1. 构建登陆视图

1.1 account/forms.py

from django import forms

class LoginForm(forms.Form):
    username = forms.CharField()
    password = forms.CharField(widget=forms.PasswordInput)

1.2 account/views.py

from django.shortcuts import render
from django.http import HttpResponse
from django.contrib.auth import authenticate,login
from .forms import LoginForm

def user_login(request):
    if request.method == "POST":
        form = LoginForm(request.POST)
        if form.is_valid():
            cd = form.cleaned_data
            user = authenticate(request,
                    username=cd['username'],
                    password=cd['password'])
            if user is not None:
                if user.is_active:
                    login(request,user)
                    return HttpResponse('Authenticated successfully')
                else:
                    return HttpResponse('Disabled account')
            else:
                return HttpResponse('Invalid login')
    else:
        form = LoginForm()
    return render(request,'account/login.html',{'form':form})

1.3 account/urls.py

from django.urls import Path
from . import views

urlpatterns = [
        path('login/',views.user_login,name='login'),
        ]

1.4 bookmarks/urls.py

from django.contrib import admin
from django.urls import path,include

urlpatterns = [
    path('admin/', admin.site.urls),
    path('account/',include('account.urls')),
]