使用Django实现用户登录，并记录登录用户的Cookies

class LoginForm(forms.Form):
        username = forms.CharField(label=‘用户名:‘,max_length=30)
        password = forms.CharField(label=‘密码:‘,widget=forms.PasswordInput())

def login_validate(request,username,password):
        req_value=False
        user = authenticate(username=username,password=password)
        if user is not None:
                if user.is_active:
                        auth_login(request,user)
                        return True
        return req_value

@csrf_exempt
def login(request):
        errors = []
           if request.method == ‘POST‘:
                form = LoginForm(request.POST)
                if form.is_valid():
                        data = form.cleaned_data
                        username = data[‘username‘]
                        password = data[‘password‘]
                        if login_validate(request,username,password):
                                response = render_to_response(‘index.html‘,{‘username‘:username},RequestContext(request))
                                response.set_cookie(‘username‘,username,3600)
                                username=request.COOKIES.get(‘username‘,‘‘)
                                return response 
                        else:
                                errors.append(‘温馨提示：密码错误，请重新输入！‘)
                else:
                        errors.append(‘温馨提示：用户名不对，请重新输入！‘)
        else:
                form = LoginForm()
        return render_to_response(‘login.html‘,{‘errors‘:errors,‘form‘:form},RequestContext(request))