我在使用序列化器在另一个序列化器(外键关系)中使用模型序列化器时,序列化器无法从子模型返回字段时遇到问题。我不是在寻找解决方案,而是为什么它不起作用。
models.py
class LinkedinAccount(models.Model):
id = models.AutoField(primary_key=True)
name = models.CharField(max_length=100, blank=True)
date_created = models.DateTimeField(auto_now_add=True)
is_prospect = models.BooleanField(default=False)
class LinkedinProspectAccount(LinkedinAccount):
title = models.CharField(max_length=255, blank=True)
company = models.CharField(max_length=100, blank=True)
country = models.CharField(max_length=255, blank=True)
city = models.CharField(max_length=255, blank=True)
serializers.py
class LinkedinAccountSerializer(serializers.ModelSerializer):
class Meta:
model = user_account.models.LinkedinAccount
fields = ('id', 'name')
read_only_fields = ('date_created',)
class LinkedinProspectAccountSerializer(serializers.ModelSerializer):
class Meta:
model = user_account.models.LinkedinProspectAccount
fields = ('title', 'company', 'country', 'city')
read_only_fields = ('date_created',)
class ConversationSerializer(serializers.ModelSerializer):
linkedin_account = user_account.serializers.LinkedinAccountSerializer()
last_message = MessageSerializer()
prospect = user_account.serializers.LinkedinProspectAccountSerializer()
class Meta:
model = conversation.models.Conversation
fields = ('id', 'linkedin_account', 'prospect', 'conversation_id', 'archived',
'last_message')
lookup_field = None
read_only_fields = ('created_at', 'updated_at',)
我从使用generics.ListCreateAPIView的普通GET请求获得的信息是:
[OrderedDict([('id',1),('linkedin_account',OrderedDict([('id',1), ('name','Test LinkedIn account')])),('prospect',OrderedDict()), ('conversation_id','100'),('archived',False),('last_message', 无)])]
潜在客户对象没有字段,如果我在序列化器中添加基本模型字段,则返回它们,但仍然没有子模型字段。单独使用LinkedinProspectAccountSerializer时,它可以正常工作。目前,我正在使用它作为解决方法:
def get_prospect(self, obj):
prospect = user_account.models.LinkedinProspectAccount.objects.get(id=obj.prospect.id)
serializer = user_account.serializers.LinkedinProspectAccountSerializer(prospect)
return serializer.data