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[py][mx]django自定义认证类-实现邮箱作为用户名登录

2018-01-31 22:35 671 查看

创建自定义验证用户名密码类CustomBackend

users/views.py

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

# Create your views here.
from users.models import UserProfile

class CustomBackend(ModelBackend):  # 继承认证类,diy它
def authenticate(self, request, username=None, password=None, **kwargs):
try:  # 验证用户名密码 否则返回None
user = UserProfile.objects.get(username=username)  # 表示有这个用户 查处自定义usermodel的用户名,
if user.check_password(password):  # 表示这个用户密码正确, 这里django存储密码是加密的,必须用其下这个方法加密后比对是否正确
return user
except Exception as e:
return None  # 密码错误返回None

def user_login(request):
if request.method == "POST":
user_name = request.POST.get("username", "")
pass_word = request.POST.get("password", "")
user = authenticate(username=user_name, password=pass_word)
if user is not None:  # 用户名密码验证成功
login(request, user)  # django执行用户登录
return render(request, "index.html")
else:
return render(request, "index.html", {})

elif request.method == "GET":
return render(request, "login.html", {})

users/settings.py

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

断点调试, 确实已经用了我们自定义的认证类.

允许用户名用邮箱登录

且的关系
user = UserProfile.objects.get(username=username,email=username)

或的关系: django自带了Q实现
from django.db.models import Q

user = UserProfile.objects.get(Q(username=username) | Q(email=username))

users/views.py完整的

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

class CustomBackend(ModelBackend):  # 继承认证类,diy它
def authenticate(self, request, username=None, password=None, **kwargs):
try:  # 验证用户名密码 否则返回None
user = UserProfile.objects.get(Q(username=username) | Q(email=username))  # 表示有这个用户 查处自定义usermodel的用户名,
if user.check_password(password):  # 表示这个用户密码正确, 这里django存储密码是加密的,必须用其下这个方法加密后比对是否正确
return user
except Exception as e:
return None  # 密码错误返回None

前端输错用户名密码错误提示

users/views.py

def user_login(request):
if request.method == "POST":
user_name = request.POST.get("username", "")
pass_word = request.POST.get("password", "")
user = authenticate(username=user_name, password=pass_word)
if user is not None:  # 用户名密码验证成功
login(request, user)  # django执行用户登录
return render(request, "index.html")
else:
return render(request, "login.html", {'msg':"用户名或密码错误"})

elif request.method == "GET":
return render(request, "login.html", {})

templates/login.html

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>login</title>
</head>
<body>
<div>
<form action="/login/" method="post">
<p><input type="text" name="username" placeholder="username"></p>
<p><input type="text" name="password" placeholder="password"></p>
<p><input type="submit"></p>
{% csrf_token %}
</form>
{{ msg }}
</div>
</body>
</html>

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