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ajax_request? method to XHR detection (See related posts)

A oneline helper I put in all of my apps. Looks for HTTP headers that signal you're being called via an XmlHttpRequest. I use it for instant degradable AJAX by rendering a template if it's as usual but just rendering a partial if they just want that part!

  def ajax_request?
    request.env['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest' || params[:ajax]  # params[:ajax] for safe-keeping, FIXME if it works w/ all browsers
  end
to ruby rails rubyonrails ajax xhr xmlhttprequest by jamiew on Tue Jan 23 08:00:17 +0000 2007

Comments on this post

fermion posts on Feb 12, 2007 at 18:27
Hey - you could also just say:

request.xhr?

The 'request' variable available in the controller can already tell you if it's an ajax request.

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