Move acts_as_attachment / attachment_fu images

mloughran () — Tue, 06 May 2008 14:39:05 GMT

Use this to move files from the old directory structure (before 0000 format) to new one



Dir.new(File.dirname($PROGRAM_NAME)).each do |f|

  next if f == '0000' || f == 'move.rb' || f == '..' || f == '.'

  

  new_name = sprintf("%04d", f.to_i)

  

  puts "Moving #{f} to #{new_name}"

  puts `mv #{f} 0000/#{name}`

end

Make a remote URL work like a file upload (in Rails)

seancribbs (Sean Cribbs) — Fri, 11 May 2007 18:04:51 GMT

Want to load a remote URL into an acts_as_attachment/attachment_fu model? Use this little utility class.



  class UrlUpload

    EXTENSIONS = {

      "image/jpeg" => ["jpg", "jpeg", "jpe"],

      "image/gif" => ["gif"],

      "image/png" => ["png"]

    }

    attr_reader :original_filename, :attachment_data

    def initialize(url)

      @attachment_data = open(url)

      @original_filename = determine_filename

    end



    # Pass things like size, content_type, path on to the downloaded file

    def method_missing(symbol, *args)

      if self.attachment_data.respond_to? symbol

        self.attachment_data.send symbol, *args

      else

        super

      end

    end

    

    private

      def determine_filename

        # Grab the path - even though it could be a script and not an actual file

        path = self.attachment_data.base_uri.path

        # Get the filename from the path, make it lowercase to handle those

        # crazy Win32 servers with all-caps extensions

        filename = File.basename(path).downcase

        # If the file extension doesn't match the content type, add it to the end, changing any existing .'s to _

        filename = [filename.gsub(/\./, "_"), EXTENSIONS[self.content_type].first].join(".") unless EXTENSIONS[self.content_type].any? {|ext| filename.ends_with?("." + ext) }

        # Return the result

        filename

      end

  end

Now when you have the URL you want to load, do something like this:



@model.uploaded_data = UrlUpload.new(url)

Or better yet, make a pseudo-accessor on your aaa/attachment_fu model so you can stay "model-heavy".



def url=(value)

  self.uploaded_data = UrlUpload.new(value)

end

DZone Snippets: attachment_fu code

Move acts_as_attachment / attachment_fu images

Make a remote URL work like a file upload (in Rails)