# Captcha

**URL:** <https://www.ruby-forum.com/t/captcha/181525>\
**Category:** Rails\
**Created:** [January 13, 2010, 7:10am UTC](https://www.ruby-forum.com/t/captcha/181525 "2010-01-13T07:10:25Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![tom-mac](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/bc8723/32.png) [@tom-mac](https://www.ruby-forum.com/u/tom-mac)\
**Post date:** [January 13, 2010, 7:10am UTC](https://www.ruby-forum.com/t/captcha/181525/1 "2010-01-13T07:10:25Z")

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Hi

```
 I have to use captcha in my rails application (For example at time

```

of register a user) Could anyone please suggest the best and easy to use  
captcha gem or plugin in rails. Rails version is 2.3.5

Thanks  
Tom

---

<div class="post-metadata">

**Author:** ![tom-mac](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/bc8723/32.png) [@tom-mac](https://www.ruby-forum.com/u/tom-mac)\
**Post date:** [January 13, 2010, 8:57am UTC](https://www.ruby-forum.com/t/captcha/181525/2 "2010-01-13T08:57:05Z")

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Hi  
Thanks for your reply. Actualy i am not using any one…My question  
was which gem to use that is latest and easy in usage

Tom

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<div class="post-metadata">

**Author:** ![tom-mac](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/bc8723/32.png) [@tom-mac](https://www.ruby-forum.com/u/tom-mac)\
**Post date:** [January 13, 2010, 7:39am UTC](https://www.ruby-forum.com/t/captcha/181525/3 "2010-01-13T07:39:28Z")

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Tom M. wrote:

> Hi
> 
> ```
> I have to use captcha in my rails application (For example at time
> 
> ```
> 
> of register a user) Could anyone please suggest the best and easy to use  
> captcha gem or plugin in rails. Rails version is 2.3.5
> 
> Thanks  
> Tom

Tom, let us say that you are using captcha when users post something. I  
assume that you are using SimpleCaptcha

## Here is the controller code

def create  
@classified = Classified.new(params[:classified])  
if @classified.save\_with\_captcha  
redirect\_to(‘/’)  
else  
render :action=\>‘new’  
end  
end

## Here is the view code

\<%= show\_simple\_captcha(:object =\> “classified”, :code\_type=\>“numeric”)  
%\>

## Here is your application controller code

include SimpleCaptcha::ControllerHelpers

I have here an working craigslist clone application that uses captcha

> **[GitHub - railslist/craigslist-clone: railslist is a craigslist clone](https://github.com/railslist/craigslist-clone)**
>
> railslist is a craigslist clone. Contribute to railslist/craigslist-clone development by creating an account on GitHub.