发送验证码 禁止重复绑定 后端不传notice 前端alert

<script>
  var count=60,timer=null;
  jQuery("#send_validation_code").click(function() {
    let email = jQuery('#email').val();
    if(email==''){
      alert('邮箱不能为空')
    }else{
      let url =  '/front_ends/send_validation_code?type=email&to=' + email +'&account_id=<%= current_account.id %>'
      jQuery.get(url , function(data){
        console.info(data)
          if(data.result == 'ok'){
            if(timer==null){
              timer=setInterval(function(){count--;$("#send_validation_code").text(count+"s");
                if(count<=0){clearInterval(timer);$("#send_validation_code").text("获取验证码");timer=null;}},1000);
            }
          }else{
            alert('该邮箱已经存在,无法被绑定，请确认邮箱是否正确')
          }
      })
    }
  });

  def send_validation_code
    type = params[:type]
    to = params[:to]
    code = ((0..9).to_a + (0..9).to_a).shuffle[0,4].join
    subject = "您的验证码是#{code}"
    if Account.where('email = ? or mobile = ?', to, to).blank?

      if type == 'mobile'
        YunPianJob.perform_now to, code
      else
        UserMailer.send_validation_email(to, code, subject).deliver_now
      end

      if current_account.present?
        ValidationCode.create code_type: type, code: code, valid_through: (Time.now + 15 * 60), account_id: current_account.id, receive: to, is_used: false
      else
        ValidationCode.create code_type: type, code: code, valid_through: (Time.now + 15 * 60), receive: to, is_used: false
      end

      render json: {
        result: 'ok',
        to: to,
        code: code
      }   
    else
      render json: {
        result: 'error'
      }   
    end
  end