# Rails 2.0 Compatible with Previous Prototype & Scriptaculous?

**URL:** <https://www.ruby-forum.com/t/rails-2-0-compatible-with-previous-prototype-scriptaculous/119889>\
**Category:** Rails\
**Created:** [November 11, 2007, 11:55pm UTC](https://www.ruby-forum.com/t/rails-2-0-compatible-with-previous-prototype-scriptaculous/119889 "2007-11-11T23:55:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\
**Post date:** [November 11, 2007, 11:55pm UTC](https://www.ruby-forum.com/t/rails-2-0-compatible-with-previous-prototype-scriptaculous/119889/1 "2007-11-11T23:55:48Z")

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Is Rails 2.0 compatible with Prototype 1.5.1 & Scriptaculous 1.7?

We’re preparing to upgrade a large Rails app to 2.0 RC1. Our app makes  
extensive use of methods in PrototypeHelper and ScriptaculousHelper.  
It also uses other Javascript libraries (e.g., Control.Modal,  
Control.Tabs) that are tied to Prototype version 1.5.1.

Ideally, we would upgrade Rails to 2.0, but stick with our current  
versions of Prototype (1.5.1) and Scriptaculous (1.7) for now. Would  
that work out OK? Or does Rails 2.0 require the current releases of  
these libraries?

Michael