Django 测试：类型对象没有属性“对象”

Question

在我的网络应用程序中，我有地点和各自的开放时间。OpeningHours 模型如下所示：

class OpeningHours(models.Model):
    location = models.ForeignKey(
        Location, related_name='hours', on_delete=models.CASCADE)
    weekday = models.PositiveSmallIntegerField(choices=WEEKDAYS, unique=True)
    from_hour = models.PositiveSmallIntegerField(choices=HOUR_OF_DAY_12)
    to_hour = models.PositiveSmallIntegerField(choices=HOUR_OF_DAY_12)

    class Meta:
        ordering = ('weekday', 'from_hour')
        unique_together = ('weekday', 'from_hour', 'to_hour')

    def get_weekday_display(self):
        return WEEKDAYS[self.weekday][1]

    def get_hours_display(self):
        return '{} - {}'.format(HOUR_OF_DAY_12[self.from_hour][1], HOUR_OF_DAY_12[self.to_hour][1])

    def get_start_hour_display(self):
        return HOUR_OF_DAY_12[self.from_hour][1]

    def get_end_hour_display(self):
        return HOUR_OF_DAY_12[self.to_hour][1]

    def __str__(self):
        return '{}: {} - {}'.format(self.get_weekday_display(),
                                    HOUR_OF_DAY_12[self.from_hour][1], HOUR_OF_DAY_12[self.to_hour][1])

我正在尝试测试一个模型，类似于我在应用程序中成功测试其他模型的方式：

class OpeningHours(TestCase):

    def create_opening_hours(self, weekday=1, from_hour=12, to_hour=15):
        self.location = create_location(self)
        return OpeningHours.objects.create(location=self.location, weekday=weekday, from_hour=from_hour, to_hour=to_hour)

    def test_opening_hours(self):
        oh = self.create_opening_hours()
        self.assertTrue(isinstance(oh, OpeningHours))
        self.assertTrue(0 <= oh.from_hour <= 23)
        self.assertTrue(0 <= oh.to_hour <= 23)
        self.assertTrue(1 <= oh.weekday <= 7)

，但是在运行测试时我收到此错误消息：

Traceback (most recent call last):
  File "<app_path>/tests.py", line 137, in test_opening_hours
    oh = self.create_opening_hours()
  File "<app_path>/tests.py", line 134, in create_opening_hours
    return OpeningHours.objects.create(location=self.location, weekday=weekday, from_hour=from_hour, to_hour=to_hour)
AttributeError: type object 'OpeningHours' has no attribute 'objects'

ordering我认为这可能与或元数据有关unique_together，但不确定如何解决这个问题......非常感谢任何正确方向的指针。

Answer 1

您已经OpeningHours为测试类和模型类指定了名称。因此，将测试类的名称更改为除OpeningHours解决上述问题之外的任何名称。