Question

我正在尝试使用来自2个不同应用程序的3个模型之间的关系。当我尝试在Django中验证模型时，出现以下错误：

CommandError: One or more models did not validate:
tournaments.tournament: 'city' has a relation with model City, which has either not been installed or is abstract.
tournaments.tournament: 'sport' has a relation with model Sport, which has either not been installed or is abstract.

我已在项目中安装了所有应用程序和 django.contrib.sites ，如此处所示。

INSTALLED_APPS = (
    'django.contrib.sites',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'location',
    'sport',
    'team',
    'tournament',
)

试图改变列表中应用的顺序。

这是位置应用程序的模型。

from django.db import models


class Country(models.Model):
    name = models.CharField('Country', max_length=200, unique=True)
    abbr = models.CharField('Abbreviation', max_length=6, unique=True)

    class Meta:
        ordering = ('name',)
        app_label = 'location'
        verbose_name_plural = 'countries'

    def __unicode__(self):
        return self.name


class State(models.Model):
    country = models.ForeignKey('Country', verbose_name=u'country')
    name = models.CharField('State', max_length=200, unique=True)
    abbr = models.CharField('Abbreviation', max_length=6, unique=True)

    class Meta:
        ordering = ('country', 'name')
        unique_together = ('name', 'country')
        app_label = 'location'

    def __unicode__(self):
        return self.name


class City(models.Model):
    state = models.ForeignKey('State', verbose_name=u'state')
    name = models.CharField('City', max_length=200, unique=True)
    abbr = models.CharField('Abbreviation', max_length=6, unique=True)

    class Meta:
        ordering = ('state', 'name')
        unique_together = ('name', 'state')
        app_label = 'location'
        verbose_name_plural = 'cities'

    def __unicode__(self):
        return self.name

这是运动应用程序的模型

from django.db import models


class Sport(models.Model):

    name = models.CharField('Sport', max_length=200, unique=True)
    abbr = models.CharField('Abbreviation', max_length=6, unique=True)

    class Meta:
        ordering = ('name',)
        app_label = 'sport'
        db_table = 'sports'

    def __unicode__(self):
        return self.name

最后锦标赛应用程序的模型

from django.db import models
from location.models import City
from sport.models import Sport


class Tournament(models.Model):

    territory = (
        (1, u'International'),
        (2, u'National'),
        (3, u'Regional'),
    )

    name = models.CharField('Tournament', max_length=200, unique=True)
    abbr = models.CharField('Abbreviation', max_length=6, unique=True)
    city = models.ForeignKey('City', verbose_name=u'city')
    sport = models.ForeignKey('Sport', verbose_name=u'sport')
    regional = models.PositiveIntegerField(u'Status', default=1, choices=territory)
    start = models.DateTimeField('Start Date')
    end = models.DateField('End Date')

    def __unicode__(self):
        return self.name

    class Meta:
        ordering = ('name',)
        unique_together = ('name', 'city', 'regional')
        app_label = 'tournament'

我已经阅读了很多os帖子，以及Django的项目文档，但我找不到什么错误。

Answer 1

首先，您是否已完成python manage.py syncdb和/或在所有应用上运行South迁移？

您是否尝试过更改这些行

city = models.ForeignKey('City', verbose_name=u'city')
sport = models.ForeignKey('Sport', verbose_name=u'sport')

到此？

city = models.ForeignKey('location.City', verbose_name=u'city')
sport = models.ForeignKey('location.Sport', verbose_name=u'sport')

验证错误Django模拟来自不同应用程序的关系

1 个答案: