问题
i've found numerous things online for this but they dont work for me. am i missing something.
In my controller i have
@t = ["a","b","c"]
in the erb file that is 'callback' the @t renders like so:
["a", "b", "c"] 
i've done hacks to replace the " to proper ' symbols. I've read that to_json should work but it doesnt.  The following does not work ["a","b","c"].to_json.  The results are the same.
回答1:
to_json is working fine. What you're running into is Rails 3.x's XSS protection. There's a good article on this at Railscasts/ASCIIcasts. The gist, though, is that you need to use the raw or html_safe methods:
In your controller:
@t_json = @t.to_json.html_safe
OR in your view:
<%= raw @t %>
来源:https://stackoverflow.com/questions/7561430/use-ruby-array-for-a-javascript-array-in-erb-escaping-quotes