在单独的表单字段中包含连接模型中的属性

Question

我有一个关联设置，其中Track可以属于多个Releases到ReleaseTracks：

class Release < ApplicationRecord
  has_many :release_tracks, dependent: :destroy
  has_many :tracks, through: :release_tracks
end

class ReleaseTrack < ApplicationRecord
  # disc, side, number
  belongs_to :release
  belongs_to :track

  belongs_to :album
end

class Track < ApplicationRecord
  has_many :release_tracks, dependent: :destroy
  has_many :releases, through: :release_tracks

  validates_uniqueness_of :name, scope: [:release_id, :album_id]
end

如您所见，ReleaseTrack有三个属性disc, side, number，可以正确识别任何特定版本的曲目的正确位置。我想知道在发布表单中创建新曲目的例子，我怎么能保存这三个属性呢？