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  • Ruby Application Webroot Location

    - by Helius 06
    I have inherited a ruby application at work and I am fairly new to ruby hosting environments. The application is hosted on a linux server but I am unable to find where the webroot is. I have looked for /var/www which is the webroot for apache on linux for other applications I have been working with. But that location doesn't exist on this server. I was looking through the folders on the server and got a feeling that it might be using Nginx+passenger. Could someone point me in the right direction where to look? Any help is greatly appreciated.

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  • How to register a domain for a beginner?

    - by garbage collection
    I've never registered a .com , .net like domain before, and I would like to do some research before doing so. I currently have a ruby on rails app running Heroku. Is there anything special I have to do prior to registering domain on my ruby on rails app at all? Or is it as easy as just inserting my current Heroku address to mask it with another .com or .net name? Is there some special features I should look for registering domain? Or is it typical for domain seller to just sell domain names only? Any recommendations on sellers? Thank you.

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  • Rails 3 server won't start in cucumber environment

    - by James
    Hi I'm trying to start my rails 3 app in the same environment that cucumber uses because this is necessary for a particular test. When I try to start the server via rails server -e cucumber I get this error: /home/james/rails-projs/fact/config/environments/cucumber.rb:7: undefined local variable or method `config' for main:Object (NameError) from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `require' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `require' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:195:in `load_dependency' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:523:in `new_constants_in' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:195:in `load_dependency' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `require' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/application/bootstrap.rb:10 from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/initializable.rb:25:in `instance_exec' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/initializable.rb:25:in `run' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/initializable.rb:55:in `run_initializers' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/initializable.rb:54:in `each' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/initializable.rb:54:in `run_initializers' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/application.rb:109:in `initialize!' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/application.rb:81:in `send' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/railties/lib/rails/application.rb:81:in `method_missing' from /home/james/rails-projs/beta/config/environment.rb:6 from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `require' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `require' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:195:in `load_dependency' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:523:in `new_constants_in' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:195:in `load_dependency' from /home/james/.bundle/ruby/1.8/bundler/gems/rails-16a5e918a06649ffac24fd5873b875daf66212ad-master/activesupport/lib/active_support/dependencies.rb:209:in `require' from config.ru:3 from /usr/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `instance_eval' from /usr/lib/ruby/gems/1.8/gems/rack-1.1.0/lib/rack/builder.rb:46:in `initialize' from config.ru:1:in `new' from config.ru:1 I'd appreciate any help.

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  • Can we create desktop application with Ruby?

    - by RAJ ...
    I know the Ruby on Rails framework is only for web development and not suitable for desktop application development. But if a ruby programmer wants to develop a desktop application, is it suitable and preferable to do it with Ruby only (not jRuby, as most of the tutorials are for jRuby)? If yes, please provide some good tutorials. I want to use linux as OS for development. Please suggest something, as I am a ruby developer and wants to develop desktop application.

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  • Resque Runtime Error at /workers: wrong number of arguments for 'exists' command

