本文将会介绍小白如何完成一个用户登录注册系统
新建一个Django项目,名字为login_register,并且使用命令manage.py startapp.User(名字自己随便起)
最终django项目结构如下图所示
forms.py是之前通过form表单写的注册功能,可以忽略这个py文件
from django.urls import path
from User import views
urlpatterns = [
# path('admin/', admin.site.urls),
path('login/',views.login,name ='login'),
path('index/',views.index,name = 'index'),
path('register/',views.register,name = 'register'),
]
urls.py
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>登录</title>
</head>
<body>
<h1>
<p style="text-align:center">登录</p>
</h1>
<center>
<form action="" method="post">
{% csrf_token %}
<p style="text-align:center">用户:<input type="text" name="username" /></p>
<p style="text-align:center">密码:<input type="password" name="password"/></p>
<p style="text-align:center"> <input type="submit" value="登录" /> <p style="color: #ff0000;text-align: center">{{error}}</p> </form>
</body>
</html>
login.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>注册</title>
</head>
<body>
<h1>
<p style="text-align:center">新用户注册</p>
</h1>
<center>
<form action="" method="post">
{% csrf_token %}
<p style="text-align:center">用户:<input type="text" name="username" /></p>
<p style="text-align:center">邮箱:<input type="text" name="email"/> </p>
<p style="text-align:center">密码:<input type="password" name="password"/></p>
<p style="text-align:center"> <input type="submit" value="注册" /> <p style="color: #ff0000;text-align: center">{{error_name}}</p> </form>
</body>
</html>
register.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<h1>欢迎登陆</h1>
</body>
</html>
index.html
from django.db import models # Create your models here.
class WangUser(models.Model):
username = models.CharField(max_length=32,unique=True) # 用户名
password = models.CharField(max_length=32) # 密码
email = models.CharField(max_length=32) # 邮箱
User/models.py
from django.shortcuts import render, redirect,HttpResponse
from django.shortcuts import render
# Create your views here.
from User import models
from .forms import UserReg def login(request):
if request.method == 'POST':
username = request.POST.get('username')
password = request.POST.get('password')
obj_user = models.WangUser.objects.filter(username=username, password=password)
if obj_user:
return redirect('index')
error = '用户名和密码错误'
return render(request, 'login.html', locals()) def index(request):
return render(request, 'index.html') def register(request):
if request.method == 'POST':
username = request.POST.get('username')
email = request.POST.get('email')
password = request.POST.get('password')
user_list = models.WangUser.objects.filter(username=username)
error_name = []
if user_list:
error_name = '用户名已经存在'
return render(request,'register.html',{'error_name':error_name})
else:
username = models.WangUser.objects.create(username=username,password=password,email=email)
username.save()
return redirect('login')
return render(request,'register.html')
User/views.py
切记配置好settings中的数据库,我用的是mysql,配置好后在数据库中创建相应的表。
settings Mysql设置代码
DATABASES = { 'default': { 'ENGINE': 'django.db.backends.mysql', # 使用mysql数据库的都是这个,不变 'NAME': 'XXXXX', # 使用的数据库名称 'USER': 'XXXX', # 登录mysql数据库的用户名称 'PASSWORD': 'XXXXXX', # 登录mysql数据库的用户密码 'HOST': '127.0.0.1', # 表明使用的是本地mysql数据库 'PORT': '3306', # 端口号 'OPTIONS': {'init_command': 'SET default_storage_engine=INNODB;'} # 指明innodb设不设置都可以,视情况而定
} }