python - 序列化器 - Django REST 框架(AttributeError : Got AttributeError when attempting to get a value for field `user` on serializer)

Question

AttributeError:尝试在序列化器 UserKeywordSerializer 上获取字段 user 的值时出现 AttributeError。序列化程序字段可能命名不正确，并且与 QuerySet 实例上的任何属性或键不匹配。

models.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)

序列化器.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__'

views.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)

Answer 1

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 是查询集，因此您应该将 many=True 添加到序列化器，请参阅 Dealing with multiple objects .