    - by Superflux
    I'm having a runtime errror when i'm looking at the "workers" tab on resque-web (localhost). Everything else works. Edit: when this error occurs, i also have some (3 or 4) unknown workers 'not working'. I think they are responsible for the error but i don't understand how they got here Can you help me on this ? Did i do something wrong ? Config: Resque 1.8.5 as a gem in a rails 2.3.8 app on Snow Leopard redis 1.0.7 / rack 1.1 / sinatra 1.0 / vegas 0.1.7 file: client.rb location: format_error_reply line: 558 BACKTRACE: * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in format_error_reply * 551. when DOLLAR then format_bulk_reply(line) 552. when ASTERISK then format_multi_bulk_reply(line) 553. else raise ProtocolError.new(reply_type) 554. end 555. end 556. 557. def format_error_reply(line) 558. raise "-" + line.strip 559. end 560. 561. def format_status_reply(line) 562. line.strip 563. end 564. 565. def format_integer_reply(line) * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in format_reply * 541. 542. def reconnect 543. disconnect && connect_to_server 544. end 545. 546. def format_reply(reply_type, line) 547. case reply_type 548. when MINUS then format_error_reply(line) 549. when PLUS then format_status_reply(line) 550. when COLON then format_integer_reply(line) 551. when DOLLAR then format_bulk_reply(line) 552. when ASTERISK then format_multi_bulk_reply(line) 553. else raise ProtocolError.new(reply_type) 554. end 555. end * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in read_reply * 478. disconnect 479. 480. raise Errno::EAGAIN, "Timeout reading from the socket" 481. end 482. 483. raise Errno::ECONNRESET, "Connection lost" unless reply_type 484. 485. format_reply(reply_type, @sock.gets) 486. end 487. 488. 489. if "".respond_to?(:bytesize) 490. def get_size(string) 491. string.bytesize 492. end * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in process_command * 448. return pipeline ? results : results[0] 449. end 450. 451. def process_command(command, argvv) 452. @sock.write(command) 453. argvv.map do |argv| 454. processor = REPLY_PROCESSOR[argv[0].to_s] 455. processor ? processor.call(read_reply) : read_reply 456. end 457. end 458. 459. def maybe_lock(&block) 460. if @thread_safe 461. @mutex.synchronize(&block) 462. else * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in map * 446. end 447. 448. return pipeline ? results : results[0] 449. end 450. 451. def process_command(command, argvv) 452. @sock.write(command) 453. argvv.map do |argv| 454. processor = REPLY_PROCESSOR[argv[0].to_s] 455. processor ? processor.call(read_reply) : read_reply 456. end 457. end 458. 459. def maybe_lock(&block) 460. if @thread_safe * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in process_command * 446. end 447. 448. return pipeline ? results : results[0] 449. end 450. 451. def process_command(command, argvv) 452. @sock.write(command) 453. argvv.map do |argv| 454. processor = REPLY_PROCESSOR[argv[0].to_s] 455. processor ? processor.call(read_reply) : read_reply 456. end 457. end 458. 459. def maybe_lock(&block) 460. if @thread_safe * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in raw_call_command * 435. @sock.write(command) 436. return true 437. end 438. # The normal command execution is reading and processing the reply. 439. results = maybe_lock do 440. begin 441. set_socket_timeout!(0) if requires_timeout_reset?(argvv[0][0].to_s) 442. process_command(command, argvv) 443. ensure 444. set_socket_timeout!(@timeout) if requires_timeout_reset?(argvv[0][0].to_s) 445. end 446. end 447. 448. return pipeline ? results : results[0] 449. end * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in synchronize * 454. processor = REPLY_PROCESSOR[argv[0].to_s] 455. processor ? processor.call(read_reply) : read_reply 456. end 457. end 458. 459. def maybe_lock(&block) 460. if @thread_safe 461. @mutex.synchronize(&block) 462. else 463. block.call 464. end 465. end 466. 467. def read_reply 468. * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in maybe_lock * 454. processor = REPLY_PROCESSOR[argv[0].to_s] 455. processor ? processor.call(read_reply) : read_reply 456. end 457. end 458. 459. def maybe_lock(&block) 460. if @thread_safe 461. @mutex.synchronize(&block) 462. else 463. block.call 464. end 465. end 466. 467. def read_reply 468. * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in raw_call_command * 432. end 433. # When in Pub/Sub mode we don't read replies synchronously. 434. if @pubsub 435. @sock.write(command) 436. return true 437. end 438. # The normal command execution is reading and processing the reply. 439. results = maybe_lock do 440. begin 441. set_socket_timeout!(0) if requires_timeout_reset?(argvv[0][0].to_s) 442. process_command(command, argvv) 443. ensure 444. set_socket_timeout!(@timeout) if requires_timeout_reset?(argvv[0][0].to_s) 445. end 446. end * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in call_command * 336. # try to reconnect just one time, otherwise let the error araise. 337. def call_command(argv) 338. log(argv.inspect, :debug) 339. 340. connect_to_server unless connected? 341. 342. begin 343. raw_call_command(argv.dup) 344. rescue Errno::ECONNRESET, Errno::EPIPE, Errno::ECONNABORTED 345. if reconnect 346. raw_call_command(argv.dup) 347. else 348. raise Errno::ECONNRESET 349. end 350. end * /Library/Ruby/Gems/1.8/gems/redis-1.0.7/lib/redis/client.rb in method_missing * 385. connect_to(@host, @port) 386. call_command([:auth, @password]) if @password 387. call_command([:select, @db]) if @db != 0 388. @sock 389. end 390. 391. def method_missing(*argv) 392. call_command(argv) 393. end 394. 395. def raw_call_command(argvp) 396. if argvp[0].is_a?