rails添加验证码

1.安装包

gem 'rucaptcha'
gem 'dalli'

2.配置路由

mount RuCaptcha::Engine => "/rucaptcha"

3 controller部分

def create
    @user = User.new(user_params)
    if  verify_rucaptcha?(@user)&&@user.save
    ......

4.view部分

 <div class="form-group ">
    <%= rucaptcha_input_tag( placeholder: '输入验证码') %>
    <%= rucaptcha_image_tag(class:'image-box', alt: 'Captcha') %>
</div>

5 . 实现点击图片刷新验证码

<script type="text/javascript">
    $(".image-box").click(function(){
        var src=$(".image-box").attr("src");
        $(".image-box").attr("src",src.split("?")[0]+"?"+(new Date().getTime()))
    })
</script>