e x p r e s s i c a

thanks for your great work.. but it looks like there’s a bug

i have 5 migrations in my db/migrate/ dir:
005_create_chemicals.rb 008_create_dangerclasses.rb 010_create_units.rb 012_create_categories.rb 014_hersteller.rb
007_create_orders.rb 009_create_deliver_adresses.rb 011_create_prices.rb 013_create_users.rb

after i run rake simple_captcha:setup i have those files:
005_create_chemicals.rb 008_create_dangerclasses.rb 010_create_units.rb 012_create_categories.rb 014_hersteller.rb
007_create_orders.rb 009_create_deliver_adresses.rb 011_create_prices.rb 013_create_users.rb 015_create_simple_captcha_data.rb

when i try to run rake db:migrate i received an error in 014_hersteller.rb, so i looked at this file… and this is whats in the file:
# Copyright (c) 2007 [Sur http://expressica.com

class CreateSimpleCaptchaData 40
t.string :value, :limit => 6
t.timestamps
end
end

def self.down
drop_table :simple_captcha_data
end
end

it looks like your simple_captcha overwrites the last migration in the dir

no, there are not 5 migrations, there are 9 *g*
after the rake simple_captcha:setup there are 10
but i think there should be 11?

Hi Oli,

Thanks for pointing that out.
I’ve fixed the bug and updated the SVN repository. You can check out the latest code and try it now.
Now it will specifically look for the added migration with the name “create_simple_captcha_data.rb” but not the last file.

Thanks.

Hi

I get this error when i try to load my form:

“A copy of AuthenticatedSystem has been removed from the module tree but is still active!”

I have RESTful Authentication installed…

???

PJ.

PJ,

How does that related to Simple Captcha ?

In Rails 1.2.6, when I run rake simple_cpatcha:setup it gives this error message:

uninitialized constant Rails::Initializer::RAILS_GEM_VERSION

How can I fix this?

Hi Zigmond,

That might be the problem in the environment.rb i.e. RAILS_GEM_VERSION = ‘X.X.X’ might be commented out.
But again as this can be the case for others as well… I have changed the way to setup the plugin, making it more generic and independent of the platform(Linux, Mac and Windows) as well. Because on Windows, I noticed that the command “rake db:migrate” is not responding from a ruby program.

I’ve updated the post showing how to setup the plugin for different versions of rails. Have a look to the section “Setup” in the post above, this will solve your issue.

Thanks.

sur,

…when i installed Simple_Captcha and put in the form view page and modified the controller action accordingly (as per the instructions on your website and in the readme file) - that is the error that i get! :

“A copy of AuthenticatedSystem has been removed from the module tree but is still active!”

The funny thing is that even when i removed the changes i made, i kept on getting that error in other places in my website relating to logging in / editing / submitting forms etc…

So, it appeared that the plugin had changed something. Only when i unsinstalled Simple_Captcha did everything get back to normal….

I am using rails 1.2.5…

PJ.

If a site uses its own images, gather a few CAPTCHA examples until all letters have been shown, save all the image files referenced, make a list of their letters, and then happily pass any test in an automated fashion?

Or is there more to this CAPTCHA implementation?

Thanks!

Stephan

UPDATE
The plugin has been updated to provide the eight different styles of images by usging RMagick.

Thanks, I want to know how to refresh the code image via a ajax “click”.

$(”simple_captcha_image”).innerHTML=”";

Hi Kengi,

Its a feature in a queue for the release of version 2.0

RMagick still required?

According to the title at http://expressica.com/2007/03/23/simple_captcha_1_0/

“No Pre-Requisites
RMagick Removed
FileSystem Usage Removed
Works Perfectly with Multiple Clustered Servers”

I am confused.

@kai

Please refer http://expressica.com/2008/01/07/simple-captcha-update-2/

I had the same problem as PJ, above:

Sometimes I get the error:

“A copy of AuthenticatedSystem has been removed from the module tree but is still active!”

when loading any page on my site that requires authentication. I started getting this error immediately after I installed simple_captcha. I solved it by modifying the bottom of simple_captcha_action_controller.rb like so:

ApplicationController.module_eval do
include SimpleCaptcha::ControllerHelpers
unloadable
end

Works for me. I am using Rails 1.2.6 and RESTful authentication.

Hi Smooth,

Thanks for pointing that out.

