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• Using the MongoDB Ruby driver in Rails? (without an object mapper)

  - by Mark L

  I have recently been getting my feet wet in MongoDB using Mongoid w/ Rails 3, but I'm now interested in learning the low level MongoDB features using only the Ruby driver, and trying some map/reduce that would not be possible through Mongoid (afaik) I'm not entirely sure where in Rails I should be setting up the db connections etc, and any pointers would be much appreciated!

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• What is the meaning of method class in the class definition in Ruby?

  - by Steven Xu

  I'm familiar with function definitions and variable declarations being in class definitions: public class MyClass { public int myvar; public void doSomething() { } } But what does it "mean" in Ruby when a method is actually called in the class definition? This happens amply in Rails, for instance: class User < ActiveRecord::Base has_many :posts end What exactly does this do (at a lower level than "it adds some methods to the class")? How would I implement such a function (e.g., one that mixes in some additional methods)?

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• Switching from PHP to Ruby - is it the answer to performance?

  - by Industrial

  Hi everyone, I get more often the answer, when asking performance related stuff regarding PHP applications, that PHP really isn't the language for high-performance applications, and that a compiled language really is the way to go. The only thing holding me back to PHP is that it's what I have learned to work with for some while now and the development is quite rapid. So, is PHP a thing of the past and should be put aside in web applications in favour of Ruby, for instance? Thanks

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• In Ruby, how to write a method to display any object's instance variable names and its values

  - by Jian Lin

  Given any object in Ruby (on Rails), how can I write a method so that it will display that object's instance variable names and its values, like this: @x: 1 @y: 2 @link_to_point: #<Point:0x10031b298 @y=20, @x=38> I also want to be able to print <br> to the end of each instance variable's value so as to print them out nicely on a webpage. the difficulty now seems to be that not every instance variable has an accessor, so it can't be called with obj.send(var_name) (the var_name has the "@" removed, so "@x" becomes "x")

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• How to read a file from bottom to top in Ruby?

  - by two2twelve

  I've been working on a log viewer for a Rails app and have found that I need to read around 200 lines of a log file from bottom to top instead of the default top to bottom. Log files can get quite large, so I've already tried and ruled out the IO.readlines("log_file.log")[-200..-1] method. Are there any other ways to go about reading a file backwards in Ruby without the need for a plugin or gem?

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• how do i check the value inside a text feild while using ruby selenium testing?

  - by Mo

  i am running a selenium test using ruby and was wondering how i can assert the value inside a text field? i have a page where once its loaded has text inside the editable text field and i was wondering how i can check if the text is present? thank you

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• "string_name = string_name[3..-1]" what could the follwoing line of ruby code mean?

  - by Mo

  hi im looking at some external code and saw a line of ruby code that looks like this string_name = string_name[3..-1] what does the [n..-x] do or mean? thanks

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• Rendering field data as a link in Ruby on Rails...

  - by bgadoci

  Ok, I think this is probably an easy question but for the life of my I can't figure it out. I have created a table called ugtags and in that table I have two columns (beyond the basics), 'name' and 'link'. I am trying to allow a user to add a link to a page. Ideally they would enter the link title (name) and the url (link) and in the view it would display the title as a link to the url that was entered in the link column. I there a way to do it by simply affecting the <%= link_to h(ugtag.name) %> code?

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• What is the best OS for a server hosting a simple Ruby on Rails based pastebin

  - by Koning Baard XIV

  I have created a simple pastebin in Ruby on Rails and Python. I want to host it in an intranet and it will have like about 1000 users. I want to use one Apache server with a cluster of Mongrel servers. The server itself is a 2 GHz Intel Centrino with 2 GB RAM. What do you think is the best OS to host this? I thought about Damn Small Linux or a custom LFS system. Ubuntu servers come with loads of stuff I don't need. Maybe there are some better OSes? It must be capable of: Running Apache Running Ruby Running Python Running Mongrel with Ruby on Rails SSH Can anyone reccomend me one? Thanks. PS: I am not going to run Windows Server or Mac OS X Server (Mac's are expensive).

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• How do I configure Ruby On Rails on windows XP with APACHE and MYSQL

  - by Gaurav Sharma

  Hello Everyone, It has been quite some time I am struggling to get Ruby On Rails working on my System which is having Windows XP operating system. I am trying to configure ROR to use apache and mysql so that I do not have to install additional servers to run ruby on rails. I also tried InstantRails but faced same problems. I went through the tutorial mentioned in getting rails to wrok on a windows machine running xampp and did all the steps which were necessary. All went fine (installing rails, running the ruby, gem and rails command from command prompt) but when I tried to run my application by typing localhost:3000/say/hello nothing happened and I was redirected to the google page for searching to this keyword. Please help me Thanks

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• unable to run Selenium webdriver in windows - Permission denied - bind(2) (Errno::EACCES)

