display_stockists_controller.rb

def index
    @stockist_countries = StockistCountry.active_stockists
end

index.html.erb

<% @stockist_countries.each do |country| %>
    <div class="individual-stockist">
        <%= content_tag(:h2, country.name) %>

        <% country.stockists.each do |stockist| %>
            <%= "Position: #{stockist.position}" %><br />
            <%= stockist.name %><br />
            <%= link_to(stockist.url, stockist.url) %>
        <% end %>
    </div>
<% end %>

stockist.rb

belongs_to :stockist_country
 
  acts_as_list :scope => :stockist_country

stockist_country.rb

attr_accessible :name, :position, :active

  has_many :stockists, :dependent => :destroy
  acts_as_list

  def self.active
    where(:'countries.active' => true)
  end
 
  def self.order_by_position
    order('countries.position')
  end

  def self.active_stockists
    active.order_by_position.includes(:stockists).where('stockists.active' => true).order('stockists_country.position, stockists.position')
  end