django 权限控制精简版

 

视图代码:

视图代码
def index(request):
    return render(request,‘index.html‘)

def login(request):
    if request.method == ‘POST‘:
        user = request.POST.get(‘user‘)
        pwd = request.POST.get(‘pwd‘)
        user_obj = models.User.objects.filter(username=user,password=pwd).first() #拿用户对象
        if not user_obj:
            return render(request,‘login.html‘,{‘error‘:"用户名或密码错误"})
        #登录成功
        #查询权限信息
        permissions = user_obj.roles.filter(permissions__url__isnull=False).values("permissions__url").distinct()
        #保存权限信息
        request.session[‘permissions‘] = list(permissions)

        #保存登录状态
        request.session[‘is_login‘] = ‘1‘
        return redirect(‘/index/‘)

    return render(request,‘login.html‘)  当用户登录成功后,获取用户权限,并保存到session中,以前保存登录状态

 

中间件验证

from django.utils.deprecation import MiddlewareMixin
from django.conf import settings
from django.shortcuts import HttpResponse,redirect
import re

class RbacMiddleWare(MiddlewareMixin):

    def process_request(self,request):
        url = request.path_info
        for i  in settings.WHITE_LIST:
            if re.match(i,url):      #判断是否是白名单
                return

        #登录状态校验
        is_login =  request.session.get(‘is_login‘)
        print(is_login)
        if is_login != ‘1‘:
            return redirect(‘/login/‘)

        #免认证校验
        for i  in settings.NO_AUTH_LIST:
            if re.match(i,url):      #判断是否是免认证
                return

        #权限校验
        permissions = request.session.get(‘permissions‘)
        print(permissions)
        for i in permissions:
            if re.match(r‘^{}$‘.format(i[‘permissions__url‘]),url):
                return
        return HttpResponse(‘没有权限,请连线管理员‘)

 

 白名单和面验证设置 settings文件

WHITE_LIST = [
    r‘^/login/$‘,
    r‘^/regist/$‘,
    r‘^/admin.*/‘
]

NO_AUTH_LIST = [
r‘^/index/$‘,
]

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