Verification Code function

CAPTCHA function 1. Installing the CAPTCHA Plugin

(Dj_login) D:\dj\dj_login>pip Install django-simple-captchacollecting django-simple-captcha Using cached https:// files.pythonhosted.org/packages/d7/f4/ea95b04ed3abc7bf225716f17e35c5a185f6100db4d7541a46696ce40351/ Django-simple-captcha-0.5.9.ziprequirement already satisfied:six>=1.2.0 in E:\venv\dj_login\lib\site-packages ( From Django-simple-captcha) (1.11.0) requirement already satisfied:django>=1.8 in e:\venv\dj_login\lib\  Site-packages (from Django-simple-captcha) (1.11.12) collecting pillow!=5.1.0,>=2.2.2 (from Django-simple-captcha) Using Cached https://files.pythonhosted.org/packages/1b/50/ 869910cd7110157fbefd0fed3db3656c1951f1bceecdd00e3716aa269609/pillow-5.2.0-cp36-cp36m-win_amd64.whlcollecting django-ranged-response==0.2.0 (from Django-simple-captcha) Using cached https://files.pythonhosted.org/packages/70/ E3/9372fcdca8e9c3205e7979528ccd1a14354a9a24d38efff11c1846ff8bf1/django-ranged-response-0.2.0.tar.gzrequirement Already Satisfied:pytz in E:\venv\dj_login\lib\sitE-packages (from Django>=1.8->django-simple-captcha) (2018.5) installing collected Packages:pillow, Django-ranged-response, Django-simple-captcha Running setup.py install for django-ranged-response ... done Running setup . py Install for Django-simple-captcha ... donesuccessfully installed Pillow-5.2.0 django-ranged-response-0.2.0 django-simple-captcha-0.5.9

2. Register CAPTCHA and create a table

INSTALLED_APPS = [    'django.contrib.admin',    'django.contrib.auth',    'django.contrib.contenttypes',    'django.contrib.sessions',    'django.contrib.messages',    'django.contrib.staticfiles',    'app_login',    'xadmin',    'crispy_forms',    'captcha'](dj_login) D:\dj\dj_login>python manage.py migrateOperations to perform:  Apply all migrations: admin, app_login, auth, captcha, contenttypes, sessions, xadminRunning migrations:  Applying captcha.0001_initial... OK

3. Add a route

from django.conf.urls import urlfrom django.conf.urls import includeimport xadminurlpatterns = [    # path('admin/', admin.site.urls),    url('xadmin/',xadmin.site.urls),    url(r'',include('app_login.urls')),    url(r'^captcha',include('captcha.urls'))]

4. Modify the forms.py form

from django import forms   #导入forms模块from captcha.fields import CaptchaField   #导入验证码功能模块class UserForm(forms.Form):   #所有表单类都需要继承forms.Form    '''定义form子标签<input>子元素的name属性变量，这里定义的是name=username和name=password的变量label就是label标签，max_length为设置该变量可以输入的最大字符widget为设置input的类型，这里的passwordinput为type='password',添加属性使用attrs={}以字典键值对的形式，这里增加了class和placeholder属性'''    username=forms.CharField(label='用户名',max_length=128,widget=forms.TextInput(attrs={'class':'form-control','placeholder':'用户名'}))    password=forms.CharField(label='密码',max_length=512,widget=forms.PasswordInput(attrs={'class':'form-control','placeholder':'密码'}))    captcha=CaptchaField(label='验证码')   #添加验证码表单字段

5. Modify the login.html file

{% extends ' base.html '%} <!--inherit base page template content, can browse Web page view effect-->{% load staticfiles%} <!--load static method for loading files in static--&gt ; {% block title%} login {% Endblock%} <!--set title, default using-->{% block CSS%}<link href= "{% static" Css/login.cs in base template S '%} "rel=" stylesheet "/>{% endblock%} <!--use a custom CSS landing style without-->{% block content% in base} <!--the template language is used to define the body content, Combined with templates--<div class= "container" > <div class= "col-md-4 col-md-offset-4" > <form CLA                  ss= ' Form-login ' action= "/login/" method= "POST" > {% if message%} <!--like if statement-- <div class= "alert alert-warning" >{{message}}</div> <!--use bootstrap alert to pass message message--{% endif%} {% Csrf_token%}