ruby on rails - Sorting on association with has_many_through relation -

i want sorted result using price.

i want result sorting order price when hotel.packages

i have 2 models(hotel , package ) has_many :through relationship. both connected each other through relationship , model name package_price

hotel model is:

 class hotel < activerecord::base       has_many :package_prices, :dependent => :destroy      has_many :packages, :through => :package_prices, :order => 'package_prices.price'   end 

package model is:

class package < activerecord::base     has_many :package_prices, :dependent => :destroy #foreign key package_id     has_many :hotels, :through => :package_prices, :order => 'package_prices.price' end 

package_price model is:

class packageprice < activerecord::base   belongs_to :package   belongs_to :hotel end 

package_prices table fields:

+------------+--------------+------+-----+---------+----------------+ | field      | type         | null | key | default |          | +------------+--------------+------+-----+---------+----------------+ | id         | int(11)      | no   | pri | null    | auto_increment | | package_id | int(11)      | yes  |     | null    |                | | price      | int(11)      | yes  |     | null    |                | | hotel_id   | varchar(255) | yes  |     | null    |                | | created_at | datetime     | no   |     | null    |                | | updated_at | datetime     | no   |     | null    |                | +------------+--------------+------+-----+---------+----------------+ 

i want packages of hotel sorted price.