  - by mrd abd

  I want to start Selenium web driver in Windows 7 with Ruby 2. but i get error Permission denied - bind(2) (Errno::EACCES) Even in running with Administrator permission. here is my simple ruby code: require "selenium-webdriver" driver = Selenium::WebDriver.for :firefox driver.navigate.to "http://google.com" element = driver.find_element(:name, 'q') element.send_keys "Hello WebDriver!" element.submit puts driver.title driver.quit and here is the error: E:\ruby\930305\Studio\Ruby\test>ruby selenium.rb C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/w ebdriver/common/port_prober.rb:28:in `initialize': Permission denied - bind(2) (Errno::EACCES) from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/port_prober.rb:28:in `new' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/port_prober.rb:28:in `block in free?' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/port_prober.rb:26:in `each' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/port_prober.rb:26:in `free?' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/port_prober.rb:5:in `above' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/firefox/launcher.rb:49:in `find_free_port' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/firefox/launcher.rb:33:in `block in launch' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/firefox/socket_lock.rb:20:in `locked' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/firefox/launcher.rb:32:in `launch' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/firefox/bridge.rb:24:in `initialize' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/driver.rb:31:in `new' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver/common/driver.rb:31:in `for' from C:/Ruby200-x64/lib/ruby/gems/2.0.0/gems/selenium-webdriver-2.42.0/lib/selenium/webdriver.rb:67:in `for' from selenium.rb:3:in `<main>'

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• I get an Exception when trying to implement reset password with Authlogic

  - by Tam

  Hi, I'm using Ruby on Rails 2.3.5 and Ruby 1.9 and implmeneted Authlogic as my authentication engine. Authlogic works fine. But now I have been trying to implement password reset using the following tutorial: http://www.binarylogic.com/2008/11/16/tutorial-reset-passwords-with-authlogic/ But I'm getting the following exception when I type mysite.com/password_resets/new Processing PasswordResetsController#new (for 127.0.0.1 at 2010-03-13 01:09:45) [GET] Completed in 9ms (DB: 0) | 200 [http://localhost/password_resets/new] [2010-03-13 01:09:45] ERROR TypeError: can't convert Array into String /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-2.3.5/lib/active_support/core_ext/string/output_safety.rb:34:in `concat' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/activesupport-2.3.5/lib/active_support/core_ext/string/output_safety.rb:34:in `concat_with_safety' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.0.1/lib/rack/handler/webrick.rb:63:in `block in service' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/actionpack-2.3.5/lib/action_controller/response.rb:158:in `each' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/actionpack-2.3.5/lib/action_controller/response.rb:158:in `each' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:16:in `send' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/actionpack-2.3.5/lib/action_controller/string_coercion.rb:16:in `method_missing' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/actionpack-2.3.5/lib/action_controller/reloader.rb:22:in `method_missing' /Users/tammam56/.rvm/gems/ruby-1.9.1-p378/gems/rack-1.0.1/lib/rack/handler/webrick.rb:62:in `service' /Users/tammam56/.rvm/rubies/ruby-1.9.1-p378/lib/ruby/1.9.1/webrick/httpserver.rb:111:in `service' /Users/tammam56/.rvm/rubies/ruby-1.9.1-p378/lib/ruby/1.9.1/webrick/httpserver.rb:70:in `run' /Users/tammam56/.rvm/rubies/ruby-1.9.1-p378/lib/ruby/1.9.1/webrick/server.rb:183:in `block in start_thread' Honestly I'm not sure where to start debugging for this. Is it because I'm using Ruby 1.9? some people seem to be having trouble with Authlogic and Ruby 1.9: http://isitruby19.com/authlogic Please advise me how to go about solving/debugging this issues? Thanks, Tam

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• Build a gem with native extension (Gem::Installer::ExtensionBuildError)

