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* Rack::JSONP breaks Rack::Mime by mutating content type
@ 2010-08-12 16:22 Samuel Lebeau
  0 siblings, 0 replies; only message in thread
From: Samuel Lebeau @ 2010-08-12 16:22 UTC (permalink / raw)
  To: Rack Development


I've filed a ticket on Github [1] but realized later that the
preferred way is to post a message here.
Here is the issue: `Rack::JSONP` uses `gsub!` to change content type,
which has the disastrous effect of altering

Say you're using Sinatra, with `content_type :json` in some route's
block, it looks up `MIME_TYPES` under the hood, which is then mutated
by `JSONP`: subsequent requests are then served as javascript and are
ignored by the middleware.

IMHO it should use `gsub` instead (I can see no reason for Sinatra to
duplicate the mime type upstream), and `Rack::Mime::MIME_TYPES` could
even `freeze` its content type strings to prevent this kind of errors.

I've made a patch on my fork, I hope this will be useful [2].


[1] http://github.com/rack/rack-contrib/issues/9
[2] http://github.com/samleb/rack-contrib/commit/2921c9e78b6c473d5d42162a2c33ac90773ce291

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