django - 列表序列化器多个对象创建

Question

我的模型是:

class User(models.Model):
    id = models.AutoField(primary_key=True)
    email = models.EmailField()


class Lawyer(models.Model):    
    user = models.OnetoOneField(User)


class Session(models.Model):
    name = models.CharField()
    lawyer = models.ForeignKey(Lawyer)

我正在尝试使用 session 列表序列化器创建多个对象。
从应用程序方面来看，他们没有律师的ID，但有每个律师的电子邮件。如何编写一个列表序列化程序，在其中可以获取以下 json 输入并使用电子邮件获取律师来存储多个 session 对象？

发送的 json 输入将类似于:

[
    {
        "name": "sess1",
        "email": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="a5c9c4d2dcc0d794e5c2c8c4ccc98bc6cac8" rel="noreferrer noopener nofollow">[email protected]</a>",
    },
    {
        "name": "sess1",
        "email": "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="7814190f011d0a49381f15191114561b1715" rel="noreferrer noopener nofollow">[email protected]</a>",
    }
]

Answer 1

你可以用这种方式做到这一点，但我认为电子邮件应该是unique=True。

然后使用像这样的序列化器:

from django.utils.translation import ugettext_lazy as _

class SessionCreateManySerializer(serializers.ModelSerializer):
    email = serializers.SlugRelatedField(
        source='lawyer',
        slug_field='user__email',
        queryset=Lawyer.objects.all(),
        write_only=True,
        error_messages={"does_not_exist": _('lawyer with email={value} does not exist.')}
)

    class Meta:
        model = Session
        fields = ('name', 'email')

和通用创建 View (只需覆盖 get_serializer 并将 many=True 放入 kwargs 中):

from rest_framework.response import Response
from rest_framework import generics

class SessionCreateManyView(generics.CreateAPIView):
    serializer_class = SessionCreateManySerializer

    def get_serializer(self, *args, **kwargs):
        kwargs['many'] = True
        return super(SessionCreateManyView, self).get_serializer(*args, **kwargs)