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• Has test driven development (TDD) actually benefited a real world project?

  - by James

  I am not new to coding. I have been coding (seriously) for over 15 years now. I have always had some testing for my code. However, over the last few months I have been learning test driven design/development (TDD) using Ruby on Rails. So far, I'm not seeing the benefit. I see some benefit to writing tests for some things, but very few. And while I like the idea of writing the test first, I find I spend substantially more time trying to debug my tests to get them to say what I really mean than I do debugging actual code. This is probably because the test code is often substantially more complicated than the code it tests. I hope this is just inexperience with the available tools (RSpec in this case). I must say though, at this point, the level of frustration mixed with the disappointing lack of performance is beyond unacceptable. So far, the only value I'm seeing from TDD is a growing library of RSpec files that serve as templates for other projects/files. Which is not much more useful, maybe less useful, than the actual project code files. In reading the available literature, I notice that TDD seems to be a massive time sink up front, but pays off in the end. I'm just wondering, are there any real world examples? Does this massive frustration ever pay off in the real world? I really hope I did not miss this question somewhere else on here. I searched, but all the questions/answers are several years old at this point. It was a rare occasion when I found a developer who would say anything bad about TDD, which is why I have spent as much time on this as I have. However, I noticed that nobody seems to point to specific real-world examples. I did read one answer that said the guy debugging the code in 2011 would thank you for have a complete unit testing suite (I think that comment was made in 2008). So, I'm just wondering, after all these years, do we finally have any examples showing the payoff is real? Has anybody actually inherited or gone back to code that was designed/developed with TDD and has a complete set of unit tests and actually felt a payoff? Or did you find that you were spending so much time trying to figure out what the test was testing (and why it was important) that you just tossed out the whole mess and dug into the code?

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• Getting my younger brother started on programming

  - by SmartLemon

  My younger brother is 13 years old, I started programming when I started to develop Android applications when I was 15, last year my brother gained an interest in it and he would always pestering me about letting him make something himself, so I wrote him a few tutorials and he built himself a small application that had a few buttons that did something, I think you put in your dob and it would tell you what day you were born on, he took a couple of days building up to his final application, maybe even a week, learning everything he needed. Since then he hasn't really done much more because I have been engulfed in work and such where I have my own programming problems to sort out. I told him that when he was my age (I am 17) that he should be better then me, he was a bit sceptical about this however. I dont think he has as much logical reasoning as I would think he needs to solve more complex problems, but shouldnt that just develop over time as it did with me? He has been pestering me for the past week or something to write him more tutorials, but I didn't have time. All I had with me was a playlist I had downloaded from the new boston from youtube for C++, it's about 73 videos. He is currently about 20-30 videos in, he has come to ask me a few questions about it and thats it. Should I have really properly started him with C++? Should I stop him now and start him again on python or ruby? I know that C++ shouldn't really be a beginners language, especially for someone who is only 13, by the time this question is answered will probably be up to learning about inheritance or something. Some people may see this as not a real question, but it is, and should be used as a reference for others. I want to know, should I start him on a different language whch is more easy? What language then? And would it be better for me to teach him myself (I would make time) or just continue him with the new boston? There are a few more questions throughout this question but these are the main ones. Part of the question people seem to be neglecting is me asking whether I should change what language he is learning to another, or since he is already pretty far through the tutorials should I just leave him with C++ and he can learn the other languages freely by himself?

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• Is the Observer pattern adequate for this kind of scenario?

  - by Omega

  I'm creating a simple game development framework with Ruby. There is a node system. A node is a game entity, and it has position. It can have children nodes (and one parent node). Children are always drawn relatively to their parent. Nodes have a @position field. Anyone can modify it. When such position is modified, the node must update its children accordingly to properly draw them relatively to it. @position contains a Point instance (a class with x and y properties, plus some other useful methods). I need to know when a node's @position's state changes, so I can tell the node to update its children. This is easy if the programmer does something like this: @node.position = Point.new(300,300) Because it is equivalent to calling this: # Code in the Node class def position=(newValue) @position = newValue update_my_children # <--- I know that the position changed end But, I'm lost when this happens: @node.position.x = 300 The only one that knows that the position changed is the Point instance stored in the @position property of the node. But I need the node to be notified! It was at this point that I considered the Observer pattern. Basically, Point is now observable. When a node's position property is given a new Point instance (through the assignment operator), it will stop observing the previous Point it had (if any), and start observing the new one. When a Point instance gets a state change, all observers (the node owning it) will be notified, so now my node can update its children when the position changes. A problem is when this happens: @someNode.position = @anotherNode.position This means that two nodes are observing the same point. If I change one of the node's position, the other would change as well. To fix this, when a position is assigned, I plan to create a new Point instance, copy the passed argument's x and y, and store my newly created point instead of storing the passed one. Another problem I fear is this: somePoint = @node.position somePoint.x = 500 This would, technically, modify @node's position. I'm not sure if anyone would be expecting that behavior. I'm under the impression that people see Point as some kind of primitive rather than an actual object. Is this approach even reasonable? Reasons I'm feeling skeptical: I've heard that the Observer pattern should be used with, well, many observers. Technically, in this scenario there is only one observer at a time. When assigning a node's position as another's (@someNode.position = @anotherNode.position), where I create a whole new instance rather than storing the passed point, it feels hackish, or even inefficient.

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• Can't open cocoa emacs from terminal using open -a

  - by Shane

  I installed emacs on my MacBook Air running Mac OS X 10.6.5 from this site http://emacsformacosx.com/. I believe this is what used to be called cocoa emacs. I dragged it into my Application folder and it works fine when I run it from there. I want to be able to run it from the Terminal. After some googling, I tried open -a /Application/Emacs.app foo.txt (foo.txt was and existing file). I got two emacs windows - one with welcome screen and one with foo.txt loaded. I tried a few applications in the /Applications directory and they did not seem to behave like this. I had installed it using my own account (an admin account) so after doing ls -l on /Application I noticed that the owner and group were different from the other entries in this folder. I recursively changed the owner and group to root and wheel, like the others, but this did not help. The only thing that looks funny now is that there that ls -l show a @ character which has something to do with extended attributes but I don't know how to check these. Any suggestions on what to check next? Is using the open command the only to run the program? Can I simulate what it does using a shell script?

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• Can't open cocoa emacs from terminal using open -a

  - by Shane

  I installed emacs on my macbook air running os x 10.6.5 from this site http://emacsformacosx.com/. I believe this is what used to be called cocoa emacs. I dragged it into my Application folder and it works fine when i run it from there. I want to be able to run it from terminal. After some googling, i tried open -a /Application/Emacs.app foo.txt (foo.txt was and existing file). I got two emacs windows - one with welcome screen and one with foo.txt loaded. I tried a few applications in the /Applications directory and they did not seem to behave like this. I had installed it using my own account (an admin account) so after doing ls -l on /Application I noticed that the owner and group were different from the other entries in this folder. I recursively changed the owner and group to root and wheel, like the others, but this did not help. The only thing that looks funny now is that there that ls -l show a @ character which has something to do with extended attributes but i don't know how to check these. Any suggestions on what to check next? Is using the open command the only to run the program? Can I simulate what it does using a shell script?

