Active Admin Permitted Params

Question

Is there a way to tell whether I am in create or edit mode from inside the permit_params block of active admin? I'd like to merge created_by and updated_by when I'd creating a new record. When I'm editing an existing record I only want to merge updated_by.

Here's my code:

ActiveAdmin.register Group do
  menu parent: "Groups", priority: 0

  permit_params do
    permitted = [:name, :description, :group_type_id, :owner_user_id]
    permitted.merge!(updated_by: current_admin_user)
    permitted
  end

I'd like to say something like:

permitted.merge!(created_by: current_admin_user) if new_record?

new_record? is an active admin method but it only seems to work in forms.

Any ideas?

Answer 1

You can merge it in the create and update action, too:

controller do
  def create
    params[:group].merge!(created_by: current_admin_user)
    create!
  end

  def update
    params[:group].merge!(updated_by: current_admin_user)
    update!
  end

end