Django提供了多种装饰器， 其中login_required可能是经常会使用到的。 这里介绍下四种使用此装饰器的办法。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
当然， 在使用前， 记得在工程目录的settings.py中设置好LOGIN_URL文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
使用方法文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
1. URLconf中装饰文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
from django.contrib.auth.decorators import login_required, permission_required
from django.views.generic import TemplateView
from .views import VoteView
urlpatterns = [
url(r'^about/', login_required(TemplateView.as_view(template_name="secret.html"))),
url(r'^vote/', permission_required('polls.can_vote')(VoteView.as_view())),
]2. 装饰基于函数的视图文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
from django.contrib.auth.decorators import login_required
from django.http import HttpResponse
@login_required
def my_view(request):
if request.method == 'GET':
# <view logic>
return HttpResponse('result')3. 装饰类的视图
文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
from django.contrib.auth.decorators import login_required from django.utils.decorators import method_decorator from django.views.generic import TemplateView class ProtectedView(TemplateView): template_name = 'secret.html' @method_decorator(login_required) def dispatch(self, *args, **kwargs): return super(ProtectedView, self).dispatch(*args, **kwargs)
4. 装饰通过Mixin类继承来实现文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
from django.contrib.auth.decorators import login_required
from django.http import HttpResponseRedirect
from django.shortcuts import render
from django.views.generic import View
from .forms import MyForm
class LoginRequiredMixin(object):
@classmethod
def as_view(cls, **initkwargs):
view = super(LoginRequiredMixin, cls).as_view(**initkwargs)
return login_required(view)
class MyFormView(LoginRequiredMixin, View):
form_class = MyForm
initial = {'key': 'value'}
template_name = 'form_template.html'
def get(self, request, *args, **kwargs):
form = self.form_class(initial=self.initial)
return render(request, self.template_name, {'form': form})
def post(self, request, *args, **kwargs):
# code hereDjango 用户登陆访问限制 @login_required文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
在网站开发过程中，经常会遇到这样的需求：用户登陆系统才可以访问某些页面，如果用户没有登陆而直接访问就会跳转到登陆界面。文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
要实现这样的需求其实很简单：文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
1、在相应的 view 方法的前面添加 django 自带的装饰器 @login_required文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
2、在 settings.py 中配置 LOGIN_URL 参数文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
3、修改 login.html 表单中的 action 参数文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
# views.py
from djanco.contrib.auth.decorators import login_required
from django.shortcuts import render_to_response
@login_required
def index(request):
return render_to_response('index.html')# settings.py .... LOGIN_URL = '/accounts/login/' # 根据你网站的实际登陆地址来设置 ....
如果要使用 django 默认登陆地址，则可以通过在 urls.py 中添加如此配置：文章源自菜鸟学院-https://www.cainiaoxueyuan.com/bc/27558.html
# urls.py .... url(r'^accounts/login/', views.login), ....
# login.html
<div class="container">
<form class="form-signin" action="/accounts/login/" method="post">
{% csrf_token %}
<!--csrf_token：生成令牌-->
<h2 class="form-signin-heading" align="center">登录系统</h2>
<label for="inputUsername" class="sr-only">username</label>
<input type="text" name="username" id="inputUsername" class="form-control" placeholder="username" required autofocus>
<label for="inputPassword" class="sr-only">Password</label>
<input type="password" name="password" id="inputPassword" class="form-control" placeholder="Password" required>
<div class="checkbox">
<label>
<input type="checkbox" value="remember-me"> 记住密码
</label>
</div>
<br />
<button class="btn btn-lg btn-primary btn-block" type="submit">登录</button>
<br />
<span style="color: red;">{{ login_err }}</span>
</form>
</div>
<!-- /container -->