(Array) 397. argvv = argvp 398. pipeline = true 399. else * /Library/Ruby/Gems/1.8/gems/redis-namespace-0.4.4/lib/redis/namespace.rb in send * 159. args = add_namespace(args) 160. args.push(last) if last 161. when :alternate 162. args = [ add_namespace(Hash[*args]) ] 163. end 164. 165. # Dispatch the command to Redis and store the result. 166. result = @redis.send(command, *args, &block) 167. 168. # Remove the namespace from results that are keys. 169. result = rem_namespace(result) if after == :all 170. 171. result 172. end 173. * /Library/Ruby/Gems/1.8/gems/redis-namespace-0.4.4/lib/redis/namespace.rb in method_missing * 159. args = add_namespace(args) 160. args.push(last) if last 161. when :alternate 162. args = [ add_namespace(Hash[*args]) ] 163. end 164. 165. # Dispatch the command to Redis and store the result. 166. result = @redis.send(command, *args, &block) 167. 168. # Remove the namespace from results that are keys. 169. result = rem_namespace(result) if after == :all 170. 171. result 172. end 173. * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/lib/resque/worker.rb in state * 416. def idle? 417. state == :idle 418. end 419. 420. # Returns a symbol representing the current worker state, 421. # which can be either :working or :idle 422. def state 423. redis.exists("worker:#{self}") ? :working : :idle 424. end 425. 426. # Is this worker the same as another worker? 427. def ==(other) 428. to_s == other.to_s 429. end 430. * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/lib/resque/server/views/workers.erb in __tilt_a2112543c5200dbe0635da5124b47311 * 46. <tr> 47. <th>&nbsp;</th> 48. <th>Where</th> 49. <th>Queues</th> 50. <th>Processing</th> 51. </tr> 52. <% for worker in (workers = resque.workers.sort_by { |w| w.to_s }) %> 53. <tr class="<%=state = worker.state%>"> 54. <td class='icon'><img src="<%=u state %>.png" alt="<%= state %>" title="<%= state %>"></td> 55. 56. <% host, pid, queues = worker.to_s.split(':') %> 57. <td class='where'><a href="<%=u "workers/#{worker}"%>"><%= host %>:<%= pid %></a></td> 58. <td class='queues'><%= queues.split(',').map { |q| '<a class="queue-tag" href="' + u("/queues/#{q}") + '">' + q + '</a>'}.join('') %></td> 59. 60. <td class='process'> * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/lib/resque/server/views/workers.erb in each * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/lib/resque/server/views/workers.erb in __tilt_a2112543c5200dbe0635da5124b47311 * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/tilt.rb in send * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/tilt.rb in evaluate * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/tilt.rb in render * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in render * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in erb * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/lib/resque/server.rb in show * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/lib/resque/server.rb in GET /workers * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in call * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in route * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in instance_eval * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in route_eval * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in route! * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in catch * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in route! * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in each * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in route! * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in dispatch! * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in call! * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in instance_eval * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in invoke * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in catch * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in invoke * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in call! * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in call * /Volumes/Donnees/Users/**/.gem/ruby/1.8/gems/rack-1.1.0/lib/rack/showexceptions.rb in call * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in call * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in synchronize * /Library/Ruby/Gems/1.8/gems/sinatra-1.0/lib/sinatra/base.rb in call * /Volumes/Donnees/Users/**/.gem/ruby/1.8/gems/rack-1.1.0/lib/rack/content_length.rb in call * /Volumes/Donnees/Users/**/.gem/ruby/1.8/gems/rack-1.1.0/lib/rack/chunked.rb in call * /Volumes/Donnees/Users/**/.gem/ruby/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb in process * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in process_client * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in each * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in process_client * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in run * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in initialize * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in new * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in run * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in initialize * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in new * /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8/gems/mongrel-1.1.5/lib/mongrel.rb in run * /Volumes/Donnees/Users/**/.gem/ruby/1.8/gems/rack-1.1.0/lib/rack/handler/mongrel.rb in run * /Library/Ruby/Gems/1.8/gems/vegas-0.1.7/lib/vegas/runner.rb in run! * /Library/Ruby/Gems/1.8/gems/vegas-0.1.7/lib/vegas/runner.rb in start * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/bin/resque-web in new * /Library/Ruby/Gems/1.8/gems/resque-1.8.5/bin/resque-web in nil * /usr/bin/resque-web in load

