在Django中加载具有多对一关系的夹具

概述djangoproject.com上的Django教程给出了这样的模型： import datetimefrom django.utils import timezonefrom django.db import modelsclass Poll(models.Model): question = models.CharField(max_length = 200) pub djangoproject.com上的Django教程给出了这样的模型：

import datetimefrom django.utils import timezonefrom django.db import modelsclass Poll(models.Model):    question = models.CharFIEld(max_length = 200)    pub_date = models.DateTimeFIEld('date published')    def __unicode__(self):        return self.question    def was_published_recently(self):        Now = timezone.Now()        return Now - datetime.timedelta(days = 1) <= self.pub_date < Now    was_published_recently.admin_order_fIEld = 'pub_date'    was_published_recently.boolean = True    was_published_recently.short_description = 'Published recently?'class Choice(models.Model):    poll = models.ForeignKey(Poll)    choice_text = models.CharFIEld(max_length = 200)    Votes = models.IntegerFIEld(default = 0)    def __unicode__(self):        return self.choice_text

Choice使用ForeignKey,这是一种多对一的关系,所以我应该能够使用一个选择进行多个轮询.如果我尝试从夹具中加载它,如下所示：

[    {        "model": "polls.Poll","pk": 3,"fIElds": {            "question": "What time do you sleep?","pub_date": "2013-07-29T10:00:00+00:00"        }    },{        "model": "polls.Poll","pk": 4,"fIElds": {            "question": "What time do you get up?",{        "model": "polls.Choice","fIElds": {            "poll": [{"pk": 3},{"pk": 4}],"choice_text": "10:00","Votes": 0        }    }]

我收到此错误：

DeserializationError: Problem installing fixture '/.../poll/polls/fixtures/initial_data.Json': [u"'[{u'pk': 3},{u'pk': 4}]' value must be an integer."]

或者：

{        "model": "polls.Choice","fIElds": {            "poll": [3,4],"Votes": 0        }    }

我收到此错误：

DeserializationError: Problem installing fixture '/.../poll/polls/fixtures/initial_data.Json': [u"'[3,4]' value must be an integer."]

如何从夹具中加载多对一关系？

解决方法 这是教程中的引用：

Finally,note a relationship is defined,using ForeignKey. That tells
Django each Choice is related to a single Poll. Django supports all
the common database relationships: many-to-ones,many-to-manys and
one-to-ones.

每个Choice都与一个Poll相关,并且您尝试将一个键列表传递给Choice.poll字段.

但是,每次民意调查都可以与几种选择相关：

{    "pk": 4,"model": "polls.Choice","fIElds": {        "Votes": 0,"poll": 2,"choice_text": "Meh."    }},{    "pk": 5,"choice_text": "Not so good."    }}

希望有所帮助.

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