重命名回形针现有附件

Question

我的Ruby on Rails应用程序中有以下模型，它使用paperclip进行上传：

class SlideAudio < ApplicationRecord
  # == Extensions ============================================================
  Paperclip.interpolates :locale do |attachment, style|
    attachment.instance.locale
  end

  has_attached_file :audio,
    path: ":rails_root/public/slides/:attachment/:style/:locale/:id.:extension",
    url: "/slides/:attachment/:style/:locale/:id.:extension",
    processors: [:audio_compression],
    styles: {
      original: {},
      compressed_96k: {bitrate: '96k'}
    }
  # == Associations ==========================================================
  has_many :slide_slide_audios
  has_many :slides, through: :slide_slide_audios

  # == Validations ===========================================================
  validates_attachment :audio, content_type: {
    content_type: [
      'audio/mpeg',
      'audio/x-mpeg',
      'audio/mp3',
      'audio/x-mp3',
      'audio/mpeg3',
      'audio/x-mpeg3',
      'audio/mpg',
      'audio/x-mpg',
      'audio/x-mpegaudio'
    ]
  }
end

上传一个音频后，我有两个文件：

1. public/slides/audios/original/en/30381.mp3
2. public/slides/audios/compressed_96k/en/30381.mp3

不，我想将所有这些文件名更新为18695.mp3。我怎么能这样做？