Django Rest框架序列化程序排除深度为2的外键(Django Rest framework serializer exclude foreign key with depth 2)

 我做了一个返回一个对象作为json数据的api。 我正在使用django-rest-framework及其序列化程序。 使用资源（ModelResource），我排除了一些字段，如名为“所有者”的属性。 其中一个领域是一个外键。 我想在api中显示这个字段（所以我使用depth = 2），但是我想排除返回对象中排除的相同字段。 有没有一个很好的方法来做到这一点（我已经尝试了几件事情，没有想要的结果）。 
 
 这是我的（简化）代码：在models.py中： 
 
class MyObject(models.Model):
    name = models.CharField(max_length=256, blank=True)
    parent = models.ForeignKey('self',  blank=True,  null=True, default=None)
    and_some_otherfields = models.otherFields(....)
    owner = models.ForeignKey(User, null=True, blank=True, related_name='myobject_owner')
 
 在resource.py中： 
 
class MyObjectResource(ModelResource):
    model = MyObject
    exclude = ('owner','and some other fields',)
 
 并在用于返回对象的视图中返回： 
 
    data = Serializer(depth=2).serialize(my_object)
    return Response(status.HTTP_200_OK, data)
 
 在响应中，它排除了排除字段（正如我想要的和预期的那样）。 
 
 但在字段父，父我的myobject与我想隐藏的所有字段。 
 
 我正在寻找一种方式来表明，对于这个父对象，序列化程序应该使用相同的资源，或将secundary字段添加到排除列表.... 
 
 如果我使用depth = 1，它只会显示它是否有父项（[]），否则为null，我确实需要知道至少父项的ID。 

I have made an api that returns an object as json data. I Am using the django-rest-framework and its serializer. Using the resources (ModelResource) I excluded some fields, like a property called 'owner'. One of the fields is a foreignkey to itselve. I want to show this field in the api (so I use depth=2), but I want to exclude the same fields as I excluded in the object returning. Is there a nice way to do this (I have tried several things without the wanted result).
 
This is my (simplified) code: in models.py:
 
class MyObject(models.Model):
    name = models.CharField(max_length=256, blank=True)
    parent = models.ForeignKey('self',  blank=True,  null=True, default=None)
    and_some_otherfields = models.otherFields(....)
    owner = models.ForeignKey(User, null=True, blank=True, related_name='myobject_owner')
 
in resource.py:
 
class MyObjectResource(ModelResource):
    model = MyObject
    exclude = ('owner','and some other fields',)
 
and in the view used to return the object it returns this:
 
    data = Serializer(depth=2).serialize(my_object)
    return Response(status.HTTP_200_OK, data)
 
In the response it leaves out the exclude fields (as I wanted and expected).
 
but in the field parent, the parent myobject with all fields I want to hide.
 
I Am looking for a way to indicate that for this parent object, the serializer should use the same Resource, or add the secundary fields to the exclude list....
 
If I use depth =1 it only shows whether it has a parent ([]), or null if not, and i do need to know at least the parent's ID.

原文：https://stackoverflow.com/questions/12261973