我想了解Integer.Parse()如何获取UserModel
authenticate我的困惑在于# https://github.com/django/django/blob/master/django/contrib/auth/backends.py
def authenticate(self, username=None, password=None, **kwargs):
UserModel = get_user_model()
if username is None:
username = kwargs.get(UserModel.USERNAME_FIELD)
try:
user = UserModel._default_manager.get_by_natural_key(username)
if user.check_password(password):
return user
except UserModel.DoesNotExist:
# Run the default password hasher once to reduce the timing
# difference between an existing and a non-existing user (#20760).
UserModel().set_password(password)
get_module函数
get_user_model并定义了# https://hdknr.github.io/docs/django/modules/django/contrib/auth.html#get_user_model
def get_user_model():
"Return the User model that is active in this project"
from django.conf import settings
from django.db.models import get_model
try:
app_label, model_name = settings.AUTH_USER_MODEL.split('.')
except ValueError:
raise ImproperlyConfigured("AUTH_USER_MODEL must be of the form 'app_label.model_name'")
user_model = get_model(app_label, model_name)
if user_model is None:
raise ImproperlyConfigured("AUTH_USER_MODEL refers to model '%s' that has not been installed" % settings.AUTH_USER_MODEL)
return user_model
get_model由于# https://docs.djangoproject.com/en/1.8/_modules/django/db/models/
def make_alias(function_name):
# Close function_name.
def alias(*args, **kwargs):
warnings.warn(
"django.db.models.%s is deprecated." % function_name,
RemovedInDjango19Warning, stacklevel=2)
# This raises a second warning.
from . import loading
return getattr(loading, function_name)(*args, **kwargs)
alias.__name__ = function_name
return alias
this_module = sys.modules['django.db.models']
for function_name in ('get_apps', 'get_app_path', 'get_app_paths', 'get_app',
'get_models', 'get_model', 'register_models'):
setattr(this_module, function_name, make_alias(function_name))
现在是get_module功能
我不知道如何
alias获取get_module(app_label, model_name)
中指定的UserAccount模块，因为它等同于
AUTH_USER_MODEL我似乎无法在
中找到加载功能getattr(loading, `get_module`)(app_label, model_name)
有人可以帮帮我吗？感谢