Rails gem generator pattern

gistfile1.rb

# Simple pattern to generate both migration file and copy
# other files

require 'rails/generators'
require 'rails/generators/migration'
require 'rails/generators/active_record'

class FooGemGenerator < Rails::Generators::Base
  include Rails::Generators::Migration

  desc "some descrption"

  self.source_paths << File.join(File.dirname(__FILE__), 'templates')

  def self.next_migration_number(path)
    ActiveRecord::Generators::Base.next_migration_number(path)
  end

  def create_migration_file
    migration_template "create_foo.rb", "db/migrate/create_foo.rb"
  end

  def copy_other_file
    copy_file "foo.yml", "app/models/foo.yml"
  end

end

# Usage
# $ rails g foo_gem