Django dumpdata和loaddata不能用于多对多中介模型 [英] Django dumpdata and loaddata not working for many-to-many intermediary model

问题描述

我在以下模型中使用了Django 1.2.3的dumpdata：

I am using dumpdata with Django 1.2.3 on the following model:

class Bar(models.Model):
    ...

class Foo(models.Model):
    bars = models.ManyToManyField(Bar, through="Foo_bar", blank=True, null=True)
    ...

class Foo_bar(models.Model):
    foo = models.ForeignKey(Foo)
    bar = models.ForeignKey(Bar)
    status = models.IntegerField()
    ...

json fixture将与Foo对象中的Foos，当我尝试使用fixture运行loaddata时，导致AttributeError：

The json fixture serializes the bars associated with Foos in the Foo objects, resulting in an AttributeError when I try to run loaddata with the fixture:

AttributeError: Cannot set values on a ManyToManyField which specifies an intermediary model.  Use App.Foo_bar's Manager instead.

根据我的阅读，dumpdata可能已经被修复为不能序列化m2m，或者loaddata被修改为正确处理它们，但是似乎不是这样。我试过了 - 自然的旗帜，还是没有运气。任何想法？

Based on what I've read, dumpdata may have been fixed to not serialize m2m, or loaddata fixed to properly deal with them, but it doesn't seem so. I've tried the --natural flag, still no luck. Any ideas?

提前感谢

推荐答案

您需要使用固定装置，django_extension包中的命令 dumpscript 实际上是对于处理具有复杂关系的夹具很有用。

文件中没有使用主键，它只是一个只使用对象的python脚本，因此可以使用 object.save（） call。

Depending on what you need to do with your fixtures, the command "dumpscript" from the django_extension package is really useful for handling fixture with complex relations.
No primary keys are used in the file, it's just a python script which only uses objects, and as such can re-create your whole db simply using object.save() calls.

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