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  • Ruby on Rails: How do I remove a gem path? (I have two for some reason)

    - by sjsc
    I'm looking to remove a gem path (/home/sjsc/.ge/ruby/1.8). For some reason, I have two, and I can't seem to install gems correctly. When I do "gem env", here's what I get: RubyGems Environment: - RUBYGEMS VERSION: 1.3.6 - RUBY VERSION: 1.8.7 (2009-06-12 patchlevel 174) [i486-linux] - INSTALLATION DIRECTORY: /usr/lib/ruby/gems/1.8 - RUBY EXECUTABLE: /usr/bin/ruby1.8 - EXECUTABLE DIRECTORY: /usr/bin - RUBYGEMS PLATFORMS: - ruby - x86-linux - GEM PATHS: - /usr/lib/ruby/gems/1.8 - /home/sjsc/.gem/ruby/1.8 Any idea on how to remove the "/home/sjsc/.gem/ruby/1.8" from the "GEM PATHS"?

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  • Problems running rails server

    - by harristrader
    I just installed the rails env using the Rails installer on my Mac OSX 10.7.4. I create a project using the "rails new" command. When I try to run the "rails server" command I get this message: /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/rails_generator/options.rb:32:in `default_options': undefined method `write_inheritable_attribute' for Rails::Generator::Base:Class (NoMethodError) from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/rails_generator/base.rb:90:in `<class:Base>' from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/rails_generator/base.rb:85:in `<module:Generator>' from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/rails_generator/base.rb:48:in `<module:Rails>' from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/rails_generator/base.rb:6:in `<top (required)>' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require' from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/lib/rails_generator.rb:37:in `<top (required)>' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require' from /usr/local/rvm/rubies/ruby-1.9.3-p194/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:55:in `require' from /usr/local/rvm/gems/ruby-1.9.3-p194/gems/rails-2.3.14/bin/rails:15:in `<top (required)>' from /usr/local/rvm/gems/ruby-1.9.3-p194/bin/rails:23:in `load' from /usr/local/rvm/gems/ruby-1.9.3-p194/bin/rails:23:in `<main>' When I run the $ ruby -v and $ gem -v, I get "ruby 1.9.3p194" and "1.8.24" respectively. What am I missing here? How can I get this server to run?

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  • When using Bundler and Rails 2.3.5 I get uninitialized constant SubdomainFu when migrating

    - by user347480
    Hi I'm using bundler with rails 2.3.5 and I'm trying to make sure everything is working correctly but when I do a "rake db:migrate --trace" I get this ** Invoke db:migrate (first_time) ** Invoke environment (first_time) ** Execute environment rake aborted! uninitialized constant SubdomainFu /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:443:inload_missing_constant' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:80:in const_missing' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:92:inconst_missing' /Users/node/Projects/Race-RX/config/initializers/subdomain_config.rb:1 /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:in load_without_new_constant_marking' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:inload' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:in new_constants_in' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:145:inload' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:622:in load_application_initializers' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:621:ineach' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:621:in load_application_initializers' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:176:inprocess' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:in send' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/initializer.rb:113:inrun' /Users/node/Projects/Race-RX/config/environment.rb:9 /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in gem_original_require' /opt/local/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:inrequire' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:521:innew_constants_in' /opt/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/dependencies.rb:156:in require' /opt/local/lib/ruby/gems/1.8/gems/rails-2.3.5/lib/tasks/misc.rake:4 /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:incall' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:636:in execute' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:ineach' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:631:in execute' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:597:ininvoke_with_call_chain' /opt/local/lib/ruby/1.8/monitor.rb:242:in synchronize' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:ininvoke_with_call_chain' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:607:in invoke_prerequisites' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:ineach' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:604:in invoke_prerequisites' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:596:ininvoke_with_call_chain' /opt/local/lib/ruby/1.8/monitor.rb:242:in synchronize' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:590:ininvoke_with_call_chain' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:583:in invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2051:ininvoke_task' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in top_level' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:ineach' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2029:in top_level' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:instandard_exception_handling' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2023:in top_level' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2001:inrun' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2068:in standard_exception_handling' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:1998:inrun' /opt/local/lib/ruby/gems/1.8/gems/rake-0.8.7/bin/rake:31 /opt/local/bin/rake:19:in load' /opt/local/bin/rake:19 I don't know what could be causing this. I did however but my require "rubygems" require "bundler" Bundler.setup in my enviroment.rb file but that doesn't see to be the problem.

