Django中验证码captcha的使用

1. 安装命令

pip install django-simple-captcha

2. 讲captcha 在settings.py 文件中配置

INSTALLED_APPS中

INSTALLED_APPS = [
	'django.contrib.admin',
	'django.contrib.auth',
	'django.contrib.contenttypes',
	'django.contrib.sessions',
	'django.contrib.messages',
	'django.contrib.staticfiles',
	'users.apps.UsersConfig',
	'orgs.apps.OrgsConfig',
	'operations.apps.OperationsConfig',
	'courses.apps.CoursesConfig',
	'xadmin',
	'crispy_forms',
	'captcha'
]

3.将captcha配置url

urlpatterns = [
	# url(r'^admin/', admin.site.urls),
	url(r'^xadmin/', xadmin.site.urls),
	url(r'^media/(?P.*)$', serve, {"document_root": MEDIA_ROOT}),
	url(r'^captcha/', include('captcha.urls')),
	url(r'^$', index, name='index'),
	url(r'^users/', include('users.urls', namespace='users')),
	url(r'^orgs/', include('orgs.urls', namespace='orgs')),
	url(r'^courses/', include('courses.urls', namespace='courses')),
	url(r'^operations/', include('operations.urls', namespace='operations')),

]

4.迁移同步，生成captcha所依赖的表

迁移：python manage.py makemigrations

同步：python manage.py migrate

5.将captcha字段在form类中进行设置

class UserRegisterForm(forms.Form):
	email = forms.EmailField(required=True, error_messages={
		'required': '邮箱不能为空'
	})
	password = forms.CharField(max_length=20, min_length=3, required=True, error_messages={
		'max_length': '密码的最大长度是20位',
		'min_length': '密码的最小长度是3位',
		'required': '密码不能为空'
	})
	captcha = CaptchaField(error_messages={
		'invalid': '验证码错误'
	})

6.在后台逻辑中，GET请求里面实例化我们的form,将form对象返回到页面

def user_register(request):
	if request.method == 'GET':
		user_register_form = UserRegisterForm()
		return render(request, 'user/user_register.html', {
			'user_register_form': user_register_form
		})
	else:
		user_register_form = UserRegisterForm(request.POST)
		if user_register_form.is_valid():
			email = user_register_form.cleaned_data['email']
			password = user_register_form.cleaned_data['password']
			user = UserProfile.objects.filter(Q(email=email) | Q(username=email))
			if user:
				return render(request, 'user/user_register.html', {
					'msg': '用户已存在'
				})
			else:
				a = UserProfile()
				a.email = email
				a.username = email
				a.set_password(password)
				a.save()

				send_email_verify.delay(email, 'register')
				return HttpResponse('邮件已发送，请去激活')
		else:
			return render(request, 'user/user_register.html', {
				'user_register_form': user_register_form
			})

7.在页面上通过{{ form对象.captcha }}获取验证码

     验 证 码
     {{ user_register_form.captcha }}


     {{ msg }}
     {% for key,err in user_register_form.errors.item %}
         {{ err }}
     {% endfor %}