seller_order.rb

  def initialize(order, seller)
    @order = order
    if seller.is_a?(User)
      @items = order.items.select("order_items.*").joins(:product).where('products.organization_id' => seller.organization_ids)
    elsif seller.is_a?(Organization)
      @items = order.items.select("order_items.*").joins(:product).where('products.organization_id' => seller.id)
    end
  end