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  • Retrieve Gmail using Ruby

    - by Kartik Rao
    I need to retrieve emails from my Gmail account using Ruby on Rails. I'm currently using this piece of code, but it gives me a timeout error everytime. require 'net/pop' pop = Net::POP3.new 'mail.isp.com' pop.start '[email protected]', 'password' if pop.mails.empty? puts "No mail." else puts "You have #{pop.mails.length} new messages." puts "Downloading..." pop.mails.each_with_index do|m,i| File.open( "inbox/#{i}", 'w+' ) do|f| f.write m.pop end m.delete end end This is the error I recieve /usr/lib/ruby/1.8/timeout.rb:60:in `new': execution expired (Timeout::Error) from /usr/lib/ruby/1.8/net/protocol.rb:206:in `old_open' from /usr/lib/ruby/1.8/net/protocol.rb:206:in `old_open' from /usr/lib/ruby/1.8/net/pop.rb:438:in `do_start' from /usr/lib/ruby/1.8/net/pop.rb:432:in `start' from script/mail.rb:4 Any help will be appreciated!

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  • Fleximage gem on Ruby 1.9

    - by jaycode
    Running a Rails application with Fleximage in Ruby 1.8.7 works fine, but in Ruby 1.9 returned error: /usr/local/lib/ruby/gems/1.9.1/gems/fleximage-1.0.4/lib/fleximage/model.rb:340: [BUG] Segmentation fault ruby 1.9.1p376 (2009-12-07 revision 26041) [i386-darwin10.0.0] -- control frame ---------- c:0060 p:---- s:0295 b:0295 l:000294 d:000294 CFUNC :read c:0059 p:0060 s:0291 b:0291 l:000290 d:000290 METHOD /usr/local/lib/ruby/gems/1.9.1/gems/fleximage-1.0.4/lib/fleximage/model.rb:340 c:0058 p:0084 s:0285 b:0285 l:000275 d:000284 BLOCK /usr/local/lib/ruby/gems/1.9.1/gems/activerecord-2.3.5/lib/active_record/base.rb:2746 c:0057 p:---- s:0281 b:0281 l:000280 d:000280 FINISH c:0056 p:---- s:0279 b:0279 l:000278 d:000278 CFUNC :each And further very long line of error. My fleximage is stored as gem, keeping it as plugin returning a different set of errors so I don't bother. How to fix this?

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  • Faye private pub web sockets Errno::ECONNREFUSED: Connection refused - connect(2)

