python - Django - 实现在 3 次登录尝试失败时显示 CAPTCHA

Question

我正在使用 Django 注册包。我已经成功实现了 Django-reCAPTCHA 包。每次登录时都会出现验证码。

现在我希望验证码仅在 3 次登录尝试失败后才出现。我怎样才能实现它？

感谢任何帮助。谢谢。

Answer 1

首先将 session 中登录尝试失败的次数存储在登录 View 中: 使用此站点在 django 中实现 reCaptcha https://simpleisbetterthancomplex.com/tutorial/2017/02/21/how-to-add-recaptcha-to-django-site.html View .py

class UserLoginFormView(FormView):
   form_class = LoginForm
   success_url =  reverse_lazy('appuser:test')
   template_name = "appuser/login.html"

   def dispatch(self, request, *args, **kwargs):
       if ('lReq' in self.request.session):
          request.session['lReq'] +=1
       else:
          request.session['lReq'] = 1

      return super(UserLoginFormView,self).dispatch(request, *args, **kwargs)

在表单有效时根据 session 值做出决定

def form_valid(self,form):
     if( self.request.session['lReq'] > 3):
      ..... your code to validate the captcha you will find in the site above... 

def render_to_response(self, context, **response_kwargs):
    if( self.request.session['lReq'] > 3):
       context['cap'] = True
    else:
       context['cap'] = False

    return super( UserLoginFormView,self).render_to_response(context,**response_kwargs)

在您的模板中

    {% block content %}
  <form method="post">
    {% csrf_token %}
    {{ form.as_p }}
 {%if cap%}
<script src='https://www.google.com/recaptcha/api.js'></script>
<div class="g-recaptcha" data-sitekey="6LdRSRYUAAAAAFCqQ1aZnYfRGJIlAUMX3qkUWlcF"></div>
{%endif%}
<button type="submit" class="btn btn-primary">Post</button>

 {% endblock %}

这应该有效