Ruby On Rails 5中Active Admin中的验证错误

Question

I am trying to add validation in Active Admin model, and doing it as follow: 我正在尝试在Active Admin模型中添加验证，并按照以下步骤进行操作：

ActiveAdmin.register Skill do

  permit_params :title, :text, :status
  validates :title, length: { maximum: 20 }, presence: true

end

and it gives following error: 它给出了以下错误：

undefined method `validates' for # ActiveAdmin::ResourceDSL:0x007f576cab00c0 ＃ActiveAdmin :: ResourceDSL：0x007f576cab00c0的未定义方法`validates'

When I use same thing on frontend model then it works fine, don't know what's going on. 当我在前端模型上使用相同的东西时，它可以正常工作，不知道发生了什么。

Answer 1

Try to add validation in the Active record model instead in the active admin. 尝试在活动记录模型中而不是在活动管理员中添加验证。

Add 加

validates :title, length: { maximum: 20 }, presence: true

in the Skill model 在Skill模型中