    - by Rubytastic
    Faye private pub has issues connecting. It works from rails console and from inside application. It fails when called from background process like delayed_job or sidekiq. I have been unable to resolve this issue for some time now, does anyone know why this happens? Errno::ECONNREFUSED: Connection refused - connect(2) /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/resolv-replace.rb:23:in initialize' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/resolv-replace.rb:23:in initialize' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:878:in open' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:878:in block in connect' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/timeout.rb:52:in timeout' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:877:in connect' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:862:in do_start' /Users/jordan/.rvm/rubies/ruby-2.0.0-p247/lib/ruby/2.0.0/net/http.rb:851:in start' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/private_pub-1.0.3/lib/private_pub.rb:42:in publish_message' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/private_pub-1.0.3/lib/private_pub.rb:29:in publish_to' /srv/books/app/workers/session_reload.rb:16:in perform' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:48:in block (3 levels) in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:119:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:119:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/newrelic_rpm-3.6.8.168/lib/new_relic/agent/instrumentation/sidekiq.rb:25:in block in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/newrelic_rpm-3.6.8.168/lib/new_relic/agent/instrumentation/controller_instrumentation.rb:324:in perform_action_with_newrelic_trace' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/newrelic_rpm-3.6.8.168/lib/new_relic/agent/instrumentation/sidekiq.rb:21:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-failures-0.2.2/lib/sidekiq/failures/middleware.rb:10:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/active_record.rb:6:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/retry_jobs.rb:62:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/logging.rb:11:in block in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/logging.rb:22:in with_context' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/server/logging.rb:7:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:121:inblock in invoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:124:in call' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/middleware/chain.rb:124:ininvoke' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:47:in block (2 levels) in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:102:in stats' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:46:in block in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:83:in do_defer' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/sidekiq-2.16.0/lib/sidekiq/processor.rb:37:in process' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in public_send' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/calls.rb:25:in dispatch' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/calls.rb:122:in dispatch' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/actor.rb:322:in block in handle_message' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/actor.rb:416:in block in task' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/tasks.rb:55:in block in initialize' /Users/jordan/.rvm/gems/ruby-2.0.0-p247@books/gems/celluloid-0.15.2/lib/celluloid/tasks/task_fiber.rb:13:in block in create' Processor: dev-air.local:db67c04914cdef80c501043115298f6d-70211452597260

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  • Ruby DEPRECATION WARNING: You are using the old router DSL which will be removed in Rails 3.1.

    - by user297221
    Hi guys. I am using rails 3 and at the moment i am writing tests for my application. I get this weird deprecation warning: DEPRECATION WARNING: You are using the old router DSL which will be removed in Rails 3.1. Please check how to update your routes file at: http://www.engineyard.com/blog/2010/the-lowdown-on-routes-in-rails-3/. (called from at /Users/jeljer/Dropbox/webCMS/config/environment.rb:6) Of course my routes file is this: WebCMS::Application.routes.draw do #... end but no luck. If I look at the place what it is pointing to in my enviroment.rb: WebCMS::Application.initialize! I did a gem cleanup without any luck. Does anybody have an idea? ps. i am using rvm with ruby 1.9.2

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  • How do I run a ruby script, that I put in my /lib/tasks/ directory in my Rails app, once?

    - by marcamillion
    Eventually I would like to get to setting it up as a Rake task and do a cron job, but for right now...all I want to do is take my ruby script that used to work as a standalone script and have it work within my Rails app. I renamed the file to be .rake instead of .rb and tried doing rake my_script at the command-line, but that gave me this error message: rake aborted! Don't know how to build task 'my_script' (See full trace by running task with --trace) How do I run this script within my Rails environment? This is the first time I am doing something like this, so any assistance would be greatly appreciated. Thanks.

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  • Calling another ruby script from a ruby script

    - by Andrew Grimm
    In ruby, is it possible to specify to call another ruby script using the same ruby interpreter as the original script is being run by? For example, if a.rb runs b.rb a couple of times, is it possible to replace system("ruby", "b.rb", "foo", "bar") with something like run_ruby("b.rb", "foo", "bar") so that if you used ruby1.9.1 a.rb on the original, ruby1.9.1 would be used on b.rb, but if you just used ruby a.rb on the original, ruby would be used on b.rb? I'd prefer not to use shebangs, as I'd like it to be able to run on different computers, some of which don't have /usr/bin/env.

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  • Running another ruby script from a ruby script

    - by Andrew Grimm
    In ruby, is it possible to specify to call another ruby script using the same ruby interpreter as the original script is being run by? For example, if a.rb runs b.rb a couple of times, is it possible to replace system("ruby", "b.rb", "foo", "bar") with something like run_ruby("b.rb", "foo", "bar") so that if you used ruby1.9.1 a.rb on the original, ruby1.9.1 would be used on b.rb, but if you just used ruby a.rb on the original, ruby would be used on b.rb? I'd prefer not to use shebangs, as I'd like it to be able to run on different computers, some of which don't have /usr/bin/env. Edit: I didn't mean load or require and the like, but spawning new processes (so I can use multiple CPUs).

