ruby 1.9.3 can't use open3 (uninitialized constant ConfigureController::Open3)

Question

The project works fine in Ruby 1.9.2, but I want to use 1.9.3.

This line worked fine in 1.9.2:

    o, e, s = Open3.capture3("echo a; sort >&2", :stdin_data=>"foo\nbar\nbaz\n")

However in 1.9.3, I get

uninitialized constant ConfigureController::Open3

Do I have to install the module, or something? thanks!

Answer 1

Did you require 'open3' at the top of your source file? It's possible that before, it was required in turn by something else you were requiring, but now in 1.9.3 it is not. You may need to explicitly require it.