Django tutorial: Django user registration and login method

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Django is a free open source website framework developed by Python, which can be used Quickly build a high-performance, elegant website!

Learning Django is super hard. It has been so difficult to create the simplest user login and registration interface recently. It has been basically implemented at present. Although the function is very simple, I will make a record and come back later when I learn more deeply. Supplement:

First create the project, go to the directory where the project is located: django-admin startproject demo0414_userauth

Enter the project: cd demo0414_userauth

Create the corresponding app:django-admin startapp account

The structure diagram of the entire project is as shown in the figure

├── account
│ ├── admin.py
│ ├── admin.pyc
│ ├── apps.py
│ ├── init.py
│ ├── init.pyc
│ ├── migrations
│ │ ├ ── 0001_initial.py
│ │ ├── 0001_initial.pyc
│ │ ├── init.py
│ │ └── init.pyc
│ ├── models.py
│ ├── models.pyc
│ ├── tests.py
│ ├── urls.py
│ ├── urls.pyc
│ ├── views.py
│ └── views.pyc
├── demo0414_userauth
│ ├── init.py
│ ├── init.pyc
│ ├── settings.py
│ ├ ── settings.pyc
│ ├── urls.py
│ ├── urls.pyc
│ ├── wsgi.py
│ └── wsgi.pyc
├─ ─ manage.py
└── templates
├── register.html
├── success.html
└── userlogin.html

4 directories, 29 files

Then add the app account in the installed_app of the setting file;

Create a templates folder, which can be placed in the root directory of the project or in the app directory. Generally, it is recommended to place it in the app directory. If you put it in the root directory of the project, you need to set 'DIRS' in TEMPLATES in the setting file: [os.path.join(BASE_DIR,'templates')], otherwise the template cannot be used.

In addition, because this project has page jump problems, in order to prevent CSRF attacks safely, there are relevant settings in the template. I don't know how to use this thing yet. It is said that adding the tag {% csrf_token %} to the form can be achieved, but I have not succeeded. So don't consider this problem first, comment out the middleware 'django.middleware.csrf.CsrfViewMiddleware' in the seeing

and then create the corresponding one in the model Add the corresponding program to the database:

class User(models.Model):
 username = models.CharField(max_length=50)
 password = models.CharField(max_length=50)
 email = models.EmailField()

view. Pdb was used for breakpoint debugging. I liked it very much. I liked it very much. If you are not interested, just comment directly.

#coding=utf-8
from django.shortcuts import render,render_to_response
from django import forms
from django.http import HttpResponse,HttpResponseRedirect
from django.template import RequestContext
from django.contrib import auth
from models import User

import pdb

def login(request): 
 if request.method == "POST":
  uf = UserFormLogin(request.POST)
  if uf.is_valid():
   #获取表单信息
   username = uf.cleaned_data['username']
   password = uf.cleaned_data['password']   
   userResult = User.objects.filter(username=username,password=password)
   #pdb.set_trace()
   if (len(userResult)>0):
    return render_to_response('success.html',{'operation':"登录"})
   else:
    return HttpResponse("该用户不存在")
 else:
  uf = UserFormLogin()
return render_to_response("userlogin.html",{'uf':uf})
def register(request):
 curtime=time.strftime("%Y-%m-%d %H:%M:%S",time.localtime());
 if request.method == "POST":
  uf = UserForm(request.POST)
  if uf.is_valid():
   #获取表单信息
   username = uf.cleaned_data['username']
   #pdb.set_trace()
   #try:
   filterResult = User.objects.filter(username = username)
   if len(filterResult)>0:
    return render_to_response('register.html',{"errors":"用户名已存在"})
   else:
    password1 = uf.cleaned_data['password1']
    password2 = uf.cleaned_data['password2']
    errors = []
    if (password2 != password1):
     errors.append("两次输入的密码不一致!")
     return render_to_response('register.html',{'errors':errors})
     #return HttpResponse('两次输入的密码不一致!,请重新输入密码')
    password = password2
    email = uf.cleaned_data['email']
   #将表单写入数据库
    user = User.objects.create(username=username,password=password1)
    #user = User(username=username,password=password,email=email)
    user.save()
    pdb.set_trace()
   #返回注册成功页面
    return render_to_response('success.html',{'username':username,'operation':"注册"})
 else:
  uf = UserForm()
return render_to_response('register.html',{'uf':uf})
class UserForm(forms.Form):
 username = forms.CharField(label='用户名',max_length=100)
 password1 = forms.CharField(label='密码',widget=forms.PasswordInput())
 password2 = forms.CharField(label='确认密码',widget=forms.PasswordInput())
 email = forms.EmailField(label='电子邮件')
class UserFormLogin(forms.Form):
 username = forms.CharField(label='用户名',max_length=100)
 password = forms.CharField(label='密码',widget=forms.PasswordInput())

There are a total of 3 pages under the Tempaltes folder:

Register.html

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
 <title>用户注册</title>
</head>
 <style type="text/css">
 body{color:#efd;background:#453;padding:0 5em;margin:0}
 h1{padding:2em 1em;background:#675}
 h2{color:#bf8;border-top:1px dotted #fff;margin-top:2em}
 p{margin:1em 0}
 </style>
<body>
<h1>注册页面：</h1>
<form method = &#39;post&#39; enctype="multipart/form-data">
{{uf.as_p}}
{{errors}}
</br>
<input type="submit" value = "ok" />
</form>
</body>
</html>

Userlogin.html

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
 <title>用户注册</title>
</head>
 <style type="text/css">
 body{color:#efd;background:#453;padding:0 5em;margin:0}
 h1{padding:2em 1em;background:#675}
 h2{color:#bf8;border-top:1px dotted #fff;margin-top:2em}
 p{margin:1em 0}
 </style>
<body>
<h1>登录页面：</h1>
<form method = &#39;post&#39; enctype="multipart/form-data">
{{uf.as_p}}
<input type="submit" value = "ok" />
</form>
</body>
</html>

Success.html

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
 <title></title>
</head>
<body>
<form method = &#39;post&#39;>
 <h1>恭喜,{{operation}}成功！</h1>
</form>
</body>
</html>

Update database:

Run server:

Registration page:

If the registered user has not registered before, you can register successfully and click OK to enter the success interface

Log in page:

Click OK to enter the success page

This is the end of the tutorial on Django user registration and login. I hope it will be helpful to everyone!

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