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  • Ubuntu | Ruby - Can't Remove Ruby 1.9.2 from system

    - by JWally
    I'm new to ubuntu, and might have had a couple of false starts updating ruby / rails. I'm trying to start clean by removing all versions of every thing ruby from my system I think I've installed everything through either Synaptic, or aptitude purge, but I can still do the following: jwally@jwally-laptop:~$ ruby -v ruby 1.9.2p0 (2010-08-18 revision 29036) [i686-linux] jwally@jwally-laptop:~$ gem -v 1.3.7 jwally@jwally-laptop:~$ irb irb(main):001:0> RUBY_VERSION => "1.9.2" but when I type "dpkg -l | grep ruby, I only get the following: rc ruby1.8-elisp 1.8.7.249-2 ruby-mode for Emacsen thanks in advance

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  • Run command in command prompt from Ruby application

    - by Julian
    I have a command-line Ruby application that uses Curses to create a GUI. This GUI is absolutely mangled by Windows' command prompt if the command prompt window is too small. The command prompt window can be resized in properties. However, I want to resize it programatically. Running this command in the command prompt (nothing to do with Ruby) will resize the command prompt window to desired variables. mode con:cols=120 lines=40 Can I do this purely in Ruby? Or, failing that (I suspect doing it purely in Ruby may be impossible) can my ruby application actually run that command and 'hit enter', and resize window it's running in?

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  • Worthwhile to upgrade my Ruby Pickaxe book?

    - by ewindisch
    I have Programming Ruby, The Pragmatic Programmers' Guide, Second Edition which covers Ruby 1.8. It has been several years since I have programmed in Ruby, but I'd like to refresh my memory and bring my knowledge current. With most programming languages, I've found that I can skip books that only concern a single version bump. Yet, Ruby is a young language and I understand there may have been significant changes in 1.9. Although I already have the second edition, is it worthwhile to buy the third edition for Ruby 1.9? Are the differences that vast, or will it be simple enough to catch up to 1.9 with the online docs?

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  • How can I convert this PHP script to Ruby? (build tree from tabbed string)

    - by Jon Sunrays
    I found this script below online, and I'm wondering how I can do the same thing with a Ruby on Rails setup. So, first off, I ran this command: rails g model Node node_id:integer title:string Given this set up, how can I make a tree from a tabbed string like the following? <?php // Make sure to have "Academia" be root node with nodeID of 1 $data = " Social sciences Anthropology Biological anthropology Forensic anthropology Gene-culture coevolution Human behavioral ecology Human evolution Medical anthropology Paleoanthropology Population genetics Primatology Anthropological linguistics Synchronic linguistics (or Descriptive linguistics) Diachronic linguistics (or Historical linguistics) Ethnolinguistics Sociolinguistics Cultural anthropology Anthropology of religion Economic anthropology Ethnography Ethnohistory Ethnology Ethnomusicology Folklore Mythology Political anthropology Psychological anthropology Archaeology ...(goes on for a long time) "; //echo "Checkpoint 2\n"; $lines = preg_split("/\n/", $data); $parentids = array(0 => null); $db = new PDO("host", 'username', 'pass'); $sql = 'INSERT INTO `TreeNode` SET ParentID = ?, Title = ?'; $stmt = $db->prepare($sql); foreach ($lines as $line) { if (!preg_match('/^([\s]*)(.*)$/', $line, $m)) { continue; } $spaces = strlen($m[1]); //$level = intval($spaces / 4); //assumes four spaces per indent $level = strlen($m[1]); // if data is tab indented $title = $m[2]; $parentid = ($level > 0 ? $parentids[$level - 1] : 1); //All "roots" are children of "Academia" which has an ID of "1"; $rv = $stmt->execute(array($parentid, $title)); $parentids[$level] = $db->lastInsertId(); echo "inserted $parentid - " . $parentid . " title: " . $title . "\n"; } ?>

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  • How to get decent MySQL driver perfomance in Ruby