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• Key Value Observation (ala Cocoa) in GWT ?

  - by user179997

  Hi all, There are these 2 frameworks out there in the same "cloud application" space as GWT: Sproutcore and Cappuccino. Cappuccino is Cocoa for the web, Sproutcore is Cocoa-like and one very central idea in both is Key Value Observation where the framework itself provides the glue to change all dependencies of an object when it changes, and you only have to declare those dependencies. If that was too poorly expressed please see this presentation: http://www.infoq.com/presentations/subelsky-sproutcore-intro Since the pattern reduces the amount of code you type it reduces the number of bugs. Maybe it's too much to ask but I would like to have that and all the benefits of Eclipse/compiler that come with GWT. Is there support for this in GWT, or a library already developed? Or maybe there is support in some of the component libraries for GWT out there? Thanks

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• How to use Sprockets Rails plugin on Heroku?

  - by Kevin

  Hi, I just deployed my Rails app to Heroku, but the Javascripts that were using Sprockets plugin don't work. I understood that, because my Heroku app is read-only, Sprockets won't work. I've found this sprockets_on_heroku plugin that should do the work, but I don't really get how to use it : I added config.gem sprockets in config/environment.rb I added sprockets in my .gems file I pushed these on Heroku and Sprockets was successfully installed I locally ran script/plugin install git://github.com/jeffrydegrande/sprockets_on_heroku.git and the plugin was successfully installed Nothing changed on Heroku, so I tried to install the plugin on Heroku with heroku plugins:install git://github.com/jeffrydegrande/sprockets_on_heroku.git, which returned sprockets_on_heroku installedbut then, a heroku restartor a heroku pluginscommand would return this: ~/.heroku/plugins/sprockets_on_heroku/init.rb:1: uninitialized constant ActionController (NameError) from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:25:in `load' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:25:in `load!' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:22:in `each' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/plugin.rb:22:in `load!' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/../lib/heroku/command.rb:14:in `run' from /opt/local/lib/ruby/gems/1.8/gems/heroku-1.8.3/bin/heroku:14 from /opt/local/bin/heroku:19:in `load' from /opt/local/bin/heroku:19 What should I do? Kevin

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• Heroku and Refinerycms: Application failed to start ~ attachment_fu problem

  - by John Deely

  Ok so I'm trying to get Refinerycms working with Heroku, and I'm new at all of this. I've set up an amazon s3 account and added keys and ids to the amazon_s3.yml files. When launched on Heroku at gart.heroku.com I get the following error: App failed to start /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/backends/s3_backend.rb:187:in read': No such file or directory - /disk1/home/slugs/141557_e8490b3_d5eb/mnt/config/amazon_s3.yml (Errno::ENOENT) from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/backends/s3_backend.rb:187:inincluded' from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu.rb:123:in include' from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu.rb:123:inhas_attachment' from /disk1/home/slugs/141557_e8490b3_d5eb/mnt/app/models/image.rb:13 from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require' from /usr/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:158:in require' from /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:265:inrequire_or_load' ... 42 levels... from /usr/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/builder.rb:29:in instance_eval' from /usr/local/lib/ruby/gems/1.8/gems/rack-1.0.1/lib/rack/builder.rb:29:ininitialize' from /home/heroku_rack/heroku.ru:1:in `new' from /home/heroku_rack/heroku.ru:1 The s3_backend.rb line 187 contains: @@s3_config = @@s3_config = YAML.load(ERB.new(File.read(@@s3_config_path)).result)[RAILS_ENV].symbolize_keys Any help would be great!

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• Problem with RVM and gem that has an executable

  - by djhworld

  Hi there, I've recently made the plunge to use RVM on Ubuntu. Everything seems to have gone swimmingly...except for one thing. I'm in the process of developing a gem of mine that has a script placed within its own bin/ directory, all of the gemspec and things were generated by Jeweler. The bin/mygem file contains the following code: - #!/usr/bin/env ruby begin require 'mygem' rescue LoadError require 'rubygems' require 'mygem' end app = MyGem::Application.new app.run That was working fine on the system version of Ruby. Now...recently I've moved to RVM to manage my ruby versions a bit better, except now my gem doesn't appear to be working. Firstly I do this: - rvm 1.9.2 Then I do this: - rvm 1.9.2 gem install mygem Which installs fine, except...when I try to run the command for mygem mygem I just get the following exception: - daniel@daniel-VirtualBox:~$ mygem <internal:lib/rubygems/custom_require>:29:in `require': no such file to load -- mygem (LoadError) from <internal:lib/rubygems/custom_require>:29:in `require' from /home/daniel/.rvm/gems/ruby-1.9.2-p136/gems/mygem-0.1.4/bin/mygem:2:in `<top (required)>' from /home/daniel/.rvm/gems/ruby-1.9.2-p136/bin/mygem:19:in `load' from /home/daniel/.rvm/gems/ruby-1.9.2-p136/bin/mygem:19:in `<main>'mygem NOTE: I have a similar RVM setup on MAC OSX and my gem works fine there so I think this might be something to do with Ubuntu?

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• rake task via cron problem loading rubygems

  - by Matenia Rossides

  I have managed to get a cron job to run a rake task by doing the following: cd /home/myusername/approotlocation/ && /usr/bin/rake sendnewsletter RAILS_ENV=development i have checked with which ruby and which rake to make sure the paths are correct (from bash) the job looks like it wants to run as i get the following email from the cron daemon when it completes Missing these required gems: chronic whenever searchlogic adzap-ar_mailer twitter gdata bitly ruby-recaptcha You're running: ruby 1.8.7.22 at /usr/bin/ruby rubygems 1.3.5 at /home/myusername/gems, /usr/lib/ruby/gems/1.8 Run `rake gems:install` to install the missing gems. (in /home/myusername/approotlocation) my custom rake file within lib/tasks is as follows: task :sendnewsletter => :environment do require 'rubygems' require 'chronic' require 'whenever' require 'searchlogic' require 'adzap-ar_mailer' require 'twitter' require 'gdata' require 'bitly' require 'ruby-recaptcha' @recipients = Subscription.all(:conditions => {:active => true}) for user in @recipients Email.send_later(:deliver_send_newsletter,user) end end with or without the require items, it still gives me the same error ... can anyone shed some light on this? or alternatively advise me on how to make a custom file within the script directory that will run this function (I already have a cron job working that will run and process all my delayed_jobs. Cheers!

