django - 用Tastypie创建相关资源

Question

我想由于我发布到UserResource而创建了一个UserProfileResource。

models.py:

class UserProfile(models.Model):
    home_address = models.TextField()
    user = models.ForeignKey(User, unique=True)

resources.py

class UserProfileResource(ModelResource):
    home_address = fields.CharField(attribute='home_address')

    class Meta:
        queryset = UserProfile.objects.all()
        resource_name = 'profile'
        excludes = ['id']
        include_resource_uri = False


class UserResource(ModelResource):
    profile = fields.ToOneField(UserProfileResource, 'profile', full=True)
    class Meta:
        queryset = User.objects.all()
        resource_name = 'user'
        allowed_methods = ['get', 'post', 'delete', 'put']
        fields = ['username']
        filtering = {
                'username': ALL,
                }

curl命令:

curl -v -H "Content-Type: application/json" -X POST --data '{"username":"me", "password":"blahblah", "profile":{"home_address":"somewhere"}}' http://127.0.0.1:8000/api/user/

但我得到:

 Django Version:   1.4
 Exception Type:   IntegrityError
 Exception Value:
 null value in column "user_id" violates not-null constraint

好像是鸡和鸡蛋的场景。我需要user_id来创建UserProfileResource，并且我需要配置文件来创建UserResource。显然我做的事很愚蠢。

外面有人可以发光吗？
非常感谢
约诺克

我按照Pablo的建议修改了我的代码。

class UserProfileResource(StssRessource):
    home_address = fields.CharField(attribute='home_address')
    user = fields.ToOneField('resources.UserResource', attribute='user', related_name='profile')

    class Meta:
        queryset = UserProfile.objects.all()
        resource_name = 'profile'


class UserResource(ModelResource):
    profile = fields.ToOneField('resources.UserProfileResource', attribute='profile', related_name = 'user', full=True)
    class Meta:
        queryset = User.objects.all()
        resource_name = 'user'

但是越来越:

 Django Version:   1.4
 Exception Type:   DoesNotExist

这与尝试访问ORM中的用户资源有关，该资源在创建related_objects UserProfileResource时不存在。哪个是对的。在创建related_object之后，才创建用户ORM。

其他人看到了吗？

Answer 1

两天后，我终于设法节省了相关资源，问题是您必须指定关系的两面及其相关名称，在您的情况下，将是这样的:

class UserProfileResource(ModelResource):
    home_address = fields.CharField(attribute='home_address')
    user = fields.ToOneField('path.to.api.UserResource', attribute='user', related_name='profile')
         #in my case it was a toManyField, I don't know if toOneField works here, you can try toManyField.

class UserResource(ModelResource):
    profile = fields.ToOneField(UserProfileResource, 'profile', related_name='user', full=True)