Read asciicast directly from URL

app/models/asciicast.rb

@@ -80,8 +80,7 @@ class Asciicast < ActiveRecord::Base
       Stdout::MultiFile.new(stdout_data.decompressed_path,
                             stdout_timing.decompressed_path)
     else
-      file.cache!
-      Stdout::SingleFile.new(file.current_path)
+      Stdout::SingleFile.new(file.url)
     end
   end
 

app/models/stdout.rb

@@ -1,3 +1,5 @@
+require 'open-uri'
+
 class Stdout
   include Enumerable
 
@@ -9,7 +11,7 @@ class Stdout
     end
 
     def each(&blk)
-      File.open(path, 'r') do |f|
+      open(path, 'r') do |f|
         Oj.sc_parse(FrameIterator.new(blk), f)
       end
     end

app/uploaders/asciicast_uploader.rb

@@ -1,3 +1,13 @@
 class AsciicastUploader < BaseUploader
 
+  def url
+    url = super
+
+    if url[0] == '/'
+      path
+    else
+      url
+    end
+  end
+
 end