[rspec-users] [Cucumber, rspec-rails] uninitialized constant ActionController::UrlEncodedPairParser

Mike Gaffney mr.gaffo at gmail.com
Mon Feb 16 17:42:51 EST 2009

They are now using using the parser in Rack.

Likely Rspec doesn't have this yet on a release or possibly even master. 
Take a look at:


For a similar patch.


s.ross wrote:
> It seems there's a known anomaly between rspec-rails and Rails 2.3. 
> That causes the error "uninitialized constant 
> ActionController::UrlEncodedPairParser". I know there is a fix in 
> somebody's repo, but what's the best way to get a working gem version 
> of webrat/cucumber/rspec/rspec-rails that will work with 2.2.2 and 
> 2.3? Scrubbing the gems off and installing the latest release gems 
> don't pull in the fix.
> Thanks
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