Though I am not facing this problem, PJ if you can try this with the latest code and if it will solve your problem, I can add that in the repository.

Thanks!

Hi Sur Max,

Thanks for the plugin.
The plugin works in the single shot!!

I haven’t seen simpler implementation of the captcha anywhere else.

Hi Sur,

If you say No RMagick dependency, why do you mention in the Pre-Requisites that RMagick must be installed. I have uninstalled RMagick and I’m using MiniMagick coz RMagick eats into my memory and I’m not going to have tat ruin my production servers.
This is from one of your comments earlier:

“sur said: On 12/21/2007 at 7:10 pm
Update: SimpleCaptcha 1.2.0 is up!!

Major Changes…
No Pre-Requisites
RMagick Removed
FileSystem Usage Removed
Works Perfectly with Multiple Clustered Servers”

Just read your comments put on Jan 7th on why you had to put back the RMagick plugin, I would like to know if I would be able to use this plugin using MiniMagick and if so, what changed would I have to do.

Thanks,

smooth, thanks for the tip, i will try that and see if it works….

will post back.

PJ.

@James
I haven’t tried the MiniMagick, If you can explore that and make a generic change to switch between the RMagick & MiniMagick while setting up the plugin.. I would be able to incorporate that in the plugin.

@PJ
Please mind it to pick the latest code from the repository before trying that out. It uses RMagick and provides various image styles.

Very nice, worked out of the box! Thanks (Rails 2.0.2, Debian/Lenny)

Hi,

I am having a problem using the new version of the plugin. I am running Rails 1.1.6. I am also using Engines , specifically the User, Login, and Roles engines.

When I install the plugin and try and start the server I get this error :

script/server
=> Booting WEBrick…
./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:100:in `const_missing’: uninitialized constant UserEngine (NameError)
from ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:131:in `const_missing’
from ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:133:in `send’
from ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:133:in `const_missing’
from ./script/../config/../app/controllers/application.rb:11
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `gem_original_require’
from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:27:in `require’
from ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:147:in `require’
from ./script/../config/../vendor/plugins/simple_captcha/lib/simple_captcha_action_controller.rb:3
… 20 levels…
from ./script/../config/../vendor/rails/activesupport/lib/active_support/dependencies.rb:147:in `require’
from ./script/../config/../vendor/rails/railties/lib/commands/server.rb:30
from script/server:3:in `require’
from script/server:3

The two lines it is complaining on are :

1) require ‘application’ in simple_captcha_action_controller
2) include UserEngine in my application.rb file

Does anyone have any pointers to how I can fix this ?

Thanks.

Hamza

simple captcha is not working IMGAGE CODE AND ENTERED KEYS ARE NOT EQUAL. I HAVE FOLLOW STEPS AS SHOWN IN THE WEBSITE, IT SHOWING THE ERROR IMGAE AND TEXT WERE DIFFERENT.

@Hamza
Thats might be because Engine has not been loaded before the plugin. Anyhow, I have removed the line require ‘application’ from the code and made it the other way to use the ApplicationController and updated the repositroy. You can re-checkout the plugin!

@anurag
The message simply shows you are entering the wrong characters!

Hi,

I had the same problem of PJ “A copy of AuthenticatedSystem has been removed from the module tree but is still active!” so i modified the file “simple_captcha_action_controller.rb” with this

“ApplicationController.module_eval do
include SimpleCaptcha::ControllerHelpers
#added this line
unloadable
end

That fixed the problem but now i’m getting:

“NoMethodError (undefined method `simple_captcha_valid?’ for #):

Any idea?

Thanks for you help,

Stephane

I was getting the error “A copy of ApplicationHelper has been removed from the module tree but is still active” after installing 1.2.2 of this plugin. I was able to eliminate it by having simple_capcha refer to ActiveController::Base instead of ApplicationController. Don’t know if that’s a good approach but it seems like it’s working for us. Here’s the change:

jjb@Macintosh:~/eng/svn/ic/trunk:0>svn diff vendor/plugins/simple_captcha/
Index: vendor/plugins/simple_captcha/lib/simple_captcha_controller.rb
===================================================================
— vendor/plugins/simple_captcha/lib/simple_captcha_controller.rb (revision 711)
+++ vendor/plugins/simple_captcha/lib/simple_captcha_controller.rb (working copy)
@@ -1,6 +1,6 @@
# Copyright (c) 2008 [Sur http://expressica.com

-class SimpleCaptchaController

@jjb

Yeah, that will work but, the problem is that it will not be compatible with all older rails versions and I am trying to make it as generic as possible to be used from 1.1.6 to all the latest ones.

