# \[DEPRECATED\] WARNING

**URL:** <https://discuss.rubyonrails.org/t/deprecated-warning/48623>\
**Category:** rubyonrails-talk\
**Created:** [January 16, 2010, 3:27am UTC](https://discuss.rubyonrails.org/t/deprecated-warning/48623 "2010-01-16T03:27:36Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![11155](https://avatars.discourse-cdn.com/v4/letter/1/d26b3c/32.png) [@11155](https://discuss.rubyonrails.org/u/11155)\
**Post date:** [January 16, 2010, 3:27am UTC](https://discuss.rubyonrails.org/t/deprecated-warning/48623/1 "2010-01-16T03:27:36Z")

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Hi..

require "spreadsheet/Excel"

in my controller i have a method to generate reports for my logs. That functionality works fine. Why do i get the below errors in my server console.

[DEPRECATED] By requiring 'spreadsheet/excel' you are loading a Compatibility &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;layer which provides a drop-in replacement for Spreadsheet::Excel &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;versions \<= 0.3.5.1. This code will be removed in Spreadsheet &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;version 1.0.0

Thanks for any help!

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**Author:** ![pharrington](https://avatars.discourse-cdn.com/v4/letter/p/e95f7d/32.png) [@pharrington](https://discuss.rubyonrails.org/u/pharrington)\
**Post date:** [January 16, 2010, 7:41am UTC](https://discuss.rubyonrails.org/t/deprecated-warning/48623/2 "2010-01-16T07:41:33Z")

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By requiring 'spreadsheet/excel' you are loading a Compatibility layer which provides a drop-in replacement for Spreadsheet::Excel versions \<= 0.3.5.1. This code will be removed in Spreadsheet version 1.0.0.

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**Author:** ![11155](https://avatars.discourse-cdn.com/v4/letter/1/d26b3c/32.png) [@11155](https://discuss.rubyonrails.org/u/11155)\
**Post date:** [January 16, 2010, 8:50am UTC](https://discuss.rubyonrails.org/t/deprecated-warning/48623/3 "2010-01-16T08:50:48Z")

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pharrington wrote:

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**Author:** ![pharrington](https://avatars.discourse-cdn.com/v4/letter/p/e95f7d/32.png) [@pharrington](https://discuss.rubyonrails.org/u/pharrington)\
**Post date:** [January 16, 2010, 9:17am UTC](https://discuss.rubyonrails.org/t/deprecated-warning/48623/4 "2010-01-16T09:17:54Z")

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This is answered on the guide on the gem's homepage. (Too be far, the "have a look at the GUIDE" link is broken, but just scroll down a tiny bit...)