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• Cannot generate/run migrations on rails 2.3.4

  - by Brian Roisentul

  I used to work with rails 2.3.2 before and then I decided to upgrade to version 2.3.4. Today I tried to generate a migration(I could do this fine with version 2.3.2) and I got the following error message: C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb:812:in `const_missing': uninitialized constant ActiveSupport (NameError) from D:/Proyectos/Cursometro/www/config/environment.rb:33 from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb:111:in `run' from D:/Proyectos/Cursometro/www/config/environment.rb:15 from D:/Proyectos/Cursometro/www/config/environment.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/commands/generate.rb:1 from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/commands/generate.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from script\generate:3 I don't know why this is happening. Everything worked fine in 2.3.2 and now it doesn't.

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• Cannot generate migrations on rails 2.3.4

  - by Brian Roisentul

  I used to work with rails 2.3.2 before and then I decided to upgrade to version 2.3.4. Today I tried to generate a migration(I could do this fine with version 2.3.2) and I got the following error message: C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb:812:in `const_missing': uninitialized constant ActiveSupport (NameError) from D:/Proyectos/Cursometro/www/config/environment.rb:33 from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/initializer.rb:111:in `run' from D:/Proyectos/Cursometro/www/config/environment.rb:15 from D:/Proyectos/Cursometro/www/config/environment.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/commands/generate.rb:1 from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/gems/1.8/gems/rails-2.3.4/lib/commands/generate.rb:31:in `require' from C:/Program Files (x86)/NetBeans 6.8/ruby2/jruby-1.4.0/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require' from script\generate:3 I don't know why this is happening. Everything worked fine in 2.3.2 and now it doesn't.

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• Can't deploy rails 4 app on Bluehost with Passenger 4 and nginx

  - by user2205763

  I am at Bluehost (dedicated server) trying to run a rails 4 app. I asked to have my server re-imaged, specifying that I do not want rails, ruby, or passenger install automatically as I wanted to install the latest versions myself using a version manager (Bluehost by default offers rails 2.3, ruby 1.8, and passenger 3, which won't work with my app). I installed ruby 1.9.3p327, rails 4.0.0, and passenger 4.0.5. I can verify this by typing, "ruby -v", "rails -v", and "passenger -v" (also "gem -v"). I made sure to install these not as root, so that I don't get a 403 forbidden error when trying to deploy the app. I installed passenger by typing "gem install passenger", and then installed the nginx passenger module (into "/nginx") with "passenger-install-nginx-module". I am trying to run my rails app on a subdomain, http://development.thegraduate.hk (I am using the subdomain to show my client progress on the website). In bluehost I created that subdomain, and had it point to "public_html/thegraduate". I then created a symlink from "rails_apps/thegraduate/public" to "public_html/thegraduate" and verified that the symlink exists. The problem is: when I go to http://development.thegraduate.hk, I get a directory listing. There is nothing resembling a rails app. I have not added a .htaccess file to /rails_apps/thegraduate/public, as that was never specified in the installation of passenger. It was meant to be 'install and go'. When I type "passenger-memory-status", I get 3 things: - Apache processes (7) - Nginx processes (0) - Passenger processes (0) So it appears that nginx and passenger are not running, and I can't figure out how to get it to run (I'm not looking to have it run as a standalone server). Here is my nginx.conf file (/nginx/conf/nginx.conf): #user nobody; worker_processes 1; #error_log logs/error.log; #error_log logs/error.log notice; #error_log logs/error.log info; #pid logs/nginx.pid; events { worker_connections 1024; } http { passenger_root /home/thegrad4/.rbenv/versions/1.9.3-p327/lib/ruby/gems/1.9.1/gems/passenger-4.0.5; passenger_ruby /home/thegrad4/.rbenv/versions/1.9.3-p327/bin/ruby; include mime.types; default_type application/octet-stream; #log_format main '$remote_addr - $remote_user [$time_local] "$request" ' # '$status $body_bytes_sent "$http_referer" ' # '"$http_user_agent" "$http_x_forwarded_for"'; #access_log logs/access.log main; sendfile on; #tcp_nopush on; #keepalive_timeout 0; keepalive_timeout 65; #gzip on; server { listen 80; server_name development.thegraduate.hk; root ~/rails_apps/thegraduate/public; passenger_enabled on; #charset koi8-r; #access_log logs/host.access.log main; location / { root html; index index.html index.htm; } #error_page 404 /404.html; # redirect server error pages to the static page /50x.html # error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } # proxy the PHP scripts to Apache listening on 127.0.0.1:80 # #location ~ \.php$ { # proxy_pass http://127.0.0.1; #} # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000 # #location ~ \.php$ { # root html; # fastcgi_pass 127.0.0.1:9000; # fastcgi_index index.php; # fastcgi_param SCRIPT_FILENAME /scripts$fastcgi_script_name; # include fastcgi_params; #} # deny access to .htaccess files, if Apache's document root # concurs with nginx's one # #location ~ /\.ht { # deny all; #} } # another virtual host using mix of IP-, name-, and port-based configuration # #server { # listen 8000; # listen somename:8080; # server_name somename alias another.alias; # location / { # root html; # index index.html index.htm; # } #} # HTTPS server # #server { # listen 443; # server_name localhost; # ssl on; # ssl_certificate cert.pem; # ssl_certificate_key cert.key; # ssl_session_timeout 5m; # ssl_protocols SSLv2 SSLv3 TLSv1; # ssl_ciphers HIGH:!aNULL:!MD5; # ssl_prefer_server_ciphers on; # location / { # root html; # index index.html index.htm; # } #} } I don't get any errors, just the directory listing. I've tried to be as detailed as possible. Any help on this issue would be greatly appreciated as I've been stumped for the past 3 days. Scouring the web has not helped as my issue seems to be specific to me. Thanks so much. If there are any potential details I forgot to specify, just ask. ** ADDITIONAL INFORMATION ** Going to development.thegraduate.hk/public/ will correctly display the index.html page in /rails_apps/thegraduate/public. However, changing root in the routes.rb file to "root = 'home#index'" does nothing.

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• Cannot to connect to a Cassandra DB from localhost

  - by DJYod

  Hello, I don't know if I'm on the right site, I installed OpenSolaris a single cassandra node, I don't have other node. On the same server, I install Ruby 1.8 with the gem Cassandra. If I try to connect from my computer to the Cassandra node through the ruby gem cassandra, I can connect perfectly, if I try to to the same from the ruby gem cassandra in the server, it says that there is no listening on 127.0.0.1. I can connect locally to the instance using telnet 127.0.0.1 9160 and it works... any idea? Thank you!

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• what does STOP service do in Windows?

