Ruby-on-rails Rails：activeadmin 覆盖创建操作

Rails: activeadmin overriding create action

提问by patrickdavey

I have an activeadmin resource which has a belongs_to :user relationship.

我有一个 activeadmin 资源，它有一个belongs_to :user 关系。

When I create a new Instance of the model in active admin, I want to associate the currently logged in user as the user who created the instance (pretty standard stuff I'd imagine).

当我在活动管理员中创建模型的新实例时，我想将当前登录的用户与创建实例的用户相关联（我想象的非常标准的东西）。

So... I got it working with:

所以......我得到了它的工作：

controller do
  def create
    @item = Item.new(params[:item])
    @item.user = current_curator
    super
  end 
end 

However ;) I'm just wondering how this works? I just hoped that assigning the @item variable the user and then calling super would work (and it does). I also started looking through the gem but couldn't see how it was actually working.

但是 ;) 我只是想知道这是如何工作的？我只是希望将 @item 变量分配给用户然后调用 super 会起作用（确实如此）。我也开始查看 gem，但看不到它的实际工作原理。

Any pointers would be great. I'm assuming this is something that InheritedResources gives you?

任何指针都会很棒。我假设这是 InheritedResources 给你的东西？

Thanks!

谢谢！

回答by Karl Wilbur

I ran into a similar situation where I didn't really need to completely override the create method. I really only wanted to inject properties before save, and only on create; very similar to your example. After reading through the ActiveAdmin source, I determined that I could use before_createto do what I needed:

我遇到了类似的情况，我真的不需要完全覆盖 create 方法。我真的只想在保存之前注入属性，并且只在创建时注入；与您的示例非常相似。在阅读了 ActiveAdmin 源代码后，我确定我可以before_create用来做我需要的事情：

ActiveAdmin.register Product do
  before_create do |product|
    product.creator = current_user
  end
end

回答by Kori John Roys

Another option:

另外一个选项：

def create
  params[:item].merge!({ user_id: current_curator.id })
  create!
end

回答by zolter

You are right active admin use InheritedResources, all other tools you can see on the end of the page.

您是管理员使用权限InheritedResources，您可以在页面末尾看到所有其他工具。

回答by justinsAccount

As per the AA source codethis worked for me:

根据 AA源代码，这对我有用：

controller do
  def call_before_create(offer)
  end
end