Added generator

git-svn-id: https://svn.thoughtbot.com/plugins/paperclip/trunk@212 7bbfaf0e-4d1d-0410-9690-a8bb5f8ef2aa

generators/paperclip/USAGE

+Usage:
+
+  script/generate attachment Class attachment1 attachment2
+  
+This will create a migration that will add the proper columns to your class's table.
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generators/paperclip/paperclip_generator.rb

+class PaperclipGenerator < Rails::Generator::NamedBase
+  attr_accessor :attachments
+ 
+  def initialize(*args)
+    super(*args)
+    @attachments = args
+  end
+ 
+  def manifest
+    record do |m|
+      m.migration_template "paperclip_migration.rb", File.join('db', 'migrate')
+    end
+  end 
+ 
+end
\ No newline at end of file

generators/paperclip/templates/paperclip_migration.rb

+class AddPaperclipAttachmentColumnsTo<%= class_name.underscore.camelize %> < ActiveRecord::Migration
+  def self.up
+<% attachments.each do |attachment| -%>
+    add_column :<%= class_name.underscore.camelize.tableize %>, :<%= attachment %>_file_name, :string
+    add_column :<%= class_name.underscore.camelize.tableize %>, :<%= attachment %>_content_type, :string
+<% end -%>
+  end
+
+  def self.down
+<% attachments.each do |attachment| -%>
+    remove_column :<%= class_name.underscore.camelize.tableize %>, :<%= attachment %>_file_name
+    remove_column :<%= class_name.underscore.camelize.tableize %>, :<%= attachment %>_content_type
+<% end -%>
+  end
+end

tasks/paperclip_tasks.rake

@@ -29,6 +29,11 @@ namespace :paperclip do
     puts " Done."
   end
   
+  desc "Generates a migration to add attachments to a class."
+  task :migration do
+    
+  end
+  
   # desc "Cleans out unused attachments for the given CLASS (and optional ATTACHMENT)"
   # task :clean do
   #   klass     = obtain_class