Comments on: How to improve the image quality and generate random string image in the plugin validates_captcha http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/ geeks redefined Fri, 25 Jan 2008 11:46:02 +0000 http://wordpress.com/ hourly 1 By: buy cialis online http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-684 buy cialis online Thu, 08 Mar 2007 05:36:54 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-684 <strong>buy cialis online</strong> buy cialis online

]]> By: Sur Max http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-546 Sur Max Wed, 07 Feb 2007 04:47:42 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-546 Hey Neeraj !! Check out my captcha plugin buddy. I have just launched it today on my new blog..... its almost the same way u are suggesting... It provides multiple image styles to chose from.. Check this out <a href="http://expressica.com/2007/02/06/simple-captcha-released-the-captcha-for-rails-applications/" rel="nofollow"><b>here</b></a> Hey Neeraj !!
Check out my captcha plugin buddy.
I have just launched it today on my new blog….. its almost the same way u are suggesting… It provides multiple image styles to chose from..
Check this out here

]]> By: Neeraj http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-545 Neeraj Wed, 07 Feb 2007 04:43:01 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-545 In my view unless you are the next yahoo, a simple image without much dots and distortion will serve the purpose. I downloaded your code and I like what I see. I don't want to put user through all this rigor if a simple text works. So I am making most of distortion , dots etc configurable. So next time if I am beaten by a blog you can just tune the configuration file without actually touching the code. If time permits and if you like the idea I would suggest you to make some of the parameters configurable. That would be a great help. Either way. Good work. Keep it up. In my view unless you are the next yahoo, a simple image without much dots and distortion will serve the purpose. I downloaded your code and I like what I see.

I don’t want to put user through all this rigor if a simple text works. So I am making most of distortion , dots etc configurable. So next time if I am beaten by a blog you can just tune the configuration file without actually touching the code.

If time permits and if you like the idea I would suggest you to make some of the parameters configurable. That would be a great help.

Either way. Good work. Keep it up.

]]> By: Sur http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-535 Sur Fri, 02 Feb 2007 11:11:55 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-535 Hi Eduard !! Actually my code was running very fine with the previous version of this plugin.... and i am using the same version since then.... people started getting errors with the new version.... so as you have given the patch for the newer version it should run fine i suppose. Thanks. I am not sure if you have read the <a href="http://ajaxonrails.wordpress.com/2007/02/02/expressica/" rel="nofollow"><b>latest post<b></a> here on this blog that i am moving my blog and also releasing my own captcha plugin that is really very simple to use and provides some cool image styles. I have also given sample images in the <a href="http://ajaxonrails.wordpress.com/2007/02/02/expressica/" rel="nofollow"><b>post above</b></a> Hi Eduard !!
Actually my code was running very fine with the previous version of this plugin…. and i am using the same version since then…. people started getting errors with the new version…. so as you have given the patch for the newer version it should run fine i suppose.
Thanks.

I am not sure if you have read the latest post here on this blog that i am moving my blog and also releasing my own captcha plugin that is really very simple to use and provides some cool image styles. I have also given sample images in the post above

]]> By: Eduard Martini http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-534 Eduard Martini Fri, 02 Feb 2007 11:03:25 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-534 As you maybe saw, this code is not working. I made some adjustments and is working perfectly for me. I modified to not use words and use random chains of letters. First in the CaptchaImageChallenge class replace constant 'WORDS' with this one: <b>LETTERS = %w[a b c d e f g h i j k l m n o p q r s t u v x z 1 2 3 4 5 6 7 8 9 0]</b> then replace all code from def generate(options = {}) with: <b> <code> options.reverse_merge!( :fontsize => 35, :padding => 20, :color => '#000', :background => '#fff', :fontweight => '500', :rotate => true, :font => config['font'] ).symbolize_keys! options[:fontweight] = case options[:fontweight] when 'bold' then 700 else options[:fontweight].to_i end text = Magick::Draw.new text.pointsize = options[:fontsize] text.font_weight = options[:fontweight] text.fill = options[:color] text.gravity = Magick::CenterGravity text.font = options[:font] if options[:font] #rotate text 5 degrees left or right text.rotation = (rand(2)==1 ? 5 : -5) if options[:rotate] metric = text.get_type_metrics(self.string) #add bg canvas = Magick::ImageList.new canvas </b> then add a private function to the class: <b> <code> def make_string(arr) size=rand(3)+4 str="" 1.upto(size) do |n| str+=arr[rand(arr.size)].to_s end return str.upcase end </code> </b> Thats all As you maybe saw, this code is not working. I made some adjustments and is working perfectly for me. I modified to not use words and use random chains of letters.
First in the CaptchaImageChallenge class replace constant ‘WORDS’ with this one:

