这篇文章来记录我学习Django中的Auth组件。
Django提供了一个强大的用户认证系统–Auth组件,对于实现用户认证的登录功能会更加方便。
导入auth模块与其相应内容
from django.contrib import auth #导入auth模块
from django.contrib.auth.models import User #导入数据库(用户数据储存在auth_user中)
from django.contrib.auth.decorators import login_required #导入装饰器login_required
auth组件中方法以及描述:
auth中的方法 | 描述 |
---|---|
authenticate(request,username=*,password=*) | 登录验证(若输入的账号密码正确,则返回一个对象。否则返回None) |
login(request,userobj) | 记录userobj对象用户的登录状态(登录) |
logout(request) | 退出目前登录用户的登录状态(注销) |
is_authenticated() | 判断目前用户是否通过登录认证 |
@login_required | 登录判断的装饰器(未登录则跳转到默认的URL“/accounts/login/”中,并会记录当前访问的url路径)(下面有补充!!!) |
create_user(username = *, password = *) | 创建普通用户 |
create_superuser(username=*,password=*,email=*) | 创建超级用户 |
check_password(password) | 判断当前登录用户的面是否与输入值相同(相同返回True,否则返回False) |
set_password(password) | 修改当前登录用户的密码 |
对@login_required装饰器的补充,在未登录的默认跳转URl路径为/accounts/login/。其路径可以在settings.py中添加以下设置来修改设定(修改成默认URL路径为/login/)。
LOGIN_URL = '/login/'
用户数据库(auth_user)中用户属性的部分介绍:
下面实战利用Auth组件实战操作,结合上Form组件简单制作了一个带有登录,注册,注销,修改密码功能的系统。
(路由)urls.py
from django.contrib import admin
from django.urls import path
from firstapp import views
urlpatterns = [
path('admin/', admin.site.urls), #管理页面
path('register/', views.register), #注册
path('login/',views.login), #登录
path('index/',views.index), #大厅
path('logout/', views.logout), #注销
path('changepassword/', views.changepassword), #修改密码
]
(校验)forms.py
from django import forms
from django.forms import widgets
from django.core.validators import RegexValidator
from django.core.exceptions import ValidationError
class RegForm(forms.Form):
username = forms.CharField(
label="用户名",
min_length=2,
max_length=6,
error_messages={
'min_length': '用户名的长度不能小于2',
'max_length':'用户名的长度不能大于6',
'required':'用户名不能为空',
}
)
password = forms.CharField(
label="密码",
widget=forms.widgets.PasswordInput(),
error_messages={
'required': '密码不能为空',
}
)
re_password = forms.CharField(
label="确认密码",
widget=forms.widgets.PasswordInput(),
error_messages={
'required': '密码不能为空',
}
)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
for field in self.fields:
self.fields[field].widget.attrs.update({
'class': 'form-control'})
def clean(self):
pwd = self.cleaned_data.get('password')
re_pwd = self.cleaned_data.get('re_password')
if pwd == re_pwd:
return self.cleaned_data
self.add_error('re_password', '两次密码不一致')
raise ValidationError('两次密码不一致')
class LogForm(forms.Form):
username = forms.CharField(
label="用户名",
error_messages={
'required':'用户名不能为空',
}
)
password = forms.CharField(
label="密码",
widget=forms.widgets.PasswordInput(),
error_messages={
'required': '密码不能为空',
}
)
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
for field in self.fields:
self.fields[field].widget.attrs.update({
'class': 'form-control '})
(视图)views.py
from django.shortcuts import render,HttpResponse,redirect
from firstapp.forms import RegForm,LogForm
from django.contrib import auth
from django.contrib.auth.models import User
from django.contrib.auth.decorators import login_required
def register(request): #注册函数
form_obj = RegForm()
if request.method == 'POST':
form_obj = RegForm(request.POST)
if form_obj.is_valid():
username=request.POST.get('username')
password =request.POST.get('password')
User.objects.create_user(username = username, password = password)
return redirect('/login/')
return render(request, 'register.html', {
'form_obj': form_obj})
def login(request): #登录函数
form_obj = LogForm()
if request.method =="POST":
form_obj = LogForm(request.POST)
if form_obj.is_valid():
username = request.POST.get('username')
password = request.POST.get('password')
obj = auth.authenticate(request,username=username,password=password)
if obj:
auth.login(request,obj)
path = request.GET.get("next") or '/index/'
return redirect(path)
else:
print('用户名与密码不匹配')
return render(request,'login.html' , {
'form_obj': form_obj})
@login_required
def index(request): #大厅函数
return render(request,'index.html')
@login_required
def logout(request): #注销函数
auth.logout(request)
return redirect('/login/')
@login_required
def changepassword(request): #修改密码函数
if request.method == 'GET':
return render(request,'changepassword.html')
oldpassword = request.POST.get('oldpassword')
newpassword = request.POST.get('newpassword')
if request.user.check_password(oldpassword):
request.user.set_password(newpassword)
request.user.save()
return redirect('/login/')
return redirect('/changepassword/')
(登录页面)login.html
<html lang="zh-CN">
<head>
<meta http-equiv="content-Type" charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>登录title>
<link rel="stylesheet" href="/static/bootstrap-3.3.7/css/bootstrap.css">
head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-offset-5">
<h3>小小城序员--登录界面h3>
div>
div>
>
div>
<div class="container">
