# Model.find(:first, :lock=\>true) Unknown key(s) :lock

**URL:** <https://www.ruby-forum.com/t/model-find-first-lock-true-unknown-key-s-lock/83270>\
**Category:** Rails\
**Created:** [January 24, 2007, 7:51pm UTC](https://www.ruby-forum.com/t/model-find-first-lock-true-unknown-key-s-lock/83270 "2007-01-24T19:51:01Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jsmecham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/f475e1/32.png) [@jsmecham](https://www.ruby-forum.com/u/jsmecham)\
**Post date:** [January 24, 2007, 7:51pm UTC](https://www.ruby-forum.com/t/model-find-first-lock-true-unknown-key-s-lock/83270/1 "2007-01-24T19:51:01Z")

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Rails 1.2.1

Has anyone ever gotten this error? According to the API, this is exactly  
how you are suppose to use it

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**Author:** ![jsmecham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/f475e1/32.png) [@jsmecham](https://www.ruby-forum.com/u/jsmecham)\
**Post date:** [January 24, 2007, 10:33pm UTC](https://www.ruby-forum.com/t/model-find-first-lock-true-unknown-key-s-lock/83270/2 "2007-01-24T22:33:35Z")

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Justin M. wrote:

> Rails 1.2.1
> 
> Has anyone ever gotten this error? According to the API, this is exactly  
> how you are suppose to use it

My error. I am using version 1.1.6. This feature is rails 1.2.1 only.

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<div class="post-metadata">

**Author:** ![jsmecham](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/f475e1/32.png) [@jsmecham](https://www.ruby-forum.com/u/jsmecham)\
**Post date:** [January 24, 2007, 10:40pm UTC](https://www.ruby-forum.com/t/model-find-first-lock-true-unknown-key-s-lock/83270/3 "2007-01-24T22:40:50Z")

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Justin M. wrote:

> Rails 1.2.1
> 
> Has anyone ever gotten this error? According to the API, this is exactly  
> how you are suppose to use it

WFM. Are you sure you’re on 1.2.1? Check your environment.rb  
for a RAILS\_GEM\_VERSION constant, or vendor/rails for old source.

–  
We develop, watch us RoR, in numbers too big to ignore.