Code reuse in the Rails Admin DSL

rails_admin_dsl.rb

class Foo < ActiveRecord::Base
  
  def self.fields(something = false)
    -> (model) {
      field :bar
      field :baz
      field :woof
      
      if something
        field :something_else
      end
    }
  end
  
  rails_admin do
    create &Foo.fields
    edit   &Foo.fields(something = true)
  end
  
end