# CSV::Writer with Rails 1.2.1

**URL:** <https://www.ruby-forum.com/t/csv-writer-with-rails-1-2-1/83955>\
**Category:** Rails\
**Created:** [January 31, 2007, 1:52am UTC](https://www.ruby-forum.com/t/csv-writer-with-rails-1-2-1/83955 "2007-01-31T01:52:15Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tom](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/3d9bf3/32.png) [@tom](https://www.ruby-forum.com/u/tom)\
**Post date:** [January 31, 2007, 1:52am UTC](https://www.ruby-forum.com/t/csv-writer-with-rails-1-2-1/83955/1 "2007-01-31T01:52:15Z")

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Is anyone else having problems generating CSV files after upgrading to  
1.2.1?

The error looks like this:

uninitialized constant MyController::CSV  
/usr/lib/ruby/gems/1.8/gems/activesupport-1.4.0/lib/active\_support/  
dependencies.rb:478:in `const\_missing’

It worked fine until the 1.2.1 upgrade!

Thanks!  
Tom

---

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**Author:** ![tom](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/3d9bf3/32.png) [@tom](https://www.ruby-forum.com/u/tom)\
**Post date:** [January 31, 2007, 1:57am UTC](https://www.ruby-forum.com/t/csv-writer-with-rails-1-2-1/83955/2 "2007-01-31T01:57:16Z")

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On 1/30/07, Tom [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> It worked fine until the 1.2.1 upgrade!
> 
> Thanks!  
> Tom

Are you explicitly requiring csv?

require ‘csv’  
class MyController \< ApplicationController  
…  
end

–  
Zack C.  
[http://depixelate.com](http://depixelate.com)

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<div class="post-metadata">

**Author:** ![tom](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/3d9bf3/32.png) [@tom](https://www.ruby-forum.com/u/tom)\
**Post date:** [January 31, 2007, 2:00am UTC](https://www.ruby-forum.com/t/csv-writer-with-rails-1-2-1/83955/3 "2007-01-31T02:00:16Z")

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Thanks Zack! I didn’t think about explicitly requiring it, but that  
did the trick!

–Tom