S3上的Paperclip正在从URL更改文件扩展名

Question

我写了一个rake任务,从wikipedia下载了一个名人的名字,但出于某种原因,当存储在S3上时,文件扩展名被删除或更改为.txt

否则该文件是正确的.

有任何想法吗？

从我的名人模特:

has_attached_file :pic, 
  :styles => { :medium => "300x300>", :thumb => "100x100>" },
  :default_style => :medium,
  :storage => :s3,
  :s3_credentials => "#{Rails.root}/config/s3.yml",
  :path => "/:style/:img_name.:extension"

从我的佣金任务:

desc "Update celeb pics from wiki"
task :update_celeb_pics => [:environment] do
  include ApplicationHelper
  Celeb.all.each do |celeb|
    if !celeb.name.start_with?("(")
      puts celeb.name
      celeb.pic = open(getImage(celeb.name))
      celeb.save
    end
  end
end

getImage方法是一个返回字符串的帮助器

    require 'open-uri'
    require 'uri'

    module ApplicationHelper
      def getInfo(name)
        Nokogiri::XML(open(URI.escape("http://en.wikipedia.org/w/api.php?action=opensearch&search=#{name}&limit=1&namespace=0&format=xml")))
      end

      def nokoPage(name)
        Nokogiri::XML(open(getURL(name)))
      end

      def getImage(name)
        "http:" + nokoPage(name).css("table img")[0].attribute("src").value if !nokoPage(name).css("table img").empty?
      end

      def getDescription(name)
        getInfo(name).css("Description").text
      end

      def getURL(name)
        getInfo(name).css("Url").text
      end

      def getBday(name)
        bday = nokoPage(name).css("span.bday")
        return Date.parse(bday[0].text) if !bday.empty?
        return Date.today
      end

      def getDday(name)
        dday = nokoPage(name).css("span.dday")
        return Date.parse(dday[0].text) if !dday.empty?
      end

    end

Answer 1

这是因为

self.pic = open("http://something.com/bla/image.png")

这不是最好的解决方案.就在昨天,我将一个Pull Request合并到Paperclip中,让你这样做

self.pic = URI.parse(getImage(name))

这将确保您的pic的内容类型与下载的文件匹配,pic的文件名设置为下载的文件的名称.

你获得txt扩展的原因是因为open返回一个StringIO对象,该对象实际上将文件名命名为"stringio.txt".您的文件名可能由s3代码更改,但扩展名仍为".txt"

我建议你将你的Gemfile链接到paperclip的github repo,运行bundle再试一次.

干杯,Aditya