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This commit is contained in:
ladeng07
2022-05-06 15:45:57 +08:00
parent 12f390949b
commit 51552904f9
2347 changed files with 120102 additions and 53549 deletions
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venv/Lib/site-packages/django/db/models/manager.py
+21 -31
View File
@@ -33,7 +33,7 @@ class BaseManager:
def __str__(self):
"""Return "app_label.model_label.manager_name"."""
return "%s.%s" % (self.model._meta.label, self.name)
return '%s.%s' % (self.model._meta.label, self.name)
def __class_getitem__(cls, *args, **kwargs):
return cls
@@ -46,12 +46,12 @@ class BaseManager:
Raise a ValueError if the manager is dynamically generated.
"""
qs_class = self._queryset_class
if getattr(self, "_built_with_as_manager", False):
if getattr(self, '_built_with_as_manager', False):
# using MyQuerySet.as_manager()
return (
True, # as_manager
None, # manager_class
"%s.%s" % (qs_class.__module__, qs_class.__name__), # qs_class
'%s.%s' % (qs_class.__module__, qs_class.__name__), # qs_class
None, # args
None, # kwargs
)
@@ -69,7 +69,7 @@ class BaseManager:
)
return (
False, # as_manager
"%s.%s" % (module_name, name), # manager_class
'%s.%s' % (module_name, name), # manager_class
None, # qs_class
self._constructor_args[0], # args
self._constructor_args[1], # kwargs
@@ -83,22 +83,18 @@ class BaseManager:
def create_method(name, method):
def manager_method(self, *args, **kwargs):
return getattr(self.get_queryset(), name)(*args, **kwargs)
manager_method.__name__ = method.__name__
manager_method.__doc__ = method.__doc__
return manager_method
new_methods = {}
for name, method in inspect.getmembers(
queryset_class, predicate=inspect.isfunction
):
for name, method in inspect.getmembers(queryset_class, predicate=inspect.isfunction):
# Only copy missing methods.
if hasattr(cls, name):
continue
# Only copy public methods or methods with the attribute
# queryset_only=False.
queryset_only = getattr(method, "queryset_only", None)
if queryset_only or (queryset_only is None and name.startswith("_")):
# Only copy public methods or methods with the attribute `queryset_only=False`.
queryset_only = getattr(method, 'queryset_only', None)
if queryset_only or (queryset_only is None and name.startswith('_')):
continue
# Copy the method onto the manager.
new_methods[name] = create_method(name, method)
@@ -107,15 +103,11 @@ class BaseManager:
@classmethod
def from_queryset(cls, queryset_class, class_name=None):
if class_name is None:
class_name = "%sFrom%s" % (cls.__name__, queryset_class.__name__)
return type(
class_name,
(cls,),
{
"_queryset_class": queryset_class,
**cls._get_queryset_methods(queryset_class),
},
)
class_name = '%sFrom%s' % (cls.__name__, queryset_class.__name__)
return type(class_name, (cls,), {
'_queryset_class': queryset_class,
**cls._get_queryset_methods(queryset_class),
})
def contribute_to_class(self, cls, name):
self.name = self.name or name
@@ -165,8 +157,8 @@ class BaseManager:
def __eq__(self, other):
return (
isinstance(other, self.__class__)
and self._constructor_args == other._constructor_args
isinstance(other, self.__class__) and
self._constructor_args == other._constructor_args
)
def __hash__(self):
@@ -178,24 +170,22 @@ class Manager(BaseManager.from_queryset(QuerySet)):
class ManagerDescriptor:
def __init__(self, manager):
self.manager = manager
def __get__(self, instance, cls=None):
if instance is not None:
raise AttributeError(
"Manager isn't accessible via %s instances" % cls.__name__
)
raise AttributeError("Manager isn't accessible via %s instances" % cls.__name__)
if cls._meta.abstract:
raise AttributeError(
"Manager isn't available; %s is abstract" % (cls._meta.object_name,)
)
raise AttributeError("Manager isn't available; %s is abstract" % (
cls._meta.object_name,
))
if cls._meta.swapped:
raise AttributeError(
"Manager isn't available; '%s' has been swapped for '%s'"
% (
"Manager isn't available; '%s' has been swapped for '%s'" % (
cls._meta.label,
cls._meta.swapped,
)