# How do I determine the used rails version from within Ruby?

**URL:** <https://www.ruby-forum.com/t/how-do-i-determine-the-used-rails-version-from-within-ruby/92436>\
**Category:** Engines\
**Created:** [April 19, 2007, 2:42pm UTC](https://www.ruby-forum.com/t/how-do-i-determine-the-used-rails-version-from-within-ruby/92436 "2007-04-19T14:42:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sebastian\_Winkler](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c0e974/32.png) [@Sebastian\_Winkler](https://www.ruby-forum.com/u/Sebastian_Winkler)\
**Post date:** [April 19, 2007, 2:42pm UTC](https://www.ruby-forum.com/t/how-do-i-determine-the-used-rails-version-from-within-ruby/92436/1 "2007-04-19T14:42:14Z")

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How do I determine the used rails version from within Ruby?

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<div class="post-metadata">

**Author:** ![Sebastian\_Winkler](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/c0e974/32.png) [@Sebastian\_Winkler](https://www.ruby-forum.com/u/Sebastian_Winkler)\
**Post date:** [October 26, 2007, 11:48pm UTC](https://www.ruby-forum.com/t/how-do-i-determine-the-used-rails-version-from-within-ruby/92436/2 "2007-10-26T23:48:25Z")

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Sebastian Winkler wrote:

> How do I determine the used rails version from within Ruby?

I was asking the same question off google when I found your post. So I  
searched through vendor/rails for ‘VERSION’ and found  
Rails::VERSION::STRING.

$ script/console  
Loading development environment.

> > Rails::VERSION::STRING  
> > =\> “1.2.0”
> 
> > exit