LETTERS = %w[a b c d e f g h i j k l m n o p q r s t u v x z 1 2 3 4 5 6 7 8 9 0]

then replace all code from def generate(options = {}) with:


options.reverse_merge!(
:fontsize => 35,
:padding => 20,
:color => '#000',
:background => '#fff',
:fontweight => '500',
:rotate => true,
:font => config['font']
).symbolize_keys!

options[:fontweight] = case options[:fontweight]
when 'bold' then 700
else options[:fontweight].to_i
end

text = Magick::Draw.new
text.pointsize = options[:fontsize]
text.font_weight = options[:fontweight]
text.fill = options[:color]
text.gravity = Magick::CenterGravity
text.font = options[:font] if options[:font]

#rotate text 5 degrees left or right
text.rotation = (rand(2)==1 ? 5 : -5) if options[:rotate]

metric = text.get_type_metrics(self.string)

#add bg
canvas = Magick::ImageList.new
canvas

then add a private function to the class:


def make_string(arr)
size=rand(3)+4
str=""
1.upto(size) do |n|
str+=arr[rand(arr.size)].to_s
end
return str.upcase
end


Thats all

]]> By: Captcha in Ruby on Rails - Customize the use of captcha in the plugin validates_captcha at EXPRESSICA http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-527 Captcha in Ruby on Rails - Customize the use of captcha in the plugin validates_captcha at EXPRESSICA Wed, 31 Jan 2007 09:01:20 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-527 [...] However image is too noisy and it contains repeated strings. To improve the quality of images generated by the plugin validates_captcha visit Here. [...] [...] However image is too noisy and it contains repeated strings. To improve the quality of images generated by the plugin validates_captcha visit Here. [...]

]]> By: Stabilo http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-167 Stabilo Mon, 01 Jan 2007 17:14:33 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-167 Got the same error as Dirk from above ( `const_missing’: uninitialized constant CaptchaConfig (NameError)) Any ideas? Seems to be some namespace problem Regards Stabilo Got the same error as Dirk from above ( `const_missing’: uninitialized constant CaptchaConfig (NameError))

Any ideas? Seems to be some namespace problem

Regards

Stabilo

]]> By: Matt http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-147 Matt Fri, 15 Dec 2006 15:34:29 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-147 Could you send <a href="mailto://matt@techiesalumni.com" rel="nofollow">me</a> the code? Could you send me the code?

]]> By: Chintan Shah http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-138 Chintan Shah Wed, 13 Dec 2006 15:07:40 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-138 Hi Sur, i m in big problem, u have to help me at any how? check yr captcha code with the mongrel? it creates big problems so pls reply me soon i m waiting for reply it gives me an error like "pid......." and when i tried to run the method which contains the captcha code it just displays as blank page and when i go for the page source it showm me blank there also, and it also clear the clusters of the mongrel, from there mongrel will be stoped so when i tried to go some where else it gives me an error of 503.... so pls help me as soon as possible. bye and thnx Hi Sur,

i m in big problem, u have to help me at any how? check yr captcha code with the mongrel? it creates big problems so pls reply me soon i m waiting for reply

it gives me an error like “pid…….” and when i tried to run the method which contains the captcha code it just displays as blank page and when i go for the page source it showm me blank there also, and it also clear the clusters of the mongrel, from there mongrel will be stoped so when i tried to go some where else it gives me an error of 503…. so pls help me as soon as possible.

bye and thnx

]]> By: Sur Max http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-135 Sur Max Wed, 13 Dec 2006 12:09:35 +0000 http://ajaxonrails.wordpress.com/2006/10/17/how-to-improve-the-image-quality-and-generate-random-string-image-in-the-plugin-validates_captcha/#comment-135 Yes u didnt get it !! lol ... The words written now are only text in the modified code and not being used anywhere, i am wandering if you are still getting the repeated words and not random string... probably u havnt restarted the server or u have not implemented it and just looking at code only ... Yes u didnt get it !! lol …
The words written now are only text in the modified code and not being used anywhere, i am wandering if you are still getting the repeated words and not random string… probably u havnt restarted the server or u have not implemented it and just looking at code only …

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