I have just updated the repository with the SVN revision 24 with fixing this issue also keeping the support for previous versions of rails, also a small new feature is added — the last feature in the list of features mentioned above in the post.

Update :

Version 1.2.4 is up!! Checkout/Download the latest code.

Repository will keeps on moving until the version 2.0.

New Upcoming features for 2.0…
1) Ajax based refresh(this feature is waiting since very to be incorporated)
2) Option to select the captcha code from alphabets, numerals or mix
3) Image Background effects.

Stay Tuned!!

Sorry that post got cut off. I’ve posted the full info at http://www.jjbarrett.net/archives/problems-with-simple_captcha-in-rails-20

Just an update,

I installed the latest svn checkout of Simple Captcha today, running Rails 1.2.6, and Restful Authentication.

I made the change suggested by smooth, but having the same problems.

PJ.

Thanks for a simple, elegant & excellent solution and i like it
but i have tow questions with it:
1. how to refresh the code image via a ajax?
2. how to display number only in the code image?
i much needed these feature, and hope for your help
thanks very much~

i’m sorry,i don’t see Version 1.2.4 update when answer above question.
it’s very helpful for me, thanks very much~

@In7

The first point is in the list of features that will be incorporated by the version 2.0.
After getting your email, I have also added a feature related to your point 2. Here is the list.

For the time being you can modify it this way to get it working…

1) Ajax refresh is not just a tweak but a proper set of functions and needs to be tested for many rails’ versions, so I can not provide any help on that before 2.0

2) To have the numerals instead of alphabets change the line #104 in the file(from the latest code) vendor/plugins/simple_captcha/lib/simple_captcha_action_view.rb to this…
6.times{value << (48 + rand(10)).chr}

Although everything works fine, I see this in my log file:
SimpleCaptchaController: missing default helper path simple_captcha_helper

Has anybody encountered the same error?

Thanks.

Today we updated the plugin and our application stopped working.
We have concluded that the error was that in simple_captcha_action_controller.rb you define ApplicationController and our application took that ApplicationController instead the one defined in app/controller so it did not find any other method.

I have a problem with the rail version. When I try to do the “rake” the simple_captcha it says:

can’t activate rails (= 2.0.2), already activated rails-1.2.5] (Gem:Exception)
.
.
.
#

it brakes html compatibility (XHTML 1.0) by not putting the stylesheet into the head of the page but into its body. How about making a separate stylesheet file to include in the head?

Sur, one issue, my rails is 2.0.2, after svn up to 1.2.4
my app/controllers/application.rb be ignored,
I found the problem is the lib/simple_captcha_action_controller.rb

class ApplicationController

and one suggestion , pl’z let the img height , font size/left/top be some parameters.
now in my case , the font align to bottom, no middle.
I use your plugin via svn:externals, so I don’t want fix your code/css under vender.

thanks

UPDATE:

The class ApplicationController’s definition has been removed from the plugin thus it will not interfere with other plugins.

Latest Revision: 26

I have problems with Simple Captcha in Opera, “redirect_to” in controller doesnt change image:

if simple_captcha_valid?
flash[:warning] = “Correct”
….

else
flash[:warning] = “Błędny kod”
redirect_to :action => ‘register’

return
end

After setup, I was able to see the captcha generated. But during simple_captcha_valid? call, I get a SystemStackError. Below is the stack trace. Please let me know if you know what is happening.

SystemStackError (stack level too deep):
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract_adapter.rb:122:in `log_info’
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:71:in `cache_sql’
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/connection_adapters/abstract/query_cache.rb:53:in `select_all’
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:532:in `find_by_sql’
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:1233:in `find_every’
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:503:in `find’
C:/ruby/lib/ruby/gems/1.8/gems/activerecord-2.0.2/lib/active_record/base.rb:695:in `destroy_all’
/vendor/plugins/simple_captcha/lib/simple_captcha_data.rb:22:in `clear_old_data’
/vendor/plugins/simple_captcha/lib/simple_captcha_data.rb:8:in `get_data’
/vendor/plugins/simple_captcha/lib/simple_captcha_config.rb:19:in `simple_captcha_value’
/vendor/plugins/simple_captcha/lib/simple_captcha_action_controller.rb:24:in `simple_captcha_valid?’