  - by Radek

  I start my web server as web service on Windows XP. How it was done is described here My web server is coded in ruby/sinatra and I start it in .bat file. That file is used by the service too. Manually I stop the web server by pressing CTRL+C in the dos window. How can I stop the server now as it started via service? I found out that I can stop it via taskkill /f /t /im ruby.exe Is there any way I can use the MMC stop service function to stop the web server? runweb.bat c: cd C:\web ruby C:\web\web2.rb

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• Generating a twitter OAuth access key - the semi-manual way

  - by Piet

  [UPDATE] Apparently someone at Twitter was listening, or I’m going senile/blind. Let’s call it a combination of both. Instead of following all the steps below, you could just login with the Twitter account you want to use on http://dev.twitter.com, register your application and then click ‘Edit Details’ on the application overview page at http://dev.twitter.com/apps. Next click the ‘Application detail’ button on the right, followed by the ‘My Access Token’ button in order to get your Access Token and Access Token Secret. This makes the old post below rather obsolete. Clearly a case of me thinking everything is a nail and ruby is a hammer (don’t they usually say this about java coders?) [ORIGINAL POST] OAuth is great! OAuth allows your application to use your user’s data without the need to ask for their password. So Twitter made the API much safer for their and your users. Hurray! Free pizza for everyone! Unless of course you’re using the Twitter API for your own needs like running your own bot and don’t need access to other user’s data. In such cases a simple username/password combination is more than enough. I can understand however that the Twitter guys don’t really care that much about these exceptions(?). Most such uses for the API are probably rather spammy in nature. !!! If you have a twitter app that uses the API to access external user’s data: look for another solution. This solution is ONLY meant when you ONLY need access to your own account(s) through the API. Other Solutions Mr Dallas Devries posted a solution here which involves requesting and scraping a one-time PIN. But: I like to minimize the amount of calls I make to twitter’s API or pages to lessen my chances of meeting the fail whale. Also, as soon as the pin isn’t included in a div called ‘oauth_pin’ anymore, this will fail. However, mr Devries’ post was a starting point for my solution, so I’m much obliged to him posting his findings. Authenticating with the Twitter API: old vs new Acessing The Twitter API the old way: require ‘twitter’ httpauth = Twitter::HTTPAuth.new('my_account','my_secret_password') client = Twitter::Base.new(httpauth) client.update(‘Hurray!’) The OAuth way: require 'twitter' oauth = Twitter::OAuth.new('ve4whatafuzzksaMQKjoI', 'KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY') oauth.authorize_from_access('123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis', 'fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh') client = Twitter::Base.new(oauth) client.update(‘Hurray!’) In the above case, ve4whatafuzzksaMQKjoI is the ‘consumer key’ (sometimes also referred to as ‘consumer token’) and KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY is the ‘consumer secret’. You’ll get these from Twitter when you register your app. 123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis is the ‘access token’ and fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh is the ‘access secret’. This combination gives the registered application access to your account. I’ll show you how to obtain these by following the steps below. (Basically you’ll need a bunch of keys and you’ll have to jump a bit through hoops to obtain them for your server/bot. ) How to get these keys 1. Surf to the twitter apps registration page go to http://dev.twitter.com/apps to register your app. Login with your twitter account. 2. Register your application Enter something for Application name, Description, website,… as I said: they make you jump through hoops. If you plan on using the API to post tweets, Your application name and website will be used in the ‘5 minutes ago via…’ line below your tweet. You could use the this to point to a page with info about your bot, or maybe it’s useful for SEO purposes. For application type I choose ‘browser’ and entered http://www.hadermann.be/callback as a ‘Callback URL’. This url returns a 404 error, which is ideal because after giving our account access to our ‘application’ (step 6), it will redirect to this url with an ‘oauth_token’ and ‘oauth_verifier’ in the url. We need to get these from the url. It doesn’t really matter what you enter here though, you could leave it blank because you need to explicitely specify it when generating a request token. You probably want read&write access so set this at ‘Default Access type’. 3. Get your consumer key and consumer secret On the next page, copy/paste your ‘consumer key’ and ‘consumer secret’. You’ll need these later on. You also need these as part of the authentication in your script later on: oauth = Twitter::OAuth.new([consumer key], [consumer secret]) 4. Obtain your request token run the following in IRB to obtain your ‘request token’ Replace my fake consumer key and consumer secret with the one you obtained in step 3. And use something else instead http://www.hadermann.be/callback: although this will only give a 404, you shouldn’t trust me. irb(main):001:0> require 'oauth' irb(main):002:0> c = OAuth::Consumer.new('ve4whatafuzzksaMQKjoI', 'KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY', {:site => 'http://twitter.com'}) irb(main):003:0> request_token = c.get_request_token(:oauth_callback => 'http://www.hadermann.be/callback') irb(main):004:0> request_token.token => "UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1" This (UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1) is the request token: Copy/paste this token, you will need this next. 5. Authorize your application surf to https://api.twitter.com/oauth/authorize?oauth_token=[the above token], for example: https://api.twitter.com/oauth/authorize?oauth_token=UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1 This will bring you to the ‘An application would like to connect to your account’- screen on Twitter where you can grant access to the app you just registered. If you aren’t still logged in, you need to login first. Click ‘Allow’. Unless you don’t trust yourself. 6. Get your oauth_verifier from the redirected url Your browser will be redirected to your callback url, with an oauth_token and oauth_verifier parameter appended. You’ll need the oauth_verifier. In my case the browser redirected to: http://www.hadermann.be/callback?oauth_token=UrperqaukeWsWt3IAlfbxzyBUFpwWIcWkHP94QH2C1&oauth_verifier=waoOhKo8orpaqvQe6rVi5fti4ejr8hPeZrTewyeag Which returned a 404, giving me the chance to copy/paste my oauth_verifier: waoOhKo8orpaqvQe6rVi5fti4ejr8hPeZrTewyeag 7. Request an access token Back to irb, use the oauth_verifier to request an access token, as follows: irb(main):005:0> at = request_token.get_access_token(:oauth_verifier => 'waoOhKo8orpaqvQe6rVi5fti4ejr8hPeZrTewyeag') irb(main):006:0> at.params[:oauth_token] => "123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis" irb(main):007:0> at.params[:oauth_token_secret] => "fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh" We’re there! 123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis is the access token. fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh is the access secret. Try it! Try the following to post an update: require 'twitter' oauth = Twitter::OAuth.new('ve4whatafuzzksaMQKjoI', 'KliketyklikspQ6qYALcuNandsomemored8pQ6qYALIG7mbEQY') oauth.authorize_from_access('123-owhfmeyAgfozdyt5hDeprSevsWmPo5rVeroGfsthis', 'fGiinCdqtehMeehiddenymDeAsasaawgGeryye8amh') client = Twitter::Base.new(oauth) client.update(‘Cowabunga!’) Now you can go to your twitter page and delete the tweet if you want to.

