skojin/eval_javascript_in_parent_helper.rb

## eval_javascript_in_parent_helper.rb
# more simple version of https://github.com/itkin/respond_to_parent.git without dirty hacks that works good in rails3
# usage:
#   in controller#create append render :layout => false
#   in create.html.erb
#     <%= eval_javascript_in_parent(<<EOF
#       $('#entries-list').prepend('#{escape_javascript(render @entry)}');
#       EOF
#     ) %>
#
# most source from https://github.com/itkin/respond_to_parent/blob/master/lib/responds_to_parent.rb
module EvalJavascriptInParentHelper
  # Executes JavaScript in the context of the parent window.
  # Use this method of you are posting a form to a hidden IFRAME or if you would like
  # to use IFRAME base RPC.
  def eval_javascript_in_parent(script)

      # Escape quotes, linebreaks and slashes, maintaining previously escaped slashes
      # Suggestions for improvement?
      script = (script || '').
        gsub('\\', '\\\\\\').
        gsub(/\r\n|\r|\n/, '\\n').
        gsub(/['"]/, '\\\\\&').
        gsub('</script>','</scr"+"ipt>')

      # Eval in parent scope and replace document location of this frame
      # so back button doesn't replay action on targeted forms
      # loc = document.location to be set after parent is updated for IE
      # with(window.parent) - pull in variables from parent window
      # setTimeout - scope the execution in the windows parent for safari
      # window.eval - legal eval for Opera
      "<html><body><script type='text/javascript' charset='utf-8'>
        var loc = document.location;
        with(window.parent) { setTimeout(function() { window.eval('#{script}'); if (typeof(loc) !== 'undefined') loc.replace('about:blank'); }, 1) };
        </script></body></html>".html_safe

  end
end
	# more simple version of https://github.com/itkin/respond_to_parent.git without dirty hacks that works good in rails3
	# usage:
	# in controller#create append render :layout => false
	# in create.html.erb
	# <%= eval_javascript_in_parent(<<EOF
	# $('#entries-list').prepend('#{escape_javascript(render @entry)}');
	# EOF
	# ) %>
	#
	# most source from https://github.com/itkin/respond_to_parent/blob/master/lib/responds_to_parent.rb
	module EvalJavascriptInParentHelper
	# Executes JavaScript in the context of the parent window.
	# Use this method of you are posting a form to a hidden IFRAME or if you would like
	# to use IFRAME base RPC.
	def eval_javascript_in_parent(script)

	# Escape quotes, linebreaks and slashes, maintaining previously escaped slashes
	# Suggestions for improvement?
	script = (script \|\| '').
	gsub('\\', '\\\\\\').
	gsub(/\r\n\|\r\|\n/, '\\n').
	gsub(/['"]/, '\\\\\&').
	gsub('</script>','</scr"+"ipt>')

	# Eval in parent scope and replace document location of this frame
	# so back button doesn't replay action on targeted forms
	# loc = document.location to be set after parent is updated for IE
	# with(window.parent) - pull in variables from parent window
	# setTimeout - scope the execution in the windows parent for safari
	# window.eval - legal eval for Opera
	"<html><body><script type='text/javascript' charset='utf-8'>
	var loc = document.location;
	with(window.parent) { setTimeout(function() { window.eval('#{script}'); if (typeof(loc) !== 'undefined') loc.replace('about:blank'); }, 1) };
	</script></body></html>".html_safe

	end
	end