Django打造在线教育平台_day_4： 完成用户登录功能

from django.shortcuts import render
from django.contrib.auth import authenticate, login #倒入验证输入是否合法模块和登录模块
# Create your views here.

def user_login(request):
    if request.method == ‘POST‘:
        user_name = request.POST.get(‘username‘, ‘‘)
        pass_word = request.POST.get(‘password‘, ‘‘)

        # 向数据库发起验证请求用户名和密码是否正确
        # 正确会返回一个对象， 不正确会返回None
        user = authenticate(username=user_name, password=pass_word)
        if user is not None:
            login(request, user)  # 登录
            return render(request, ‘index.html‘)
        else:
            return render(request, "login.html",{‘msg‘: "用户名或者密码错误"}) 
　　
　　　　 elif request.method == ‘GET‘: return render(request, "login.html", {})

from users.views import user_login

urlpatterns = [

    url(r‘^login/$‘, user_login, name=‘login‘),
]

from django.contrib.auth.backends import ModelBackend
from django.db.models import Q

from .models import UserProfile
# Create your views here.

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

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