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• Twitter traffic might not be what it seems

  - by Piet

  Are you using bit.ly stats to measure interest in the links you post on twitter? I’ve been hearing for a while about people claiming to get the majority of their traffic originating from twitter these days. Now, I’ve been playing with the twitter ruby gem recently, doing various experiments which I’ll not go into detail here because they could be regarded as spamming… if I’d conduct them on a large scale, that is. It’s scary to see people actually engaging with @replies crafted with some regular expressions and eliza-like trickery on status updates found using the twitter api. I’m wondering how Twitter is going to contain the coming spam-flood. When posting links I used bit.ly as url shortener, since this one seems to be the de-facto standard on twitter. A nice thing about bit.ly is that it shows some basic stats about the redirects it performs for your shortened links. To my surprise, most links posted almost immediately resulted in several visitors. Now, seeing that I was posting the links together with some information concerning what the link is about, I concluded that the people who were actually clicking the links should be very targeted visitors. This felt a bit like free adwords, and I suddenly started to understand why everyone was raving about getting traffic from twitter. How wrong I was! (and I think several 1000 online marketers with me) On the destination site I used a traffic logging solution that works by including a little javascript snippet in your pages. It seemed that somehow all visitors disappeared after the bit.ly redirect and before getting to the site, because I was hardly seeing any visitors there. So I started investigating what was happening: by looking at the logfiles of the destination site, and by making my own ’shortened’ urls by doing redirects using a very short domain name I own. This way, I could check the apache access_log before the redirects. Most user agents turned out to be bots without a doubt. Here’s an excerpt of user-agents awk’ed from apache’s access_log for a time period of about one hour, right after posting some links: AideRSS 2.0 (postrank.com) Java/1.6.0_13 Java/1.6.0_14 libwww-perl/5.816 MLBot (www.metadatalabs.com/mlbot) Mozilla/4.0 (compatible;MSIE 5.01; Windows -NT 5.0 - real-url.org) Mozilla/5.0 (compatible; Twitturls; +http://twitturls.com) Mozilla/5.0 (compatible; Viralheat Bot/1.0; +http://www.viralheat.com/) Mozilla/5.0 (Danger hiptop 4.6; U; rv:1.7.12) Gecko/20050920 Mozilla/5.0 (X11; U; Linux i686; en-us; rv:1.9.0.2) Gecko/2008092313 Ubuntu/9.04 (jaunty) Firefox/3.5 OpenCalaisSemanticProxy PycURL/7.18.2 PycURL/7.19.3 Python-urllib/1.17 Twingly Recon twitmatic Twitturly / v0.6 Wget/1.10.2 (Red Hat modified) Wget/1.11.1 (Red Hat modified) Of the few user-agents that seem ‘real’ at first, half are originating from an ip-address used by Amazon EC2. And I doubt people are setting op proxies on there. Oh yeah, Googlebot (the real deal, from a legit google owned address) is sucking up posted links like fresh oysters. I guess google is trying to make sure in advance to never be beaten by twitter in the ‘realtime search’ department. Actually, I think it’d be almost stupid NOT to post any new pages/posts/websites on Twitter, it must be one of the fastest ways to get a Googlebot visit. Same experiment with a real, established twitter account Now, because I was posting the url’s either as ’status’ messages or directed @people, on a test-account with hardly any (human) followers, I checked again using the twitter accounts from a commercial site I’m involved with. These accounts all have between 500 and 1000 targeted (I think) followers. I checked the destination access_logs and also added ‘my’ redirect after the bit.ly redirect: same results, although seemingly a bit higher real visitor/bot ratio. Btw: one of these account was ‘punished’ with a 1 week lock recently because the same (1 one!) status update was sent that was sent right before using another account. They got an email explaining the lock because the account didn’t act according to their TOS. I can’t find anything in their TOS about it, can you? I don’t think Twitter is on the right track punishing a legit account, knowing the trickery I had been doing with it’s api went totally unpunished. I might be wrong though, I often am. On the other hand: this commercial site reported targeted traffic and actual signups from visitors coming from Twitter. The ones that are really real visitors are also very targeted. I’m just not sure if the amount of work involved could hold up against an adwords campaign. Reposting the same link over and over again helps On thing I noticed: It helps to keep on reposting the same links with regular intervals. I guess most people only look at their first page when checking out recent posts of the ones they’re following, or don’t look too far back when performing a search. Now, this probably isn’t according to the twitter TOS. Actually, it might be spamming but no-one is obligated to follow anyone else of course. This way, I was getting more real visitors and less bots. To my surprise (when my programmer’s hat is on) there were still repeated visits from the same bots coming from the same ip-addresses. Did they expect to find something else when visiting for a 2nd or 3rd time? (actually,this gave me an idea: you can’t change a link once it’s posted, but you can change where it redirects to) Most bots were smart enough not to follow the same link again though. Are you successful in getting real visitors from Twitter? Are you only relying on bit.ly to provide traffic stats?

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• H12 timeout error on Heroku