    - by Zombies
    I notice that I am getting very poor performance for either or both inserts and queries. The queries themselves are basic and can execute with no delay directly from mysql. The ruby script that I wrote is only 1 thread, so only 1 connection is being used, and never closed unless the script is terminated. Pretty basic, I am just trying to insert a lot of rows. There is a look-up or two to get a surrogate key, or to check for duplicates, but the complexity is just O(n). Also, it isn't like there are millions of records, so again the queries themselves take no time to run. I am using: Ruby 1.9.1 Gem/driver:ruby-mysql 2.9.2 MySQL 5.1.37-1ubuntu5.1 ^ all 32 bit versions on a 32bit ubuntu distro I am getting about 1-2 inserts per second, pretty slow. I know a lot of people will suggest to change drivers, but that means I have some refactoring and resting to do. So I would really appreciate any help, but please if you do recomend that at least say why you do (eg: if you have used ruby-mysql x.x.x before and found another mysql driver to be better).ruby-mysql 2.9.2 What I would like to know: How can I improve performance with ruby-mysql 2.9.2 If and only if I cannot do this with ruby-mysql 2.9.2, what should I do?

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  • Ruby getting the diagonal elements in a 2d Array

    - by Calm Storm
    Hi, I was trying some problems with my 2D ruby array and my LOC reduces a lot when I do array slicing. So for example, require "test/unit" class LibraryTest < Test::Unit::TestCase def test_box array = [[1,2,3,4],[3,4,5,6], [5,6,7,8], [2,3,4,5]] puts array[1][2..3] # 5, 6 puts array[1..2][1] # 5, 6, 7, 8 end end I want to know if there is a way to get a diagonal slice? Lets say I want to start at [0,0] and want a diagonal slice of 3. Then I would get elements from [0,0], [1,1], [2,2] and I will get an array like [1,4,7] for example above. Is there any magic one-liner ruby code that can achieve this? 3.times do {some magic stuff?}

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  • Why’s (Poignant) Guide to Ruby

    - by Ben Griswold
    You’re familiar with O’Reilly’s brilliant Head First Series, right?  Great.  Then you know how every book begins with an explanation of the Head First teaching style and you know the teaching format which Kathy Sierra and Bert Bates developed is based on research in cognitive science, neurobiology and educational psychology and it’s all about making learning visual and conversational and attractive and emotional and it’s highly effective.  Anyway, it’s a great series and you should read every last one of the books. Moving on… I’ve been wanting to learn more about Ruby and Why’s (Poignant) Guide to Ruby has been on my reading list for a while and there was talk about cartoon foxes and other silliness and I figured Why’s (Poignant) Guide to Ruby probably takes the same unorthodox teaching style as the Head First books – and that’s great – so I read the book, in piecemeal, over the last couple of weeks and, well, I figured wrong. Now having read the book, here’s my take on Why’s (Poignant) Guide – it’s very creative and clever and it does a darn good job of introducing one to Ruby.  If you’re interested in Ruby or simply interested, the online book is worth your time.  If you’re thinking (like me) that cartoon foxes will be doing the teaching, that’s simple not the case.  However, the cartoons and the random stories in the sidebar may serve a purpose. Unlike the Head First books where images and captions are used to further explain the teachings, the cartoons and stories in Why’s Guide serve as intermission and offer your brain a brief moment of rest before the next Ruby concept is explained.  It’s not a bad strategy, but definitely not as effective as the Head First techniques.  

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  • Should a Python programmer learn Ruby?

    - by C J
    Hi! I have been a Python programmer for around 1.5 years (one internship + side projects), so I am comfortable with the language. Given that everyone is talking about Ruby these days, and I mean seriously! No one bothers about Python (from what I've seen). See GitHub. All RoR. I apply for a job and they ask me about RoR. I look at the screencasts on peepcode.com and they are in Ruby. gitimmersion.com has all the tutorial in Ruby! I know this is pretty vague, but still... why Ruby! Everyone these days is obssessed with RoR! Why not Python? Anyways, my questions are: Should I learn Ruby? Is learning Ruby when knowing Python be, er, complicated for me? Or is it going to be just like learning any other language? Thanks!

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  • The speed of Ruby and Java.

    - by Simon
    In every benchmark that I found on the web it seems that Ruby is slow, much slower than Java. The Ruby folks just state that it doesn't matter. Could you give me any example that the speed of Ruby on Rails (and the Ruby itself) really doesn't matter?

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