python - 如何显示产品的 Django 其他嵌套评论？

Question

我为我的项目创建了嵌套评论。我有我的模型和序列化器。我想当我检索产品以显示产品详细信息时，产品评论也会显示。我该怎么做？这是我的代码：

#models.py

class Comment(models.Model):
    user = models.ForeignKey(settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    product = models.ForeignKey(Product, on_delete=models.CASCADE, related_name='comments')
    parent = models.ForeignKey('self', on_delete=models.CASCADE, null=True,blank=True, related_name='replys')
    body = models.TextField()
    created = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return f'{self.user} - {self.body[:30]}'

    class Meta:
        ordering = ('-created',)

#serializers.py

class ProductSerializer(serializers.ModelSerializer):
    class Meta:
        model = Product
        fields = ['id', 'category', 'name', 'slug', 'image_1',
                  'image_2', 'image_3', 'image_4', 'image_5',
                  'description', 'price', 'available', 'created', 'updated']
        lookup_field = 'slug'
        extra_kwargs = {
            'url': {'lookup_field': 'slug'}
        }


class CommentSerializer(serializers.ModelSerializer):
    class Meta:
        model = Comment
        fields = ['id', 'user', 'product', 'parent', 'body', 'created']

#views.py

class RetrieveProductView(generics.RetrieveAPIView):
    queryset = Product.objects.all()
    serializer_class = ProductSerializer
    permission_classes = (permissions.AllowAny,)
    lookup_field = 'slug'

标签： pythondjangodjango-rest-framework

Answer 1

您还没有显示您的 ProductSerializer 但如果您按照示例进行操作，它确实应该可以工作：

class ProductSerializer(serializers.ModelSerializer):
    comments = CommentSerializer(many=True, read_only=True)

    class Meta:
        model = Product
        fields = ['name', '...', 'comments']