ruby-on-rails - rails 3 : How to get image path in Controller?

Question

要在 Controller 中获取图像路径，我使用以下方法:

class AssetsController < ApplicationController
  def download(image_file_name)
    path = Rails.root.join("public", "images", image_file_name).to_s
    send_file(path, ...)
  end
end

有没有更好的方法来找到路径？

Answer 1

ActionController::Base.helpers.asset_path('missing_file.jpg')

Access Asset Path from Rails Controller