Glad you decided to move rmagick back into the plugin.

One request: would it be possible to store the captcha answer as an encrypted string in a hidden form tag next to the captcha, rather than using the database? Users could define their own encryption key.

Keep up the good work!

Hi Sur,
i ‘m going to use your great plugin for my app, but i don’t why i get the following error when I try to do step 2: /rails/myapp/rake db:migrate

This error appears:
== CreateSimpleCaptchaData: migrating =========================================
– create_table(:simple_captcha_data)
rake aborted!
undefined method `string’ for #

(See full trace by running task with –trace)

Thx a lot

Matz

sur,

I tried revision 26, it is working perfectly for me now!!!
This is on Rails 1.2.6 and with RESTful Authentication.

Just one thing, when i start my development server i get the following message:

“SimpleCaptchaController: missing default helper path simple_captcha_helper”

Everything works fine, but i still get that message…

PJ.

@matz,

What version of Rails you are using, for rails < 2.0 you must use simple_captcha:setup_old in the first step.

@Stephane,

check out the latest revision of the plugin, the issue has been resolved.

@Jeremy,

I appreciate your suggestion. In one of the previous versions I was doing something near to that what you suggested, but found it might be possible to hack that logic. Currently this captcha is no way hackable.

Was wondering if someone can get the set of 10-20 hashes and the code, might be able to resolve the hash logic! Still, this point needs a lot of discussion.

But, yeah I am considering your suggestion for the version 2.0.

Thanks.

@qq

I have noted down the point. Will look into this issue.

Thanks.

@desare,

I checked in Opera, and found that its not refreshing the images properly. I have noted the issue for the version 2.0

Thanks.

@kengi,

the issue has been fixed and the definition of the ApplicationController has been removed from the plugin.

@torsten,

If you have read this post properly, I have explicitly mentioned where is the CSS for the DOM objects of plugin resides.

@barraorion,

the issue has been fixed in the latest revision.

Hi sur,
Is it possible to add mini magick support, just like attachment_fu ( http://svn.techno-weenie.net/projects/plugins/attachment_fu/ ) ?

Had a problem implementing this. My rails version was 2.0.2 (ActiveRecord 1.15.6) but when I migrated I got the following error:

rake aborted!
undefined method `string’ for #
./db/migrate//010_create_simple_captcha_data.rb:6:in `real_up’

followed by a similar error to do with “t.timestamps”. I changed the migration file to:
t.column “key”, :string, :limit => 40
t.column “value”, :string, :limit => 6
t.column :”created_at”, :datetime
t.column :”updated_at”, :datetime

from the t.string and t.timestamps entries, and it appears to have worked.

No idea why it didn’t as the methods are supposed to be in Rails 2. I suspect this is a bug in Rails, or more specifically my webhost’s installation of rails, so I’m posting the fix here more for the benefit of others in my position than as a bug in simplecaptcha.

After installing i got the following error when trying to see my view file

Status: 500 Internal Server Error Content-Type: text/html

We’re sorry, but something went wrong.

We’ve been notified about this issue and we’ll take a look at it shortly.

Please suggest me if any one kind on me

UPDATE

New feature added. The helper method show_simple_captcha accepts the option :code_type which can be set to either ‘alphabetic’ or ‘numeric’.

i wants work on simple captchas for earn money if you have work this type plese give me and i will work good

thank you

Hi this really made my job simple…Thanks a lot for this simple n detailed description

UPDATE

Opera’s image refresh problem fixed.

Thanks for the great plugin! Just a quick question (Not sure if this has already been answered). Is it possible to refresh the captcha image by means of an AJAX call? When I tried to do this (that is, by having an Ajax call render a partial which calls the show_simple_captcha function) the database does get updated with the new captcha, but the image is not refreshed. Can someone help me out?

Thanks.

@arlen
You are getting this error because you have only updated Rails gem… but I can see the old ActiveRecord gem you are mentioning. With this gem you can not leverage the new Rails2.0 features.

