尝试在序列化程序中使用 ChoiceField
时遇到 TypeError
。
from rest_framework import serializers
from rest_framework.fields import ChoiceField
from comp_track_sys.models import Campaign
from contacts.models import CList
class EditCampaignSerializer(serializers.ModelSerializer):
class Meta:
model = Campaign
...
def __init__(self, *args, **kwargs):
super(EditCampaignSerializer, self).__init__(*args, **kwargs)
user = self.context['request'].user
clists = CList.objects.filter(company=user.profile.company)
self.fields['clist'] = ChoiceField(choices=clists)
我尝试过ChoiceField(choices=json.dumps(clists))
,但仍然收到错误。
TypeError: <CList: Testing> is not JSON serializable
这些是我的模型,以防需要解决问题。
# Campaign Model
class Campaign(models.Model):
campaign_id = UUIDField(auto=True)
name = models.CharField("Campaign Name", max_length=50)
company = models.ForeignKey(Company)
clist = models.ForeignKey(CList, verbose_name="Contact List", blank=True, null=True)
user = models.ForeignKey(User, blank=True, null=True)
# CList Model
class CList(models.Model):
name = models.CharField("Contact List", max_length=255)
description = models.TextField(blank=True, null=True)
contacts = models.ManyToManyField(Contact, related_name='con_clists')
company = models.ForeignKey(Company)
updated = models.DateTimeField(auto_now=True)
created = models.DateTimeField(auto_now_add=True)
uuid = models.CharField("ShortUUID", max_length=50, blank=True, null=True)
这是 View
class EditCampaignViewSet(ModelViewSet):
queryset = Campaign.objects.all()
serializer_class = EditCampaignSerializer
parser_classes = (MultiPartParser, FormParser)
def list(self, request, type=None, *args, **kwargs):
company = request.user.company
queryset = Campaign.objects.filter(company=company,
campaign_type=type)\
.order_by('-created')\
.prefetch_related('user__profile')
serializer = EditCampaignSerializer(queryset, many=True, context={'request': self.request})
return Response(serializer.data)
最佳答案
我认为您应该使用 PrimaryKeyRelatedField
而不是 ChoiceField
,并在序列化器字段上定义自定义 get_queryset
方法来过滤相关QuerySet
。
from rest_framework import serializers
from rest_framework.fields import ChoiceField
from comp_track_sys.models import Campaign
from contacts.models import CList
class CListPrimaryKeyRelatedField(serializers.PrimaryKeyRelatedField):
def get_queryset(self):
return self.queryset.filter(
company=self.root.context['request'].user.profile.company
)
class EditCampaignSerializer(serializers.ModelSerializer):
clist = CListPrimaryKeyRelatedField(
queryset=CList.objects.all(),
)
class Meta:
model = Campaign
fields = (
'clist',
)
关于python - 使用 ChoiceField 时出现 Django Rest API TypeError,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/45317114/