6.1.用户登录注册

用户登录

通过函数实现登录

users/views.py

from django.contrib.auth import authenticate, login
from django.shortcuts import render


def user_login(request):
    if request.method == 'POST':
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = authenticate(username=username, password=password)
        if user is not None:
            login(request, user)
            return render(request, 'index.html', {})
        else:
            return render(request, 'login.html', {})
    if request.method == 'GET':
        return render(request, 'login.html', {})

hello_django/urls.py

from users.views import user_login

urlpatterns = [
    ...
    path('login/', user_login, name='login'),
]

通过类实现登录

users/views.py

class LoginView(View):
    def get(self, request):
        return render(request, 'login.html', {})

    def post(self, request):
        username = request.POST.get('username')
        password = request.POST.get('password')
        user = authenticate(username=username, password=password)
        if user is not None:
            login(request, user)
            return render(request, 'index.html', {})
        else:
            return render(request, 'login.html', {'msg': '用户名或密码错误'})

hello_django/urls.py

from users.views import LoginView

urlpatterns = [
    ...
    path('login/', LoginView.as_view(), name='login'),
]

自定义用户认证逻辑

hello_django/settings.py

AUTHENTICATION_BACKENDS = (
    'users.views.CustomBackend',
)

users/views.py

from django.contrib.auth import authenticate, login
from django.contrib.auth.backends import ModelBackend
from django.db.models import Q

from users.models import UserProfile
...
class CustomBackend(ModelBackend):
    def authenticate(self, request, username=None, password=None, **kwargs):
        try:
            user = UserProfile.objects.get(Q(username=username) | Q(email=username))
            is_authentication = user.check_password(password)
            if is_authentication:
                return user
            else:
                return None
        except Exception as e:
            return None
...