  - by snowangel

  Can anyone shed some light on what's causing this timeout error on Heroku (at 2012-07-08T08:58:33+00:00)? The docs say that it's because of some long running process. I've set config.assets.initialize_on_precompile = false in config/application.rb. EmBP-2:bc Emma$ heroku restart Restarting processes... done EmBP-2:bc Emma$ heroku logs --tail 2012-07-08T08:47:21+00:00 heroku[nginx]: 82.69.50.215 - - [08/Jul/2012:08:47:21 +0000] "GET /assets/application.js HTTP/1.1" 200 311723 "https://codicology.co.uk/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.52.7 (KHTML, like Gecko) Version/5.1.2 Safari/534.52.7" codicology.co.uk 2012-07-08T08:47:21+00:00 heroku[nginx]: 127.0.0.1 - - [08/Jul/2012:08:47:21 +0000] "GET /assets/application.js HTTP/1.0" 200 1311615 "https://codicology.co.uk/" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.52.7 (KHTML, like Gecko) Version/5.1.2 Safari/534.52.7" codicology.co.uk 2012-07-08T08:51:32+00:00 heroku[slugc]: Slug compilation started 2012-07-08T08:54:05+00:00 heroku[api]: Release v145 created by [email protected] 2012-07-08T08:54:05+00:00 heroku[api]: Deploy 8814b2f by [email protected] 2012-07-08T08:54:05+00:00 heroku[web.1]: State changed from up to starting 2012-07-08T08:54:06+00:00 heroku[slugc]: Slug compilation finished 2012-07-08T08:54:09+00:00 heroku[web.1]: Stopping all processes with SIGTERM 2012-07-08T08:54:09+00:00 heroku[worker.1]: Stopping all processes with SIGTERM 2012-07-08T08:54:09+00:00 heroku[web.1]: Starting process with command `bundle exec unicorn -p 22429 -c ./config/unicorn.rb` 2012-07-08T08:54:10+00:00 app[worker.1]: [Worker(host:2046e0bf-e109-40f2-abdb-10f69d224483 pid:1)] Exiting... 2012-07-08T08:54:11+00:00 app[web.1]: I, [2012-07-08T08:54:11.320616 #1] INFO -- : reaped #<Process::Status: pid 8 exit 0> worker=1 2012-07-08T08:54:11+00:00 app[web.1]: I, [2012-07-08T08:54:11.376765 #1] INFO -- : master complete 2012-07-08T08:54:11+00:00 app[web.1]: I, [2012-07-08T08:54:11.376272 #1] INFO -- : reaped #<Process::Status: pid 5 exit 0> worker=0 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.011695 #1] INFO -- : worker=0 spawning... 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.011386 #1] INFO -- : listening on addr=0.0.0.0:22429 fd=3 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.017917 #5] INFO -- : worker=0 spawned pid=5 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.019309 #1] INFO -- : master process ready 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.018250 #5] INFO -- : Refreshing Gem list 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.016768 #1] INFO -- : worker=1 spawning... 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.020863 #8] INFO -- : Refreshing Gem list 2012-07-08T08:54:12+00:00 app[web.1]: I, [2012-07-08T08:54:12.020617 #8] INFO -- : worker=1 spawned pid=8 2012-07-08T08:54:12+00:00 app[worker.1]: SQL (2.9ms) UPDATE "delayed_jobs" SET locked_by = null, locked_at = null WHERE (locked_by = 'host:2046e0bf-e109-40f2-abdb-10f69d224483 pid:1') 2012-07-08T08:54:12+00:00 heroku[web.1]: Process exited with status 0 2012-07-08T08:54:13+00:00 heroku[web.1]: State changed from starting to up 2012-07-08T08:54:14+00:00 heroku[worker.1]: Process exited with status 0 2012-07-08T08:54:14+00:00 heroku[worker.1]: State changed from up to down 2012-07-08T08:54:14+00:00 heroku[worker.1]: State changed from down to starting 2012-07-08T08:54:20+00:00 heroku[worker.1]: Starting process with command `bundle exec rake jobs:work` 2012-07-08T08:54:20+00:00 heroku[worker.1]: State changed from starting to up 2012-07-08T08:54:28+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:54:28+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:54:28+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:54:28+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:54:33+00:00 app[web.1]: Starting the New Relic Agent. 2012-07-08T08:54:33+00:00 app[web.1]: Starting the New Relic Agent. 2012-07-08T08:54:33+00:00 app[web.1]: Installed New Relic Browser Monitoring middleware 2012-07-08T08:54:33+00:00 app[web.1]: Installed New Relic Browser Monitoring middleware 2012-07-08T08:54:34+00:00 app[web.1]: 2012-07-08T08:54:34+00:00 app[web.1]: 2012-07-08T08:54:34+00:00 app[web.1]: [DEVISE] Devise.use_salt_as_remember_token is deprecated and has no effect. Please remove it. 2012-07-08T08:54:34+00:00 app[web.1]: 2012-07-08T08:54:34+00:00 app[web.1]: [DEVISE] Devise.use_salt_as_remember_token is deprecated and has no effect. Please remove it. 2012-07-08T08:54:34+00:00 app[web.1]: 2012-07-08T08:54:34+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant XLSX 2012-07-08T08:54:34+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:54:34+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:54:34+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant XLSX 2012-07-08T08:54:34+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:54:34+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:54:41+00:00 app[worker.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:10) 2012-07-08T08:54:41+00:00 app[worker.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:10) 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importadvancecsv class 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpaymentcsv class 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpurchasecsv class 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importadvancecsv class 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpaymentcsv class 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpurchasecsv class 2012-07-08T08:54:45+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importsalecsv class 2012-07-08T08:54:46+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Profitarchive class 2012-07-08T08:54:46+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importsalecsv class 2012-07-08T08:54:46+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Profitarchive class 2012-07-08T08:54:46+00:00 app[web.1]: [paperclip] Duplicate URL for xml with :s3_eu_url. This will clash with attachment defined in Onixarchive class 2012-07-08T08:54:47+00:00 app[web.1]: [paperclip] Duplicate URL for xml with :s3_eu_url. This will clash with attachment defined in Onixarchive class 2012-07-08T08:54:48+00:00 app[web.1]: I, [2012-07-08T08:54:48.467693 #8] INFO -- : worker=1 ready 2012-07-08T08:54:48+00:00 app[web.1]: I, [2012-07-08T08:54:48.823800 #5] INFO -- : worker=0 ready 2012-07-08T08:54:48+00:00 app[worker.1]: Starting the New Relic Agent. 2012-07-08T08:54:48+00:00 app[worker.1]: New Relic Agent not running. 2012-07-08T08:54:48+00:00 app[worker.1]: [Worker(host:1eabe514-7ec9-43b0-835b-ff3bd23bc266 pid:1)] New Relic Ruby Agent Monitoring DJ worker host:1eabe514-7ec9-43b0-835b-ff3bd23bc266 pid:1 2012-07-08T08:54:48+00:00 app[worker.1]: Installed New Relic Browser Monitoring middleware 2012-07-08T08:54:49+00:00 app[worker.1]: [Worker(host:1eabe514-7ec9-43b0-835b-ff3bd23bc266 pid:1)] Starting job worker 2012-07-08T08:57:54+00:00 heroku[web.1]: State changed from up to starting 2012-07-08T08:57:56+00:00 heroku[web.1]: Stopping all processes with SIGTERM 2012-07-08T08:57:57+00:00 app[web.1]: I, [2012-07-08T08:57:57.047386 #1] INFO -- : reaped #<Process::Status: pid 5 exit 0> worker=0 2012-07-08T08:57:57+00:00 app[web.1]: I, [2012-07-08T08:57:57.047753 #1] INFO -- : reaped #<Process::Status: pid 8 exit 0> worker=1 2012-07-08T08:57:57+00:00 app[web.1]: I, [2012-07-08T08:57:57.047999 #1] INFO -- : master complete 2012-07-08T08:57:57+00:00 heroku[worker.1]: Stopping all processes with SIGTERM 2012-07-08T08:57:58+00:00 heroku[web.1]: Process exited with status 0 2012-07-08T08:57:58+00:00 app[worker.1]: [Worker(host:1eabe514-7ec9-43b0-835b-ff3bd23bc266 pid:1)] Exiting... 