ruby-on-rails - 带有自定义处理器的 CarrierWave 未注册

Question

我正在使用 carrierwave上传视频然后有一个名为 thumb 的版本，带有自定义处理器，可以获取视频并使用 streamio-ffmpeg 创建屏幕截图。视频和文件都已正确上传，但在调用 uploader.url(:thumb) 时我得到:

ArgumentError: Version thumb doesn't exist!

VideoUploader.rb

require 'carrierwave/processing/mime_types'
require 'streamio-ffmpeg'

class VideoUploader < CarrierWave::Uploader::Base
    include CarrierWave::VideoConverter
    include CarrierWave::MimeTypes

    process :set_content_type

    storage :file

    version :thumb do
            process :create_thumb

            #def full_filename(for_file)
            #        "thumb_#{File.basename(for_file, File.extname(for_file))}.png"
            #end
    end

    def create_thumb
            cached_stored_file! if !cached?

            movie = FFMPEG::Movie.new(current_path)

            dirname = File.dirname(current_path)

            thumb_path = "#{File.join(dirname, File.basename(path, File.extname(path)))}.png"

            movie.screenshot(thumb_path, :seek_time => 5)
            File.rename thumb_path, current_path
    end

    def file_identifier
            model[:video]
    end

    # Override the directory where uploaded files will be stored.
    # This is a sensible default for uploaders that are meant to be mounted:
    def store_dir
            return "uploads/#{model.class.to_s.underscore}/#{mounted_as}/#{model.user_id}/#{model.id}"
    end
end

然后 model.video_url(:thumb) 返回参数错误。我不确定该怎么做或为什么版本未注册任何帮助都很好，谢谢。

Answer 1

修复

导致错误的原因是重启服务器而不是重启 Rails 控制台。一旦我这样做了，参数错误就消失了，但我走错了路。所以我取消评论

        def full_filename(for_file)
                "thumb_#{File.basename(for_file, File.extname(for_file))}.png"
        end

和使用

[model].video.recreate_versions!

更正路径或命名方案中可能发生的任何错误