class ProductsController < ApplicationController
  administrate_me do |a|
    f.combo :brand_id do
      Brand.all.map{|b| [b.name, b.id]}
    end
    # In case you have the to_select plugin installed you can do this
    f.combo :category_id do
      Category.to_select
    end
    # Also using a simple list of values
    f.combo :state do
      ['active', 'deleted']
    end
  end