<div class="row">
<div class="col-sm-8 col-sm-offset-2" style="margin-top: 70px">
<form class="form-horizontal" novalidate action="" method="post">
{% csrf_token %}
<div class="form-group {% if form_obj.username.errors %} has-error {% endif %} ">
<label for="{
{ form_obj.username.id_for_label }}"
class="col-sm-2 control-label">{
{ form_obj.username.label }}label>
<div class="col-sm-10">
{
{ form_obj.username }}
<span id="helpBlock2" class="help-block">{
{ form_obj.username.errors }}span>
div>
div>
<div class="form-group {% if form_obj.password.errors %} has-error {% endif %} ">
<label for="{
{ form_obj.password.id_for_label }}"
class="col-sm-2 control-label">{
{ form_obj.password.label }}label>
<div class="col-sm-10">
{
{ form_obj.password }}
<span id="helpBlock2" class="help-block">{
{ form_obj.password.errors }}span>
div>
div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-block btn-success">登录button>
div>
div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<a class="btn btn-block btn-warning" href="/register/" style="color: white;">注册a>
div>
div>
form>
div>
div>
div>
<script src="/static/Jquery-3.3.1.js">script>
<script>
$('input').focus(function () {
$(this).next().text('').parent().parent().removeClass('has-error')
})
script>
body>
html>
(注册页面)register.html
<html lang="zh-CN">
<head>
<meta http-equiv="content-Type" charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>注册title>
<link rel="stylesheet" href="/static/bootstrap-3.3.7/css/bootstrap.css">
head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-offset-5">
<h3>小小城序员--注册界面h3>
div>
div>>
div>
<div class="container">
<div class="row">
<div class="col-sm-8 col-sm-offset-2" style="margin-top: 70px">
<form class="form-horizontal" novalidate action="" method="post">
{% csrf_token %}
<div class="form-group {% if form_obj.username.errors %} has-error {% endif %} ">
<label for="{
{ form_obj.username.id_for_label }}"
class="col-sm-2 control-label">{
{ form_obj.username.label }}label>
<div class="col-sm-10">
{
{ form_obj.username }}
<span id="helpBlock2" class="help-block">{
{ form_obj.username.errors }}span>
div>
div>
<div class="form-group {% if form_obj.password.errors %} has-error {% endif %} ">
<label for="{
{ form_obj.password.id_for_label }}"
class="col-sm-2 control-label">{
{ form_obj.password.label }}label>
<div class="col-sm-10">
{
{ form_obj.password }}
<span id="helpBlock2" class="help-block">{
{ form_obj.password.errors }}span>
div>
div>
<div class="form-group {% if form_obj.re_password.errors %} has-error {% endif %}">
<label for="{
{ form_obj.re_password.id_for_label }}"
class="col-sm-2 control-label">{
{ form_obj.re_password.label }}label>
<div class="col-sm-10">
{
{ form_obj.re_password }}
<span id="helpBlock2" class="help-block">{
{ form_obj.re_password.errors }}span>
div>
div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-block btn-success">注册button>
div>
div>
form>
div>
div>
div>
<script src="/static/Jquery-3.3.1.js">script>
<script>
$('input').focus(function () {
$(this).next().text('').parent().parent().removeClass('has-error')
})
script>
body>
html>
(大厅页面)index.html
<html lang="zh-CN">
<head>
<meta http-equiv="content-Type" charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>大厅title>
<link rel="stylesheet" href="/static/bootstrap-3.3.7/css/bootstrap.css">
head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-offset-5">
<h3>小小城序员--大厅界面h3>
div>
<div class="col-md-offset-6">
<a class="btn btn-danger" href="/logout/" style="color: white;">注销账号a>
div>
<br>
<div class="col-md-offset-6">
<a class="btn btn-warning" href="/changepassword/" style="color: white;">修改密码a>
div>
div>>
div>
body>
html>
(修改密码页面)changepassword.html
<html lang="zh-CN">
<head>
<meta http-equiv="content-Type" charset="UTF-8">
<meta http-equiv="x-ua-compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>修改密码title>
<link rel="stylesheet" href="/static/bootstrap-3.3.7/css/bootstrap.css">
head>
<body>
<div class="container">
<div class="row">
<div class="col-sm-offset-5">
<h3>小小城序员--修改密码界面h3>
div>
div>>
div>
<div class="container">
<div class="row">
<div class="col-sm-8 col-sm-offset-2" style="margin-top: 70px">
<form class="form-horizontal" novalidate action="" method="post">
{% csrf_token %}
<div class="form-group ">
<label class="col-sm-2 control-label">旧密码label>
<div class="col-sm-10">
<input type="password" class="form-control" placeholder="请输入旧密码" name="oldpassword" >
div>
div>
<div class="form-group ">
<label class="col-sm-2 control-label">新密码label>
<div class="col-sm-10">
<input type="password" class="form-control" placeholder="请输入新密码" name="newpassword" >
div>
div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-block btn-success">修改button>
div>
div>
form>
div>
div>
div>