如何从 TastyPie 中的两个 ForeignKey 字段获取数据？

Question

我有两个模型。

class Eatery(models.Model):
    class Meta:
        db_table = 'eatery'

    date_pub = models.DateTimeField(auto_now_add=True)
    name = models.CharField(max_length=54, blank=True)
    description = models.TextField(max_length=1024)
    approve_status = models.BooleanField(default=False)
    author = models.ForeignKey(User, null=False, blank=True, default = None, related_name="Establishment author")

    class Comments(models.Model):
        class Meta:
            db_table = 'comments'

        eatery = models.ForeignKey(Eatery, null=False)
        author = models.ForeignKey(User, null=False)
        date_pub = models.DateTimeField(auto_now_add=True)
        approve_status = models.BooleanField(default=True)
        description = models.TextField(max_length=512)

我的 TastyPie 模型：

class EateryCommentsResource(ModelResource):
    user = fields.ToOneField(UserResource, 'author', full=True)

    class Meta:
        queryset = Comments.objects.all()
        resource_name = 'comments_eatery'
        filtering = {
            'author': ALL_WITH_RELATIONS
        }
        include_resource_uri = False
        #always_return_data = True
        paginator_class = Paginator

class EateryResource(ModelResource):

    user = fields.ToOneField(UserResource, 'author', full=True)
    comments = fields.ForeignKey(EateryCommentsResource, 'comments', full=True)

    class Meta:
        queryset = Eatery.objects.all()
        #excludes = ['description']
        resource_name = 'eatery'
        filtering = {
            'author': ALL_WITH_RELATIONS,
            'comments': ALL_WITH_RELATIONS,
        }
        fields = ['user', 'comments']
        allowed_methods = ['get']
        serializer = Serializer(formats=['json'])
        include_resource_uri = False
        always_return_data = True
        paginator_class = Paginator
        authorization = DjangoAuthorization()

我无法获得带有评论的 EateryResource。当我没有评论时，它起作用了。如何使用 UserResource 和 CommentsResource 获取 EateryResourse。对不起我的英语不好。谢谢。

Answer 1

由于评论通过外键链接到您的餐馆，因此您需要像这样定义 EateryResource：

class EateryResource(ModelResource):

    user = fields.ToOneField(UserResource, 'author', full=True)
    comments = fields.ToManyField(EateryCommentsResource, 'comment_set', full=True)

如何从 TastyPie 中的两个 ForeignKey 字段获取数据？

How can I get data from two ForeignKey fields in TastyPie?

python

django

tastypie