2012-07-08T08:57:59+00:00 heroku[web.1]: Starting process with command `bundle exec unicorn -p 29766 -c ./config/unicorn.rb` 2012-07-08T08:58:01+00:00 app[worker.1]: SQL (27.9ms) UPDATE "delayed_jobs" SET locked_by = null, locked_at = null WHERE (locked_by = 'host:1eabe514-7ec9-43b0-835b-ff3bd23bc266 pid:1') 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.070527 #1] INFO -- : listening on addr=0.0.0.0:29766 fd=3 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.070782 #1] INFO -- : worker=0 spawning... 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.074498 #1] INFO -- : worker=1 spawning... 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.075702 #1] INFO -- : master process ready 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.076732 #5] INFO -- : worker=0 spawned pid=5 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.076957 #5] INFO -- : Refreshing Gem list 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.089022 #8] INFO -- : worker=1 spawned pid=8 2012-07-08T08:58:02+00:00 app[web.1]: I, [2012-07-08T08:58:02.089299 #8] INFO -- : Refreshing Gem list 2012-07-08T08:58:02+00:00 heroku[worker.1]: Process exited with status 0 2012-07-08T08:58:02+00:00 heroku[worker.1]: State changed from up to down 2012-07-08T08:58:02+00:00 heroku[worker.1]: State changed from down to starting 2012-07-08T08:58:02+00:00 heroku[web.1]: State changed from starting to up 2012-07-08T08:58:10+00:00 heroku[worker.1]: Starting process with command `bundle exec rake jobs:work` 2012-07-08T08:58:11+00:00 heroku[worker.1]: State changed from starting to up 2012-07-08T08:58:28+00:00 app[worker.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:10) 2012-07-08T08:58:28+00:00 app[worker.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/Rakefile:10) 2012-07-08T08:58:33+00:00 heroku[router]: Error H12 (Request timeout) -> GET codicology.co.uk/ dyno=web.1 queue= wait= service=30000ms status=503 bytes=0 2012-07-08T08:58:33+00:00 heroku[nginx]: 127.0.0.1 - - [08/Jul/2012:08:58:33 +0000] "GET / HTTP/1.0" 503 601 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.52.7 (KHTML, like Gecko) Version/5.1.2 Safari/534.52.7" codicology.co.uk 2012-07-08T08:58:33+00:00 heroku[nginx]: 82.69.50.215 - - [08/Jul/2012:08:58:33 +0000] "GET / HTTP/1.1" 503 601 "-" "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/534.52.7 (KHTML, like Gecko) Version/5.1.2 Safari/534.52.7" codicology.co.uk 2012-07-08T08:58:42+00:00 app[worker.1]: New Relic Agent not running. 2012-07-08T08:58:42+00:00 app[worker.1]: [Worker(host:b5fa9243-6f9b-4de4-8f64-adab767fe4b0 pid:1)] New Relic Ruby Agent Monitoring DJ worker host:b5fa9243-6f9b-4de4-8f64-adab767fe4b0 pid:1 2012-07-08T08:58:42+00:00 app[worker.1]: Starting the New Relic Agent. 2012-07-08T08:58:42+00:00 app[worker.1]: Installed New Relic Browser Monitoring middleware 2012-07-08T08:58:43+00:00 app[worker.1]: [Worker(host:b5fa9243-6f9b-4de4-8f64-adab767fe4b0 pid:1)] Starting job worker 2012-07-08T08:58:56+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:58:56+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:58:56+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:58:56+00:00 app[web.1]: DEPRECATION WARNING: You have Rails 2.3-style plugins in vendor/plugins! Support for these plugins will be removed in Rails 4.0. Move them out and bundle them in your Gemfile, or fold them in to your app as lib/myplugin/* and config/initializers/myplugin.rb. See the release notes for more on this: http://weblog.rubyonrails.org/2012/1/4/rails-3-2-0-rc2-has-been-released. (called from <top (required)> at /app/config/environment.rb:6) 2012-07-08T08:59:02+00:00 app[web.1]: Starting the New Relic Agent. 2012-07-08T08:59:02+00:00 app[web.1]: Installed New Relic Browser Monitoring middleware 2012-07-08T08:59:02+00:00 app[web.1]: Starting the New Relic Agent. 2012-07-08T08:59:02+00:00 app[web.1]: Installed New Relic Browser Monitoring middleware 2012-07-08T08:59:03+00:00 app[web.1]: 2012-07-08T08:59:03+00:00 app[web.1]: [DEVISE] Devise.use_salt_as_remember_token is deprecated and has no effect. Please remove it. 2012-07-08T08:59:03+00:00 app[web.1]: 2012-07-08T08:59:03+00:00 app[web.1]: 2012-07-08T08:59:03+00:00 app[web.1]: [DEVISE] Devise.use_salt_as_remember_token is deprecated and has no effect. Please remove it. 2012-07-08T08:59:03+00:00 app[web.1]: 2012-07-08T08:59:04+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant XLSX 2012-07-08T08:59:04+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:59:04+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:59:04+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant XLSX 2012-07-08T08:59:04+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:59:04+00:00 app[web.1]: /app/vendor/bundle/ruby/1.9.1/gems/actionpack-3.2.3/lib/action_dispatch/http/mime_type.rb:102: warning: already initialized constant PDF 2012-07-08T08:59:22+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importadvancecsv class 2012-07-08T08:59:22+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpaymentcsv class 2012-07-08T08:59:22+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpurchasecsv class 2012-07-08T08:59:22+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importsalecsv class 2012-07-08T08:59:22+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Profitarchive class 2012-07-08T08:59:23+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importadvancecsv class 2012-07-08T08:59:23+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpaymentcsv class 2012-07-08T08:59:23+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importpurchasecsv class 2012-07-08T08:59:23+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Importsalecsv class 2012-07-08T08:59:23+00:00 app[web.1]: [paperclip] Duplicate URL for csv with :s3_eu_url. This will clash with attachment defined in Profitarchive class 2012-07-08T08:59:23+00:00 app[web.1]: [paperclip] Duplicate URL for xml with :s3_eu_url. This will clash with attachment defined in Onixarchive class 2012-07-08T08:59:24+00:00 app[web.1]: [paperclip] Duplicate URL for xml with :s3_eu_url. This will clash with attachment defined in Onixarchive class 2012-07-08T08:59:25+00:00 app[web.1]: I, [2012-07-08T08:59:25.555052 #5] INFO -- : worker=0 ready 2012-07-08T08:59:25+00:00 app[web.1]: 2012-07-08T08:59:25+00:00 app[web.1]: 2012-07-08T08:59:25+00:00 app[web.1]: Started GET "/" for 82.69.50.215 at 2012-07-08 08:59:25 +0000 2012-07-08T08:59:26+00:00 app[web.1]: Processing by PagesController#home as HTML 2012-07-08T08:59:26+00:00 app[web.1]: I, [2012-07-08T08:59:26.043501 #8] INFO -- : worker=1 ready 2012-07-08T08:59:26+00:00 app[web.1]: Rendered pages/home.html.haml within layouts/application (5.7ms) 2012-07-08T08:59:26+00:00 app[web.1]: (1.1ms) SELECT COUNT(*) FROM "delayed_jobs" 2012-07-08T08:59:26+00:00 app[web.1]: Rendered layouts/_header.html.erb (4.2ms) 2012-07-08T08:59:26+00:00 app[web.1]: Rendered layouts/_footer.html.haml (1.4ms) 2012-07-08T08:59:26+00:00 app[web.1]: Completed 200 OK in 326ms (Views: 258.4ms | ActiveRecord: 65.2ms)

