# About the plugin:auto\_complete

**URL:** <https://www.ruby-forum.com/t/about-the-plugin-auto-complete/131555>\
**Category:** Rails\
**Created:** [March 11, 2008, 10:04am UTC](https://www.ruby-forum.com/t/about-the-plugin-auto-complete/131555 "2008-03-11T10:04:21Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![xieoy](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/x/b77776/32.png) [@xieoy](https://www.ruby-forum.com/u/xieoy)\
**Post date:** [March 11, 2008, 10:04am UTC](https://www.ruby-forum.com/t/about-the-plugin-auto-complete/131555/1 "2008-03-11T10:04:21Z")

</div>

I follow the instruction :

[http://wiki.rubyonrails.org/rails/pages/How+to+use+text\_field\_with\_auto\_complete](http://wiki.rubyonrails.org/rails/pages/How+to+use+text_field_with_auto_complete)

but failed

My Firebug said

* * *

[http://localhost:3001/users/auto\_complete\_for\_language\_name422](http://localhost:3001/users/auto_complete_for_language_name422)  
(360ms) prototype.js (line 1222)

* * *

I dont know why?

My Rails is 2.0  
Window XP  
Firefox 2.0

Thanks

Best regard,  
xieoy