title: Status of Rails' link_to_function deprecation?
body: <p>What is the status of the <code>link_to_function</code> Javascript helper in Rails? I read, including in <a href="https://stackoverflow.com/questions/5063246/rails-3-status-of-link-to-function-method">this stackoverflow question</a>, that it was deprecated in Rails 3.0, then undeprecated, then deprecated again in 3.2.4. Is it something I can depend on and teach students? I just read the <a href="http://weblog.rubyonrails.org/2012/8/9/ann-rails-3-2-8-has-been-released/" rel="nofollow noreferrer">release notes (from a search) for Rails 3.2.8</a>:</p>
  
  <blockquote>
    <p>Reverted the deprecation of button_to_function and link_to_function helpers. Rafael Mendonça França</p>
  </blockquote>
  
  <p>Where does this stand now?</p>