CarrierWave的混合文件类型 [英] Mixed file types with CarrierWave

问题描述

我有一个CarrierWave上传器，可以接受各种文件类型。有些是图像类型（例如jpg，png），有些则不是。

I've a CarrierWave uploader that shall accept a variety of file types. Some are image types (e.g. jpg, png) others are not.

我想用

version :medium do
  process :resize_to_fit => [300, 300]
end

因为这只适用于图像文件，我该怎么办？区分图像和其他类型并省略非图像文件的大小调整？

As this only works for image files, how can I distinguish between images and other types and omit the resizing for non-image files?

目前CarrierWave尝试处理文件，无论其类型如何导致MiniMagick处理如果文件不是图像则出错。

At the moment CarrierWave tries to process the file regardless of it's type which leads to a MiniMagick processing error if the file is not an image.

推荐答案

根据 Carrierwave Docs 您可以进行条件处理：

According to the Carrierwave Docs you can do the conditional processing:

version :medium, :if => :image? do
  process :resize_to_fit => [300, 300]
end

protected

def image?(new_file)
  new_file.content_type.include? 'image'
end

实际上我发现更完整的答案其他

Actually more full answer I found here

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