Rails：activeadmin重写创建操作

Question

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

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).

So... I got it working with:

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.

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

Thanks!

Answer 1

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_create to do what I needed:

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

Answer 2

Another option:

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

Answer 3

你是对的主动管理员使用InheritedResources ，你可以在页面的末尾看到所有其他工具。

Answer 4

As per the AA source code this worked for me:

controller do
  def call_before_create(offer)
  end
end