应该更改“ lookup_value_regex”字段以允许标点（“。”）字符。默认值为“ [^ /。] +”，因此您需要从“ [^ /] +”中删除标点符号（“。”）。

Answer 2

同样的问题，我按如下方法处理。

我将使用电子邮件字段进行查找，但是不可能在URL端点中使用它。

由于我API中的json包含良好的URL端点以及相关的电子邮件，因此我查询json以获取URL端点。一种手动关系：

import requests, json, subprocess

REQUEST_URL = 'http://127.0.0.1:8000/users/?format=json'
login = 'DjangoLogin'
password = 'DjangoPassWord'
response = requests.get(REQUEST_URL, auth=(login, password))

json_data = response.text.encode('utf-8', 'ignore')
readable_json = json.loads(json_data)

email_reference = YOUR_EMAIL_FIELD
new_firstname = YOUR_FIRSTNAME_FIELD
new_lastname = YOUR_LASTNAME_FIELD

match_count = 0

for results in readable_json['results']:
    match_count += 1
    if results['email'] == email_reference and results['email'] is not None and match_count != 1:
        my_url = results['url']

        my_cmd = 'http -a ' + login + ':' + password + ' PUT ' + my_url + ' firstname="' + new_firstname + '"' + ' lastname="' + new_lastname + '"'

        p = subprocess.Popen(my_cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        out, err = p.communicate()

我的网站上有更多说明：https://hg-map.fr/astuces/69-django-rest-api

如何在DRF中将“电子邮件”字段设置为lookup_field？

2 个答案: