# CAPTCHA gem

**URL:** <https://www.ruby-forum.com/t/captcha-gem/137690>\
**Category:** Ruby\
**Created:** [May 15, 2008, 10:55am UTC](https://www.ruby-forum.com/t/captcha-gem/137690 "2008-05-15T10:55:05Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![kisrti](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/d2c977/32.png) [@kisrti](https://www.ruby-forum.com/u/kisrti)\
**Post date:** [May 15, 2008, 10:55am UTC](https://www.ruby-forum.com/t/captcha-gem/137690/1 "2008-05-15T10:55:05Z")

</div>

Hi All,

## I am using ‘captcha gem’ in my code to implement ‘CAPTCHA’ functionality ,It gives following error :

MissingSourceFile in UserController#sign\_in

no such file to load – GD

RAILS\_ROOT: ./script/…/config/…  
Application Trace | Framework Trace | Full Trace

d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in`new\_constants\_in’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/captcha-0.1.2/lib/captcha.rb:22 d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in`gem\_original\_require’  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:32:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
#{RAILS\_ROOT}/app/controllers/user\_controller.rb:9

d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in`new\_constants\_in’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/captcha-0.1.2/lib/captcha.rb:22 d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in`gem\_original\_require’  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:32:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:203:in  
`load_without_new_constant_marking' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:203:in`load\_file’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:202:in`load\_file’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:94:in  
`require_or_load' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:248:in`load\_missing\_constant’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:452:in  
`const_missing' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:464:in`const\_missing’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/inflector.rb:250:in  
`constantize' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/core_ext/string/inflections.rb:148:in`constantize’  
d:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action\_controller/routing.rb:1284:in  
`recognize' d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:40:in`dispatch’  
d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick\_server.rb:113:in  
`handle_dispatch' d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:79:in`service’  
d:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' d:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in`run’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' d:/ruby/lib/ruby/1.8/webrick/server.rb:162:in`start’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' d:/ruby/lib/ruby/1.8/webrick/server.rb:95:in`start’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `each' d:/ruby/lib/ruby/1.8/webrick/server.rb:92:in`start’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start' d:/ruby/lib/ruby/1.8/webrick/server.rb:82:in`start’  
d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick\_server.rb:63:in  
`dispatch' d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/servers/webrick.rb:59 d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`gem\_original\_require’  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/server.rb:39  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’  
script/server:3

d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:342:in`new\_constants\_in’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:495:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/captcha-0.1.2/lib/captcha.rb:22 d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:32:in`gem\_original\_require’  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:32:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
#{RAILS\_ROOT}/app/controllers/user\_controller.rb:9  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:203:in  
`load_without_new_constant_marking' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:203:in`load\_file’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:202:in`load\_file’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:94:in  
`require_or_load' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:248:in`load\_missing\_constant’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:452:in  
`const_missing' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:464:in`const\_missing’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/inflector.rb:250:in  
`constantize' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/core_ext/string/inflections.rb:148:in`constantize’  
d:/ruby/lib/ruby/gems/1.8/gems/actionpack-1.13.3/lib/action\_controller/routing.rb:1284:in  
`recognize' d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/dispatcher.rb:40:in`dispatch’  
d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick\_server.rb:113:in  
`handle_dispatch' d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick_server.rb:79:in`service’  
d:/ruby/lib/ruby/1.8/webrick/httpserver.rb:104:in `service' d:/ruby/lib/ruby/1.8/webrick/httpserver.rb:65:in`run’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:173:in `start_thread' d:/ruby/lib/ruby/1.8/webrick/server.rb:162:in`start’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:162:in `start_thread' d:/ruby/lib/ruby/1.8/webrick/server.rb:95:in`start’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:92:in `each' d:/ruby/lib/ruby/1.8/webrick/server.rb:92:in`start’  
d:/ruby/lib/ruby/1.8/webrick/server.rb:23:in `start' d:/ruby/lib/ruby/1.8/webrick/server.rb:82:in`start’  
d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/webrick\_server.rb:63:in  
`dispatch' d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/servers/webrick.rb:59 d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`gem\_original\_require’  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`require' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active\_support/dependencies.rb:342:in  
`new_constants_in' d:/ruby/lib/ruby/gems/1.8/gems/activesupport-1.4.2/lib/active_support/dependencies.rb:495:in`require’  
d:/ruby/lib/ruby/gems/1.8/gems/rails-1.2.3/lib/commands/server.rb:39  
d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
`gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in`require’  
script/server:3

This error occurred while loading the following files:  
captcha  
GD

Request

Parameters: None

Show session dump

* * *

:user\_id:  
🇫🇷 {}

flash: !map:ActionController::Flash::FlashHash {}

## Response Headers: {“cookie”=\>[], “Cache-Control”=\>“no-cache”}

I have installed gem gd1.1 ,Still it’s not working.

Tell me if anyone can help me to come out of this problem?

---

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**Author:** ![kisrti](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/d2c977/32.png) [@kisrti](https://www.ruby-forum.com/u/kisrti)\
**Post date:** [May 15, 2008, 11:56am UTC](https://www.ruby-forum.com/t/captcha-gem/137690/2 "2008-05-15T11:56:07Z")

</div>

-------- Original-Nachricht --------

> Datum: Thu, 15 May 2008 17:55:06 +0900  
> Von: Ss Kk [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
> An: removed\_email\_address@domain.invalid  
> Betreff: CAPTCHA gem

> Application Trace | Framework Trace | Full Trace
> 
> d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
> `gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’

Hello,

do you require rubygems in your script, ie., do you have a line

require “rubygems”

before

require “captcha” …

in your script ?  
Maybe you can post some shortened bit of code …

Best regards,

Axel

---

<div class="post-metadata">

**Author:** ![kisrti](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/d2c977/32.png) [@kisrti](https://www.ruby-forum.com/u/kisrti)\
**Post date:** [May 15, 2008, 12:16pm UTC](https://www.ruby-forum.com/t/captcha-gem/137690/3 "2008-05-15T12:16:41Z")

</div>

Axel E. wrote:

> -------- Original-Nachricht --------
> 
> > Datum: Thu, 15 May 2008 17:55:06 +0900  
> > Von: Ss Kk [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
> > An: removed\_email\_address@domain.invalid  
> > Betreff: CAPTCHA gem
> 
> > Application Trace | Framework Trace | Full Trace
> > 
> > d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
> > `gem_original_require' d:/ruby/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’
> 
> Hello,
> 
> do you require rubygems in your script, ie., do you have a line
> 
> require “rubygems”
> 
> before
> 
> require “captcha” …
> 
> in your script ?  
> Maybe you can post some shortened bit of code …
> 
> Best regards,
> 
> Axel

Hi,  
Thanks for your reply Butit is not making any change ,Still same  
error

Here is code of my user controller:  
require ‘rubygems’  
require ‘captcha’//Gives error to this line

class UserController \< ApplicationController

def register  
var= CAPTCHA::Web.new  
var.to\_html(“captcha\_temp”)  
end  
end

And code of Captcha file: ,you will get :

“D:\ruby\lib\ruby\gems\1.8\gems\captcha-0.1.2\lib\captcha.rb”  
(If installed Captha gem)

Tell me what’s going wrong.

---

<div class="post-metadata">

**Author:** ![kisrti](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/d2c977/32.png) [@kisrti](https://www.ruby-forum.com/u/kisrti)\
**Post date:** [May 15, 2008, 12:52pm UTC](https://www.ruby-forum.com/t/captcha-gem/137690/4 "2008-05-15T12:52:14Z")

</div>

-------- Original-Nachricht --------

> Datum: Thu, 15 May 2008 19:16:41 +0900  
> Von: Ss Kk [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
> An: removed\_email\_address@domain.invalid  
> Betreff: Re: CAPTCHA gem

> > > `gem\_original\_require’  
> > > before  
> > > Hi,  
> > > def register
> 
> ## Tell me what’s going wrong.
> 
> Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/).

Hello,

there is a dependency problem. The captcha gem wants to load  
the GD library

[http://www.boutell.com/gd/](http://www.boutell.com/gd/)

(which is not written in Ruby).  
You’ll have to install that and probably one of the Ruby bindings  
to GD.  
From a search on Rubyforge, I gather that the Ruby gem GD is now  
called ruby-gd.  
As the captcha gem you’re trying to install has its last release  
on March 28, 2004 and the now-name-changed GD/ruby-gd gem releases only  
one file, from January, 30th, 2007, there might have happened some  
changes  
in the meantime, I’m afraid ☹

Maybe it’s good idea to contact the author of the ruby-gd gem  
to ask for help … or use some other turing test gem, like turing.

Best regards,

Axel

---

<div class="post-metadata">

**Author:** ![kisrti](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/d2c977/32.png) [@kisrti](https://www.ruby-forum.com/u/kisrti)\
**Post date:** [May 15, 2008, 12:43pm UTC](https://www.ruby-forum.com/t/captcha-gem/137690/5 "2008-05-15T12:43:59Z")

</div>

Ss Kk wrote:

> Hi All,
> 
> I am using ‘captcha gem’ in my code to implement ‘CAPTCHA’  
> functionality ,It gives following error :

* * *

> MissingSourceFile in UserController#sign\_in
> 
> no such file to load – GD
> 
> RAILS\_ROOT: ./script/…/config/… Application Trace | Framework Trace  
> | Full Trace
> 
> d:/ruby/lib/ruby/site\_ruby/1.8/rubygems/custom\_require.rb:27:in  
> `gem\_original\_require’  
> Well, from what you posted, require ‘rubygems’ is done somewhere in the  
> code you load (that’s the custom\_require line right there) and I guess  
> the captcha gem tries to load GD and cannot find it.  
> So your problem is either that GD is not correctly installed or that you  
> don’t have the correct GD version.  
> Try to isolate the problem by making a small unit test of just a test  
> program that does only the one thing you’re trying to do here:

require ‘rubygems’  
require ‘captcha’

var= CAPTCHA::Web.new  
p var.to\_html(“captcha\_temp”)

so that you don’t have all the Rails snick-snack to wade through.

Also, here’s a link to a discussion talking about the captcha gem  
[http://groups.google.com/group/uso-dev/browse\_thread/thread/63642201fb194e0d](http://groups.google.com/group/uso-dev/browse_thread/thread/63642201fb194e0d)

I think it mentions that it needs the ruby-gd gem and that that gem is  
source-only (so you need to compile yourself)

V.-

---

<div class="post-metadata">

**Author:** ![kisrti](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/d2c977/32.png) [@kisrti](https://www.ruby-forum.com/u/kisrti)\
**Post date:** [May 16, 2008, 7:02am UTC](https://www.ruby-forum.com/t/captcha-gem/137690/6 "2008-05-16T07:02:46Z")

</div>

Hi ,  
thanks for this.Now its working for me.