module Rails::Generators::Migration

def self.included(base) #:nodoc:

:nodoc: 
def self.included(base) #:nodoc:
  base.extend ClassMethods
end

def migration_template(source, destination=nil, config={})


migration_template "migration.rb", "db/migrate/add_foo_to_bar.rb"

==== Examples

available as instance variables in the template to be rendered.
The migration version, migration file name, migration class name are

to the destination file name.
to the default template method is that the migration version is appended
Creates a migration template at the given destination. The difference 
def migration_template(source, destination=nil, config={})
  destination = File.expand_path(destination || source, self.destination_root)
  migration_dir = File.dirname(destination)
  @migration_number     = self.class.next_migration_number(migration_dir)
  @migration_file_name  = File.basename(destination).sub(/\.rb$/, '')
  @migration_class_name = @migration_file_name.camelize
  destination = self.class.migration_exists?(migration_dir, @migration_file_name)
  if behavior == :invoke
    raise Error, "Another migration is already named #{@migration_file_name}: #{destination}" if destination
    destination = File.join(migration_dir, "#{@migration_number}_#{@migration_file_name}.rb")
  end
  template(source, destination, config)
end