回形针锐化处理器导致调整大小样式不起作用 [英] Paperclip sharpening processor causes resizing styles not to work

问题描述

我正在尝试锐化通过回形针上传的图像.锐化代码正在工作，但它导致样式不起作用.代码是这样的:

I'm trying to sharpen images uploaded through paperclip. The sharpen code is working but it causes the styles to not work. The code is like this:

 has_attached_file :photo,
    :styles => {
                :thumb => {:geometry => "100x100>"},
                :medium => {:geometry => "300x300>"},
                :original => {:geometry => "1024x1024>"}
                },
    :processors => [:sharpen],
    :storage => :s3,
    :s3_credentials => "#{Rails.root}/config/s3.yml",
    :path => "/:style/:id/:filename"

现在，如果我删除处理器选项，上传的图像将按指定大小调整.但是，如果我包含处理器选项，则所有生成的图像都是原始大小.

Now if I remove the processors option, the uploaded images are resized as specified. However if I include the processors option, all the resulting images are of original size.

我的锐化处理器如下所示:

My sharpen processor looks like this:

module Paperclip
  class Sharpen < Paperclip::Processor
    def initialize file, options = {}, attachment = nil
      super
      @file = file
      @current_format = File.extname(@file.path)
      @basename = File.basename(@file.path, @current_format)
    end

    def make
      dst = Tempfile.new(@basename)
      dst.binmode

      command = "#{File.expand_path(@file.path)} -unsharp 1.5×1.0+1.5+0.02 #{File.expand_path(dst.path)}"

      begin
        success = Paperclip.run("convert", command)
      rescue PaperclipCommandLineError
        raise PaperclipError, "There was an error converting sharpening the image for #{@basename}"
      end

      dst
    end
  end
end

有什么想法吗?

推荐答案

尝试将 :thumbnail 添加到处理器列表:

Try adding :thumbnail to processors list:

:processors => [:thumbnail, :sharpen]

默认情况下 :thumbnail 存在，但现在您要覆盖该设置.

By default :thumbnail is there but now you are overriding that setting.

"可以指定多个处理器，它们将按照它们在 :processors 数组中定义的顺序被调用.每个连续的处理器将被赋予前一个处理器的执行结果.所有处理器将收到相同的参数，即是您在 :styles 哈希中定义的内容."

"Multiple processors can be specified, and they will be invoked in the order they are defined in the :processors array. Each successive processor will be given the result of the previous processor's execution. All processors will receive the same parameters, which are what you define in the :styles hash."

• https://github.com/thoughtbot/paperclip

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