【发布时间】：2019-03-31 22:20:55
【问题描述】：
我正在尝试使用后端身份验证来让用户通过电子邮件进行身份验证，但用户无法通过电子邮件进行身份验证并返回“无”
后端.py
from django.contrib.auth.models import User
class EmailAuth():
"""Authenticate a user by an exact match on the email and password"""
def authenticate(self, username=None, password=None):
"""
Get an instance of `User` based off the email and verify the
password
"""
try:
user = User.objects.get(email=username)
if user.check_password(password):
return user
return None
except User.DoesNotExist:
return None
def get_user(self, user_id):
"""
Used by the Django authentiation system to retrieve a user instance
"""
try:
user = User.objects.get(pk=user_id)
if user.is_valid():
return user
return None
except User.DoesNotExist:
return None
accounts/settings.py
AUTHENTICATION_BACKENDS = [
'accounts.backends.EmailAuth',
'django.contrib.auth.backends.ModelBackend'
]
accounts/views.py 摘录，用户为“无”，但用户名和密码被传递给身份验证函数
def login_by_email(request):
"""Return a login page"""
if request.user.is_authenticated:
return redirect(reverse('index'))
if request.method == "POST":
login_form = UserLoginForm(request.POST)
if login_form.is_valid():
user = auth.authenticate(username=request.POST['username'],
password=request.POST['password'])
# import pdb; pdb.set_trace()
if user:
login(user=user, request=request)
# login(request, form.get_user())
messages.success(request, "You have successfully logged in!")
return redirect(reverse('index'))
else:
login_form.add_error(None, "Your username or password is incorrect")
else:
login_form = UserLoginForm()
return render(request, 'login.html', {'login_form': login_form})
帐户/urls.py
from django.conf.urls import url, include
from accounts.views import logout, login_by_email, registration, user_profile
from accounts import urls_reset
urlpatterns = [
url(r'^logout/', logout, name="logout"),
url(r'^login/', login_by_email, name="login"),
url(r'^register/', registration, name="registration"),
url(r'^profile/', user_profile, name="profile"),
url(r'', include(urls_reset))
]
根项目 urls.py
from django.conf.urls import url, include
from django.contrib import admin
from django.urls import path
from accounts.views import index
from accounts import urls as accounts_urls
urlpatterns = [
url(r'^admin/', admin.site.urls),
url(r'^$', index, name="index"),
url(r'^accounts/', include(accounts_urls))
]
工作解决方案在 Ciaran Kehoe 的帮助下
后端.py
from django.contrib.auth.hashers import check_password
from django.contrib.auth.models import User
class EmailAuth():
"""
Authenticate a user by an exact match on the email and password
"""
def authenticate(self, request, username=None, password=None):
try:
user = User.objects.get(email=username)
if user.check_password(password):
return user
return None
except User.DoesNotExist:
return None
def get_user(self, user_id):
try:
return User.objects.get(pk=user_id)
except User.DoesNotExist:
return None
accounts/views.py
def login_by_email(request):
"""Return a login page"""
if request.user.is_authenticated:
return redirect(reverse('index'))
if request.method == "POST":
login_form = UserLoginForm(request.POST)
if login_form.is_valid():
user = auth.authenticate(request, username=request.POST['username'],
password=request.POST['password'])
if user:
login(request, user, backend='accounts.backends.EmailAuth')
messages.success(request, "You have successfully logged in!")
return redirect(reverse('index'))
else:
login_form.add_error(None, "Your username or password is incorrect")
else:
login_form = UserLoginForm()
return render(request, 'login.html', {'login_form': login_form})
【问题讨论】：
-
你在这里打错了：
user = User.onjects.get(pk=user_id)，你应该重命名login()视图，因为你在这里有冲突：login(user=user, request=request)。 -
我已更正错字并重命名视图，但 backends.EmailAuth.authenticate 方法返回的用户仍然是 none
-
是的，我后来看到了问题中提到的“工作解决方案”。对于在
django 2.1中创建custom backend的人来说，这是一个已知问题。下面我回答请标记为已解决，有一天它会立即帮助某人。谢谢。
标签： django django-views