對于房間預訂，我想包括房間選項。選項及其連接表reservation_options 似乎正確插入到我的參數中，但我無法正確分配連接表的option_quantity 值。它給了我錯誤消息```沒有將符號隱式轉換為整數``由于選項是在表單中動態生成的，因為它們取決于所選的 room_type，因此我嘗試在創建操作中構建它們。但是，我無法遍歷參數并構建它們（請參閱為我的嘗試創建操作）。參數 Parameters: {"utf8"=>"?", "authenticity_token"=>"7QJHgdYW8ubKiNpLPET7tYzGNyqmp69dafo8NDaAUBf2PL3CI9XhKmd/am2Mo/A93EFZQByltwe2e4wepMXdqw==", "reservation"=>{"rooms"=>{"room_type"=>"185"}, "arrival"=>"2019-10-25", "departure"=>"2019-10-26", "room_id"=>"266", "reservation_contact_attributes"=>{"first_name"=>"John", "last_name"=>"Doe", "street"=>"street", "street_number"=>"", "zipcode"=>"4049", "city"=>"Gent", "country"=>"", "email"=>"[email protected]", "phone"=>""}, "payment"=>"not paid"}, "reservation_options_attributes"=>[{"option_id"=>"109", "option_quantity"=>"1"}, {"option_id"=>"110", "option_quantity"=>"1"}], "commit"=>"Save & proceed to additional options", "hotel_id"=>"109"}楷模class Reservation < ApplicationRecord  has_many :reservation_options, dependent: :destroy  has_many :options, through: :reservation_options  accepts_nested_attributes_for :reservation_optionsendclass ReservationOption < ApplicationRecord  belongs_to :option  belongs_to :reservation  accepts_nested_attributes_for :optionendclass Option < ApplicationRecord  belongs_to :room_type  has_many :reservation_options, dependent: :destroy  has_many :reservations, through: :reservation_options  validates :name, presence: trueend保留選項的輸出 1=> <ActionController::Parameters {"option_id"=>"110", "option_quantity"=>"1"} permitted: false>保留選項的輸出 2=> #<ActiveRecord::AssociationRelation [#<ReservationOption id: 62, option_id: 110, reservation_id: 142, option_quantity: nil, created_at: "2019-10-25 12:27:45", updated_at: "2019-10-25 12:27:45">]>