不同版本有不同的文件扩展名

发布于 2024-10-21 21:24:45 字数 640 浏览 1 评论 0原文

我正在使用 Carrierwave 上传图像。我需要我的主图像版本保留其原始格式，但要转换其他版本到 gif。

目前我正在做这样的事情：

 def filename
   change_ext_to_gif(super)
 end

 def change_ext_to_gif(ext)
   ext.chomp(File.extname(ext)) + ".gif"
 end

 version :preview do
   process :resize_to_fill => [60, 60]
   process :convert => "gif"
 end

 version :full do
   process :resize_to_limit => [320, 320]
   process :convert => "gif"
 end

 version :mobile do
   process :resize_to_limit => [72, 96]
   process :convert => "gif"
 end

当然，这也会更改我的原始文件的扩展名。是有什么办法解决这个问题吗？我想我需要重写一些方法在版本的块中。但我无法弄清楚它们（我尝试覆盖文件名和网址，这有帮助，但会阻止版本文件被删除）。

原文

I am using carrierwave to upload images. I need my main image version
to remain in its original format, but other versions to be converted
to gif.

At the moment i am doing something like this:

 def filename
   change_ext_to_gif(super)
 end

 def change_ext_to_gif(ext)
   ext.chomp(File.extname(ext)) + ".gif"
 end

 version :preview do
   process :resize_to_fill => [60, 60]
   process :convert => "gif"
 end

 version :full do
   process :resize_to_limit => [320, 320]
   process :convert => "gif"
 end

 version :mobile do
   process :resize_to_limit => [72, 96]
   process :convert => "gif"
 end

Of course, this changes extension of my original file as well. Is
there any way to solve this? I guess i need to override some methods
in the version's blocks. But i was not able to figure out them (I
tried overriding filename and url this helps but prevents version`s
files from being deleted).

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不念旧人 2024-10-28 21:24:45

您可以像这样修改每个版本使用的文件名：

 version :mobile do
   process :resize_to_limit => [72, 96]
   process :convert => "gif"
   def full_filename(for_file = model.logo.file)
     "fiename here"
   end
 end

因此，只需保留原始文件名，然后按版本更改它即可。维基百科上还有更多示例：

https://github.com/jnicklas/rierwave/wiki/How-To%3A-Move-version-name-to-end-of-filename%2C-instead-of-front

You can ovvierde the filename that gets used per version like so:

 version :mobile do
   process :resize_to_limit => [72, 96]
   process :convert => "gif"
   def full_filename(for_file = model.logo.file)
     "fiename here"
   end
 end

So just leave the original filename as you'd like and then alter it per version. There are further examples on the wiki here:

https://github.com/jnicklas/carrierwave/wiki/How-To%3A-Move-version-name-to-end-of-filename%2C-instead-of-front

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