Ruby on Rails - 在 simple_form gem 中添加人类安全字段？

Question

我目前在 Ruby on Rails 中使用 simple_form gem 创建了一个表单，但我想添加一种“什么是 1+1？”问题和输入字段作为最后一个问题，以消除机器人等风险。我如何将此功能添加到我的表单中？

我的表单包含以下内容：

<%= simple_form_for @job, html: { multipart: true } do |form| %>
  <h2>Job Position:</h2>
    <%= form.input :position, input_html: { maxlength: 60 }, placeholder: "Job Position", label: false %>
    <%= form.input :company, input_html: { maxlength: 60 }, placeholder: "Company name", label: false %>
    <%= form.input :salary, input_html: { maxlength: 60 }, placeholder: "Salary", label: false %>
    <%= form.input :contract, input_html: { maxlength: 60 }, placeholder: "Contract Type", label: false, collection: ['full time', 'part time', 'internship'], prompt: "Contract Type" %>
    <%= form.input :city, input_html: { maxlength: 60 }, placeholder: "City", label: false %>
    <%= form.input :expirydate, input_html: { maxlength: 60 }, placeholder: "Expiry date", label: false %>
    <%= form.input :description, input_html: { maxlength: 60 }, placeholder: "Full job description", label: false %>
    <%= form.input :apply, input_html: { maxlength: 60 }, placeholder: "How to apply", label: false %>
    <h2>Your Contact Details:</h2>
    <%= form.input :contactname, input_html: { maxlength: 60 }, placeholder: "Contact Name", label: false %>
    <%= form.input :contactemail, input_html: { maxlength: 60 }, placeholder: "Contact Email", label: false %>
    <%= form.input :contactphone, input_html: { maxlength: 60 }, placeholder: "Contact Telephone", label: false %>
    <%= form.button :submit %>
<% end %>

Answer 1

您可以像这样向模型添加验证：

class Job < ActiveRecord::Base
  attr_accessor :human_sum 
  validate :not_a_bot

  private

  def not_a_bot
    if human_sum.to_i != 2 
      errors.add(:human_sum, 'Get out, you bot!') 
    end
  end
end

然后以你的形式：

<%= simple_form_for @job, html: { multipart: true } do |form| %>   
  ...
  <%= form.input :human_sum, label: 'What is 1+1?'
<% end %> 

不要忘记将:human_sum 添加到控制器中允许的参数中。