Updates for URI saving and thumbnails refreshing

git-svn-id: https://svn.thoughtbot.com/plugins/paperclip/trunk@216 7bbfaf0e-4d1d-0410-9690-a8bb5f8ef2aa

lib/paperclip.rb

@@ -173,6 +173,7 @@ module Thoughtbot #:nodoc:
           whine_about_columns_for attachments[attr]
 
           define_method "#{attr}=" do |uploaded_file|
+            uploaded_file = fetch_uri(uploaded_file) if uploaded_file.is_a? URI
             return send("destroy_#{attr}") if uploaded_file.nil?
             return unless is_a_file? uploaded_file
             
@@ -432,6 +433,29 @@ module Thoughtbot #:nodoc:
         end
       end
       
+      def fetch_uri uri
+        image = if uri.scheme == 'file'
+          path = url.gsub(%r{^file://}, '/')
+          open(path)
+        else
+          require 'open-uri'
+          uri
+        end
+        begin
+          data = StringIO.new(image.read)
+          uri.extend(Upfile)
+          class << data
+            attr_accessor :original_filename, :content_type
+          end
+          data.original_filename = uri.original_filename
+          data.content_type = uri.content_type
+          data
+        rescue OpenURI::HTTPError => e
+          $stderr.puts "#{e.message}: #{uri.to_s}"
+          return nil
+        end
+      end
+      
       def is_a_file? data
         [:content_type, :original_filename, :read].map do |meth|
           data.respond_to? meth

tasks/paperclip_tasks.rake

@@ -5,7 +5,7 @@ end
 
 def obtain_attachments
   name = ENV['ATTACHMENT'] || ENV['attachment']
-  if name.blank? || @klass.attachment_names.include?(name)
+  if !name.blank? && @klass.attachment_names.include?(name)
     [ name ]
   else
     @klass.attachment_names
@@ -21,7 +21,10 @@ namespace :paperclip do
     
     puts "Regenerating thumbnails for #{instances.length} instances:"
     instances.each do |instance|
-      names.each do |names|
+      names.each do |name|
+        original_file = instance.send("#{name}_file_name", :original)
+        next if original_file.blank?
+        instance.send("#{name}=", File.new(original_file))
         instance.send("process_#{name}_thumbnails")
       end
       print instance.save ? "." : "x"; $stdout.flush