Rails - Aug 2012 - question regarding proper use of render :js for handling AJAX requests

Dear rails gurus,

Is this a proper way to write the following render :js argument inside a 
controller for handling a simple AJAX response (div update) to a JS request 
using rails 3.2.1?

render :js => ''$("span#main").html("'' + 
escape_javascript(File.read(''app/views/main/my_file.html.erb''))
+ ''");''

While this code is working, it seems a little clunky e.g. the File.read 
call feels out-of-place somehow... but then again, what do I know? :-P

Thanks for your comments/advice! The main reason why I am doing this is as 
a shortcut to avoid creating a .js.erb file, where I would have something 
like:

escape_javascript(render template:''main/my_file.html.erb'')

instead; trying to run this inside of the controller gave me a couple 
issues:

1. the "render template" returned a length-1 array instead of a
string,
which I had to reference the 0th-element of in order to get 
escape_javascript not to throw a "gsub on Array" error
2. can''t use render twice in the same line (double redirect error) led
me
to the alternative "File.read..." idea

Forgive me if this question has been posted before, and thank you all in 
advance for your kind assistance.

Danny 

@katchwreck


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