django form表单和代码 处理登录用户名字密码

#_*_encoding:utf-8_*_

from django.contrib.authimport authenticate, login

# Create your views here.

from django.contrib.auth.backendsimport ModelBackend

from django.shortcutsimport render

from .modelsimport UserProfile

from django.db.modelsimport Q

from django.views.generic.baseimport View

from .formsimport LoginForm

class LoginView(View):

    #无需判断是get还是post  def get（） 这个方法会自动判断

    def get(self,request):

        return render(request,"login.html",{})

def post(self,request):

        login_form= LoginForm(request.POST)

if login_form.is_valid():

            user_name= request.POST.get("username","")

pass_word= request.POST.get("password","")

user= authenticate(username=user_name,password=pass_word)

if useris not None:

                login(request, user)

return render(request,"index.html")

else:

                return render(request,"login.html", {"msg": u"用户名密码错误"})

else:

            return render(request,"login.html",{"login_form":login_form})

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

# 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:

#            login(request,user)

#            return render(request,"index.html")

#        else:

#            return render(request,"login.html",{"msg":u"用户名密码错误"})

#

#

#    elif request.method == "GET":

#        return render(request,"login.html",{})

#_*_encoding:utf-8_*_

__author__= 'Administrator'

__time__= '2018/1/13 12:44'

from djangoimport forms

class LoginForm(forms.Form):

    username= forms.CharField(required=True)

password= forms.CharField(required=True,min_length=5)

{#                    #}

                   

用 户 名

密    码

{%for key,error in login_form.errors.items %}{{error }}{%endfor %}{{msg }}

忘记密码？

">

{#                #}

                    {%csrf_token %}