# \[RubyCocoa\] how is validateValue:forKey:error: supported?

**URL:** <https://www.ruby-forum.com/t/rubycocoa-how-is-validatevalueerror-supported/155803>\
**Category:** Ruby\
**Created:** [December 17, 2008, 2:13am UTC](https://www.ruby-forum.com/t/rubycocoa-how-is-validatevalueerror-supported/155803 "2008-12-17T02:13:40Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![polypus](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/p/b5ac83/32.png) [@polypus](https://www.ruby-forum.com/u/polypus)\
**Post date:** [December 17, 2008, 2:13am UTC](https://www.ruby-forum.com/t/rubycocoa-how-is-validatevalueerror-supported/155803/1 "2008-12-17T02:13:40Z")

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hi,

so how does one do kvc validation in rubycocoa?

thanks,  
\_c