本文整理匯總了Python中django.db.models.manager.BaseManager類的典型用法代碼示例。如果您正苦於以下問題：Python BaseManager類的具體用法？Python BaseManager怎麽用？Python BaseManager使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了BaseManager類的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: test_manager_methods
def test_manager_methods(self):
"""
This test ensures that the correct set of methods from `QuerySet`
are copied onto `Manager`.
It's particularly useful to prevent accidentally leaking new methods
into `Manager`. New `QuerySet` methods that should also be copied onto
`Manager` will need to be added to `ManagerTest.QUERYSET_PROXY_METHODS`.
"""
self.assertEqual(
sorted(BaseManager._get_queryset_methods(QuerySet).keys()), sorted(self.QUERYSET_PROXY_METHODS)
)示例2: __str__
name = models.CharField(max_length=100)
slug = models.SlugField()
class Meta:
ordering = ['name']
def __str__(self):
return self.name
class DoesNotExistQuerySet(QuerySet):
def get(self, *args, **kwargs):
raise Author.DoesNotExist
DoesNotExistBookManager = BaseManager.from_queryset(DoesNotExistQuerySet)
class Book(models.Model):
name = models.CharField(max_length=300)
slug = models.SlugField()
pages = models.IntegerField()
authors = models.ManyToManyField(Author)
pubdate = models.DateField()
objects = models.Manager()
does_not_exist = DoesNotExistBookManager()
class Meta:
ordering = ['-pubdate']
示例3: get_manager
def get_manager(cls):
return type('DictManager', (BaseManager.from_queryset(cls)), {})