在rails查询中获取符号@ new_record，false，@ readonly

Question

如何避免来自rails query的此类符号@new_record，false，@readonly

我的哈希结果显示为

[#<Hotel id: 42, hotel_name: "Vijay: Resort De Alturas,Candolim", stars: "4", location: "North Goa", created_at: "2013-09-21 20:05:25", updated_at: "2013-09-21 20:05:25", searchable: true>, :@readonly, false]

并且当相同的查询再次触发时，它第一次工作正常，但从第二次获得不同类型的符号，如@new_record，false，@readonly

我的查询是

    @hotels = Hotel.sort_hotel_by_price(session["search"],price_type)

def self.sort_hotel_by_price(hotels,price_sort_type=nil)
   pkg_prices_in_sort_order=[]
  # hotels.reject!{|h| h.to_s.chr=="@" or h==false}
   pkg_prices_in_sort_order << (hotels.map{|hotel| hotel.package_prices.order("price ASC").first})

   pkg_prices_in_sort_order.flatten!
   pkg_prices_in_sort_order.reject!{|pkg_price| pkg_price.nil?}
   pkg_prices_in_sort_order = pkg_prices_in_sort_order.sort{|x,y| x["price"]<=>y["price"]}
   if (price_sort_type=="high")
     pkg_prices_in_sort_order.reverse!
   end
   sort_hotels=[]
   sort_hotels << (pkg_prices_in_sort_order.map{|s| s.hotel})
   sort_hotels.flatten!
  end