Ruby on Rails syntax highlight switcher for Sublime Text 2

syntax_highlighting.py

import sublime, sublime_plugin
import os

class DetectFileTypeCommand(sublime_plugin.EventListener):
  """ Detects current file type if the file's extension isn't conclusive """
  """ Modified for Ruby on Rails and Sublime Text 2 """
  """ Original pastie here: http://pastie.org/private/kz8gtts0cjcvkec0d4quqa """

  def on_load(self, view):
    filename = view.file_name()
    if not filename: # buffer has never been saved
      return

    name = os.path.basename(filename.lower())
    if name[-8:] == "_spec.rb":
      set_syntax(view, "Rspec", "User/rspec")
    elif name == "factories.rb":
      set_syntax(view, "Rspec", "User/rspec")
    elif name == "gemfile":
      set_syntax(view, "Ruby on Rails", "Rails")
    elif name[-3] == "erb"
      set_sintax(view, "HTML (Rails)", "Rails")
    elif name[-2:] == "rb":
      set_syntax(view, "Ruby on Rails", "Rails")


def set_syntax(view, syntax, path=None):
  if path is None:
    path = syntax
  view.settings().set('syntax', 'Packages/'+ path + '/' + syntax + '.tmLanguage')
  print "Switched syntax to: " + syntax

How does one use this?

This SO post has instructions: http://stackoverflow.com/q/8607683/276959