@milind
I appreciate your thoughts for offering your services. But this is a small open source project to be used in my projects and I simply shared it that everyone can use it. I do not have any thoughts of get it done by outsourcing.

@Preethi,
The feature of Ajax refresh has already been mentioned as a part of the upcoming SimpleCaptcha-2.0 but at the moment its not there.
Meanwhile I noticed that Kusakari has implemented the ajax refresh feature here (thanks Kusakari). Although I haven’t tried and tested it, you can try that out.

The feature will soon be available in the plugin but somehow somewhat in different format.

Thanks All for the patience.

@Sur

Thanks for the reply. Managed to get a slightly different version of Ajax implemented. Also, I’m developing on Windows, so for RMagick, I downloaded the RMagick+ImageMagick bundled version, and it works absolutely fine with Windows. I’m just wondering if it’ll work on Linux once it’s deployed. I have no idea why it will or it will not work, but I just want to get this clarified. It at all it will not work, can you tell me what Rmagick and ImageMagick packages I should install to get it working on any OS?

Thanks.

Essentially, I want to include RMagick and ImageMagick plugins with my project.

Okie. Figured it out myself:D I’m loving all of this stuff!

This plugin is working brilliantly on Windows but on my Mac and on my Ubuntu server, the captcha images are show up as blank. Anybody know why this is happening?

@Ben,

two probable reasons…
1) RMagick not properly installed… Make sure if RMagick is properly working.
2) Missing Arial font… If you do not have the arial font, you can install it and try again if it works.

Also, I have taken this point towards the version 2.0, I will bundle the font and also provide option to set the custom font.

Sur,

Thanks a ton ! for your valuable contribution. I found the same problem
as @arlen and fixed it by replacing the timestamp column name with
updated_at. I didn’t need to create a created_at column. Let me know,
if I have to ?, I don’t think your plug-in needs it for rails > 2.0.

Here is the log for missing updated_at column ..


ActiveRecord::StatementInvalid (Mysql::Error: Unknown column 'updated_at' in 'where clause': SELECT * FROM `simple_captcha_data` WHERE (updated_at

sur,

I commend you on this great work. I, however, unlike others, was not fortunate enough to have a smooth implementation. My challenge now is to pass beyond the following error message (whenever I try to launch my ..login/sign_up action):

uninitialized constant SimpleCaptcha::ControllerHelpers::ConfigTasks

this message appears when I use the controller based authentication method.

As a separate note, applying the

include SimpleCaptcha::ControllerHelpers

in the Application.rb file is a disaster>>> it leads to the 505 error message!

Please advise

rgs

Sur,

I have to add that, after a frustrating night with the include call in the application.rb, I applied a require call instead from the controller as follows

require ‘/vendor/plugins/simple_captcha/lib/simple_captcha_action_controller.rb’

and that’s when the ‘uninitialized constant…’ error message appeared.

Now, after I shifted the ‘include SimpleCaptcha::ControllerHelpers’ to the controller itself I started receiving the following error message

undefined method `simple_captcha_valid?’ for #

What am I doing wrong?

please advise

rgs,

Sur,

Last and lease (I hope!), I rebooted my server, and refreshed the …/login/sign_up action>>> yet another error message appeared

uninitialized constant LoginController::SimpleCaptcha

Is this enough for one day of confusion or what!

rgs,

@Nabil,

I must say thats quite a wrong way to proceed.

Just follow the steps I mentioned, to setup and then to use. Remove any extra include/require what you made in application.rb, restart the server now… and see!

Hello Sur,

Works great on my development machine, but the image on the joyent accelerator is a little blob on the left side.

I have the following versions of image_magick and rmagick:

Version: ImageMagick 6.2.9 09/22/06 Q16 http://www.imagemagick.org

rmagick (1.15.5)

It is possible that one or both needs to be upgraded.

Any thoughts?

Many thanks in advance!

I have a doubt this showing captcha in Upper case no , so if some one enterd small letters it wont work na , how can i make it always upper using upcase function in ruby , so where should i add this code ??

Just wanted to say thanks!! The plugin works perfectly for what Iam doing. My home env is Windows with instant rails (took a little work to get it running) and a Linux production environment. I will be able to using it for a comments tool I am developing as well as a registation tool!!! Great add to the community. Will be sure to link back to you in my blog about it!!

Brian Bruijn

Thanks Brian.