如何调整已限制已经保存的img？

Question

我使用CarrierwaveUploader上传了图片，我想resize_to_limit所以我在Carrierwave中启用了RMagick。

class Word < ActiveRecord::Base
  ...
  mount_uploader :image, ImageUploader
end

class ImageUploader < CarrierWave::Uploader::Base

    include CarrierWave::RMagick
    storage :file

    def store_dir
      ...
    end

    def filename
      ...
    end

    version :thumb do
      process :resize_to_limit => [400, 400]
    end
end

新上传的图片为resized-to-limit，但我不知道如何为已保存的图片应用resize-to-limit。

Answer 1

看起来你想要recreate_versions!命令

https://github.com/carrierwaveuploader/carrierwave#recreating-versions