Moved methods around for easier scripting in rake tasks.

git-svn-id: https://svn.thoughtbot.com/plugins/paperclip/trunk@210 7bbfaf0e-4d1d-0410-9690-a8bb5f8ef2aa

lib/paperclip.rb

@@ -81,7 +81,7 @@ module Thoughtbot #:nodoc:
       #   of nonzero size.
       # * destroy_attachment(complain = false): Flags the attachment and all thumbnails for deletion. Sets
       #   the +attachment_file_name+ column and +attachment_content_type+ column to +nil+. Set +complain+
-      #   to true to override the +whiny_deletes+ option. Note, this does not actually delete the attachment.
+      #   to true to override the +whiny_deletes+ option. NOTE: this does not actually delete the attachment.
       #   You must still call +save+ on the model to actually delete the file and commit the change to the
       #   database.
       #
@@ -164,6 +164,8 @@ module Thoughtbot #:nodoc:
       def has_attached_file *attachment_names
         options = attachment_names.last.is_a?(Hash) ? attachment_names.pop : {}
         options = DEFAULT_ATTACHMENT_OPTIONS.merge(options)
+        @attachment_names ||= []
+        @attachment_names += attachment_names
 
         include InstanceMethods
         attachments ||= {}
@@ -188,13 +190,7 @@ module Thoughtbot #:nodoc:
             write_attribute(:"#{attr}_content_type", attachments[attr][:content_type])
             
             if attachments[attr][:attachment_type] == :image
-              attachments[attr][:thumbnails].each do |style, geometry|
-                begin
-                  attachments[attr][:files][style] = make_thumbnail(attachments[attr], attachments[attr][:files][:original], geometry)
-                rescue PaperclipError => e
-                  attachments[attr][:errors] << "thumbnail '#{style}' could not be created."
-                end
-              end
+              send("process_#{attr}_thumbnails")
             end
 
             uploaded_file
@@ -234,6 +230,10 @@ module Thoughtbot #:nodoc:
             end
           end
           
+          define_method "process_#{attr}_thumbnails" do
+            make_thumbnails attachments[attr]
+          end
+          
           define_method "destroy_#{attr}" do |*args|
             complain = args.first || false
             if attachments[attr].keys.any?
@@ -272,6 +272,10 @@ module Thoughtbot #:nodoc:
         end
       end
       
+      def attachments
+        @attachment_names
+      end
+      
       # Adds errors if the attachments you specify are either missing or had errors on them.
       # Essentially, acts like validates_presence_of for attachments.
       def validates_attached_file *attachment_names
@@ -359,6 +363,16 @@ module Thoughtbot #:nodoc:
         end
       end
 
+      def make_thumbnails attachment
+        attachment[:thumbnails].each do |style, geometry|
+          begin
+            attachment[:files][style] = make_thumbnail(attachment, attachment[:files][:original], geometry)
+          rescue PaperclipError => e
+            attachment[:errors] << "thumbnail '#{style}' could not be created."
+          end
+        end
+      end
+
       def make_thumbnail attachment, orig_io, geometry
         operator = geometry[-1,1]
         begin

tasks/paperclip_tasks.rake

 namespace :paperclip do
   # desc "Regenerates thumbnails for a given CLASS (and optional ATTACHMENT)"
   # task :refresh do
+  #   klass = obtain_class
+  #   attachment = ENV['ATTACHMENT']
+  #   attachments = attachment.blank? ? klass.attachments : [attachment]
+  #   instances = klass.find(:all)
+  #   puts "Regenerating thumbnails for #{instances.length} instances:"
+  #   instances.each do |instance|
+  #     attachments.each do |attach|
+  #       instance.send("process_#{attach}_thumbnails")
+  #     end
+  #     print instance.save ? "." : "x"; $stdout.flush
+  #   end
   # end
-  # 
+  
   # desc "Cleans out unused attachments for the given CLASS (and optional ATTACHMENT)"
   # task :clean do
   # end

test/paperclip_images_test.rb

@@ -11,6 +11,10 @@ class PaperclipImagesTest < Test::Unit::TestCase
     assert @document  = File.new(File.join(File.dirname(__FILE__), 'fixtures', 'test_document.doc'))
     assert @foo.image = @file
   end
+  
+  def test_should_supply_all_attachment_names
+    assert_equal %w( image ), Foo.attachments.map{|a| a.to_s }.sort
+  end
 
   def test_should_validate_before_save
     assert @foo.image_valid?

test/paperclip_non_standard_test.rb

@@ -11,6 +11,10 @@ class PaperclipNonStandardTest < Test::Unit::TestCase
     assert @ns.resume = @resume
     assert @ns.avatar = @avatar
   end
+  
+  def test_should_supply_all_attachment_names
+    assert_equal %w( avatar resume ), NonStandard.attachments.map{|a| a.to_s }.sort
+  end
 
   def test_should_validate_before_save
     assert @ns.avatar_valid?

test/paperclip_test.rb

@@ -9,6 +9,10 @@ class PaperclipTest < Test::Unit::TestCase
     assert @file = File.new(File.join(File.dirname(__FILE__), 'fixtures', 'test_document.doc'))
     assert @bar.document = @file
   end
+  
+  def test_should_supply_all_attachment_names
+    assert_equal %w( document ), Bar.attachments.map{|a| a.to_s }.sort
+  end
 
   def test_should_validate_before_save
     assert @bar.document_valid?