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[英]Django REST Framework (AttributeError : Got AttributeError when attempting to get a value for field " " on serializer " ")
[英]Serializers - Django REST framework (AttributeError: Got AttributeError when attempting to get a value for field `user` on serializer)
AttributeError:在嘗試獲取序列化程序UserKeywordSerializer
上的字段user
的值時出現UserKeywordSerializer
。 序列化器字段可能命名不正確,並且與QuerySet
實例上的任何屬性或鍵都不匹配。
模型.py
class Keyword(models.Model):
name=models.CharField(max_length=500,unique=True)
image = models.ImageField(upload_to='keywords/', blank=True, null=True)
mood=models.ManyToManyField(Mood,blank=True)
def __str__(self):
return str(self.name)
class UserKeyword(models.Model):
keywords=models.ManyToManyField(Keyword)
count=models.IntegerField(blank=True,null=True,default=0)
user=models.ForeignKey(User,on_delete=models.CASCADE)
def __str__(self):
return str(self.id)
序列化程序.py
class KeywordsSerializer(serializers.ModelSerializer):
class Meta:
model = Keyword
fields ='__all__'
class UserKeywordSerializer(serializers.ModelSerializer):
keywords = KeywordsSerializer( read_only=True,many=True)
class Meta:
model = UserKeyword
fields = '__all__'
視圖.py
top_keywords=UserKeyword.objects.filter(user_id=request.user.id).select_related().order_by('-count')
user_serializer=UserKeywordSerializer(top_keywords).data
print(user_serializer)
top_keywords=UserKeyword.objects.filter(user_id=request.user.id).select_related().order_by('-count')
user_serializer=UserKeywordSerializer(top_keywords, many=True).data
top_keywords
是查詢集,因此您應該將many=True
添加到序列化程序,請參閱處理多個對象。
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