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• uninitialized constant Active Scaffold rails 2.3.5

  - by Kiva

  Hi guy, I update my rails application 2.0.2 to 2.3.5. I use active scaffold for the administration part. I change nothing in my code but a problem is coming with the update. I have a controller 'admin/user_controller' to manage users. Here is the code of the controller: class Admin::UserController < ApplicationController layout 'admin' active_scaffold :user do |config| config.columns.exclude :content, :historique_content, :user_has_objet, :user_has_arme, :user_has_entrainement, :user_has_mission, :mp, :pvp, :user_salt, :tchat, :notoriete_by_pvp, :invitation config.list.columns = [:user_login, :user_niveau, :user_mail, :user_bloc, :user_valide, :group_id] #:user_description, :race, :group, :user_lastvisited, :user_nextaction, :user_combats_gagner, :user_combats_perdu, :user_combats_nul, :user_password, :user_salt, :user_combats, :user_experience, :user_mana, :user_vie config.create.link.page = true config.update.link.page = true config.create.columns.add :password, :password_confirmation config.update.columns.add :password, :password_confirmation config.create.columns.exclude :user_password, :user_salt config.update.columns.exclude :user_password, :user_salt config.list.sorting = {:user_login => 'ASC'} config.subform.columns = [] end end This code hasn't change with the update, but when I go in this page, I got this error: uninitialized constant Users /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:443:in `load_missing_constant' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in `const_missing' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:in `const_missing' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:361:in `constantize' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in `each' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/inflector.rb:360:in `constantize' /Users/Kiva/.gem/ruby/1.8/gems/activesupport-2.3.5/lib/active_support/core_ext/string/inflections.rb:162:in `constantize' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:28:in `reverse_matches_for' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:24:in `each' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:24:in `reverse_matches_for' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/extensions/reverse_associations.rb:11:in `reverse' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold/data_structures/column.rb:117:in `autolink?' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold.rb:107:in `links_for_associations' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold/data_structures/columns.rb:62:in `each' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold/data_structures/columns.rb:62:in `each' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold.rb:106:in `links_for_associations' /Users/Kiva/Documents/Projet-rpg/jeu/vendor/plugins/active_scaffold/lib/active_scaffold.rb:59:in `active_scaffold' /Users/Kiva/Documents/Projet-rpg/jeu/app/controllers/admin/user_controller.rb:11 I search since 2 days but I don't find the problem, can you help me please.

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• Ruby on Rails vs Grails vs. Spring ROO vs. Spring App

  - by lizdev

  Hi, I'm planning on writing a simple web application that will be used by lots of users (as complicated as a simple bookmarking app) and I'm trying to decide which framework/language to use. I'm very experienced with Spring/Hibernate and Java in general but new to both Grails and RoR (and Spring ROO). The only reason I'm considering RoR is because Java hosting is MUCH more expensive than RoR hosting (which is supported by almost any hosting vendor for 5$ per month). Assuming the price wasn't an issue, which one of the frameworks/languages mentioned above would you recommend for a Java developer (who knows how to configure Spring/Hibernate etc.)? I'm afraid that by using RoR I won't be able to easily support many users who are using the website at the same time. thanks

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• Best way to learn iphone audio queue services, step by step tutorial

  - by optician

  Hi Everyone, I'm trying to learn how to handle audio at a fairly low level with audio queue services. I have been progrmaing in memory managed languages for quite a while, and have just completed the c programing tutorial by vtc (2007). This has left me comfortable with the understanding of pointers and memory allocation, but the apple documention still leaves me wanting for a simpler implenation and explaination. Maybe I need to learn objective c and cocoa better. I have heard that this book is good. Cocoa(R) Programming for Mac(R) OS X (3rd Edition) Could someone suggest a learning path that is going to help me get an better understanding of working with audio and an iphone. I want to be able to play mp3 files back and also alter the pitch of them as they are playing. I am prepared that I may have to temporarily convert the mp3 files into pcm files to do things like that to them. Thanks everyone.

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• Ruby on Rails: How to sanitize a string for SQL when not using find?

  - by williamjones

  I'm trying to sanitize a string that involves user input without having to resort to manually crafting my own possibly buggy regex if possible, however, if that is the only way I would also appreciate if anyone can point me in the right direction to a regex that is unlikely to be missing anything. There are a number of methods in Rails that can allow you to enter in native SQL commands, how do people escape user input for those? The question I'm asking is a broad one, but in my particular case, I'm working with a column in my Postgres database that Rails does not natively understand as far as I know, the tsvector, which holds plain text search information. Rails is able to write and read from it as if it's a string, however, unlike a string, it doesn't seem to be automatically escaping it when I do things like vector= inside the model. For example, when I do model.name='::', where name is a string, it works fine. When I do model.vector='::' it errors out: ActiveRecord::StatementInvalid: PGError: ERROR: syntax error in tsvector: "::" "vectors" = E'::' WHERE "id" = 1 This seems to be a problem caused by lack of escaping of the semicolons, and I can manually set the vector='\:\:' fine. I also had the bright idea, maybe I can just call something like: ActiveRecord::Base.connection.execute "UPDATE medias SET vectors = ? WHERE id = 1", "::" However, this syntax doesn't work, because the raw SQL commands don't have access to find's method of escaping and inputting strings by using the ? mark. This strikes me as the same problem as calling connection.execute with any type of user input, as it all boils down to sanitizing the strings, but I can't seem to find any way to manually call Rails' SQL string sanitization methods. Can anyone provide any advice?

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• Dynamic State Machine in Ruby? Do State Machines Have to be Classes?

  - by viatropos

  Question is, are state machines always defined statically (on classes)? Or is there a way for me to have it so each instance of the class with has it's own set of states? I'm checking out Stonepath for implementing a Task Engine. I don't really see the distinction between "states" and "tasks" in there, so I'm thinking I could just map a Task directly to a state. This would allow me to be able to define task-lists (or workflows) dynamically, without having to do things like: aasm_event :evaluate do transitions :to => :in_evaluation, :from => :pending end aasm_event :accept do transitions :to => :accepted, :from => :pending end aasm_event :reject do transitions :to => :rejected, :from => :pending end Instead, a WorkItem (the main workflow/task manager model), would just have many tasks. Then the tasks would work like states, so I could do something like this: aasm_initial_state :initial tasks.each do |task| aasm_state task.name.to_sym end previous_state = nil tasks.each do |tasks| aasm_event task.name.to_sym do transitions :to => "#{task.name}_phase".to_sym, :from => previous_state ? "#{task.name}_phase" : "initial" end previous_state = state end However, I can't do that with the aasm gem because those methods (aasm_state and aasm_event) are class methods, so every instance of the class with that state machine has the same states. I want it so a "WorkItem" or "TaskList" dynmically creates a sequence of states and transitions based on the tasks it has. This would allow me to dynamically define workflows and just have states map to tasks. Are state machines ever used like this?

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• How do I create a SOAP envelope in Ruby?

  - by Angela

  I am using Savon to build the client, but want to kno how to create the actual envelope. I am thinking of using Nokogiri XML Builder and just pass in the values, but not sure if that's the right way. The SOAP envelope specs can be found here: http://api.postalmethods.com/PostalWS.asmx?op=UploadFile

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• Has anyone written Ruby code to programmatically modify their DNS?

  - by Chad

  There are a bunch of services (dyndns, nettica, etc.) that offer API's but I'm having trouble with Nettica's and I was just wondering if anyone has a nice gem suggestion for any of the DNS services... I'm not set on one or the other. Thanks for any help in advance. Chad

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