django验证码

1：安装 pip install django-simple-captcha 

2：在setting.py中加入    'captcha'

3：在urls.py中加入    url(r'^captcha/', include('captcha.urls')),

4:在views.py

   def login(request):
'''
用户登录
'''
form = LoginForm(request.POST)
if request.method == 'POST':
if form.is_valid():
human = True
name = Register.objects.filter(name__exact=form.cleaned_data["name"])
password = Register.objects.filter(password__exact=form.cleaned_data["password"])
if name and password:
request.session['name']=name
name = request.session.get('name', None)
return HttpResponseRedirect('/user/')
else:
return HttpResponse('用户名不存在或密码错误！！！');
else:
return render_to_response('login/login.html', locals(), context_instance=RequestContext(request))
if request.GET.get('newsn')=='1':
csn=CaptchaStore.generate_key()
cimageurl= captcha_image_url(csn)
return HttpResponse(cimageurl)
elif request.method == 'GET':
form = LoginForm(request.GET)
return render_to_response('login/login.html', locals(), context_instance=RequestContext(request))
return HttpResponseRedirect("/login/")

红色部分，绿色部分应该注意:

html：

<div class="control-group">
<label class="control-label" for="inputphone">验证码：</label>
<div class="controls">
{{form.captcha}}
<br>
<button id='js-captcha-refresh' type="button">刷新验证码</button>
<script>
$('#js-captcha-refresh').click(function(){
$.get("?newsn=1", function(result){
$('.captcha').attr("src",result);
$('#id_captcha_0').attr("value",result.split('/')[3]);
});
return false;
});
</script>
<span style="color:red;"> {{form.captcha.errors}}</span>
</div>  </div>