  - by Arnaud Leymet

  I have the following configuration: uname -a : Linux 2.6.24.2 i686 GNU/Linux (Ubuntu) ruby -v : ruby 1.9.0 (2007-12-25 revision 14709) [i486-linux] rails -v : Rails 3.0.0.beta3 gem -v : 1.3.5 rake --version : rake, version 0.8.7 make -v : GNU Make 3.81 gem env : RUBYGEMS VERSION: 1.3.5 RUBY VERSION: 1.9.0 (2007-12-25 patchlevel 0) [i486-linux] INSTALLATION DIRECTORY: /usr/lib/ruby1.9/gems/1.9.0 RUBY EXECUTABLE: /usr/bin/ruby1.9 EXECUTABLE DIRECTORY: /usr/bin RUBYGEMS PLATFORMS: ruby x86-linux GEM PATHS: /usr/lib/ruby1.9/gems/1.9.0 /root/.gem/ruby/1.9.0 GEM CONFIGURATION: :update_sources = true :verbose = true :benchmark = false :backtrace = false :bulk_threshold = 1000 REMOTE SOURCES: http://gems.rubyforge.org/ And when I try this simple command: gem install nokogiri Here is what I get: # gem install nokogiri Building native extensions. This could take a while... ERROR: Error installing nokogiri: ERROR: Failed to build gem native extension. /usr/bin/ruby1.9 extconf.rb checking for iconv.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/usr/include,/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for libxml/parser.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/usr/include,/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for libxslt/xslt.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/usr/include,/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for libexslt/exslt.h in /opt/local/include/,/opt/local/include/libxml2,/opt/local/include,/opt/local/include,/opt/local/include/libxml2,/usr/local/include,/usr/local/include/libxml2,/usr/include,/usr/include/libxml2,/usr/include,/usr/include/libxml2... yes checking for xmlParseDoc() in -lxml2... yes checking for xsltParseStylesheetDoc() in -lxslt... yes checking for exsltFuncRegister() in -lexslt... yes checking for xmlRelaxNGSetParserStructuredErrors()... yes checking for xmlRelaxNGSetParserStructuredErrors()... yes checking for xmlRelaxNGSetValidStructuredErrors()... yes checking for xmlSchemaSetValidStructuredErrors()... yes checking for xmlSchemaSetParserStructuredErrors()... yes creating Makefile make cc -I. -I/usr/include/libxml2 -I/usr/include -I/usr/include/ruby-1.9.0/i486-linux -I/usr/include/ruby-1.9.0 -I. -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS -DHAVE_XMLRELAXNGSETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETVALIDSTRUCTUREDERRORS -DHAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS -I/opt/local/include/ -I/opt/local/include/libxml2 -I/opt/local/include -D_FILE_OFFSET_BITS=64 -fPIC -fno-strict-aliasing -g -fPIC -g -DXP_UNIX -O3 -Wall -Wcast-qual -Wwrite-strings -Wconversion -Wmissing-noreturn -Winline -o xml_document_fragment.o -c xml_document_fragment.c In the included file starting at ./nokogiri.h:75, From ./xml_document_fragment.h:4, From xml_document_fragment.c:1: ./xml_document.h:5:16: error: st.h : No file or folder with this type make: *** [xml_document_fragment.o] Error 1 Gem files will remain installed in /usr/lib/ruby1.9/gems/1.9.0/gems/nokogiri-1.4.1 for inspection. Results logged to /usr/lib/ruby1.9/gems/1.9.0/gems/nokogiri-1.4.1/ext/nokogiri/gem_make.out The "gem_make.out" file contains the exact same information as described above. If I try with another gem: gem install gherkin Here is what I get: u# gem install gherkin Building native extensions. This could take a while... ERROR: Error installing gherkin: ERROR: Failed to build gem native extension. /usr/bin/ruby1.9 extconf.rb checking for main() in -lc... yes creating Makefile make cc -I. -I/usr/include/ruby-1.9.0/i486-linux -I/usr/include/ruby-1.9.0 -I. -D_FILE_OFFSET_BITS=64 -fPIC -fno-strict-aliasing -g -fPIC -o gherkin_lexer_ar.o -c gherkin_lexer_ar.c /Users/aslakhellesoy/scm/gherkin/tasks/../ragel/i18n/ar.c.rl:11:16: erreur: re.h : Aucun fichier ou dossier de ce type make: *** [gherkin_lexer_ar.o] Erreur 1 Gem files will remain installed in /usr/lib/ruby1.9/gems/1.9.0/gems/gherkin-1.0.30 for inspection. Results logged to /usr/lib/ruby1.9/gems/1.9.0/gems/gherkin-1.0.30/ext/gherkin_lexer_ar/gem_make.out In fact whenever I try to install a gem with native extension, I get the same type of error. Would that ring a bell to anyone?

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• Ruby 1.8.7 compatibility

  - by Sebastian

  I had a exception when I switch to Ruby 1.8.7 on Snow Leopard ArgumentError: wrong number of arguments (1 for 0) /Library/Ruby/Gems/1.8/gems/activerecord-1.15.5/lib/active_record/connection_adapters/abstract/quoting.rb:27:in 'to_s' /Library/Ruby/Gems/1.8/gems/activerecord-1.15.5/lib/active_record/connection_adapters/abstract/quoting.rb:27:in 'quote' /Library/Ruby/Gems/1.8/gems/activerecord-1.15.5/lib/active_record/connection_adapters/mysql_adapter.rb:190:in 'quote' /Library/Ruby/Gems/1.8/gems/activerecord-1.15.5/lib/active_record/base.rb:2042:in 'quote_value' /Library/Ruby/Gems/1.8/gems/activerecord-1.15.5/lib/active_record/base.rb:2034:in 'attributes_with_quotes' Application uses Rails 1.2.5: there is no chance to update rails in this app. Somebody have solution?

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• Running Ruby app on Apache

  - by TandemAdam

  I have been learning Ruby lately, and I want to upload a test web application to my server. But I can't figure out how to get it to run on my shared hosting. My Hosting Details Shared Hosting with JustHost (see here for list of features) OS: Linux Apache: 2.2.11 cPanel: 11.25.0-STABLE No SSH access. Can install Ruby Gems. Can't install Apache modules. Can "Manage Ruby on Rails Applications" through cPanel. Mongrel gem is installed. I built the following simple HelloWorld Ruby Rack app using Sinatra: #!/usr/bin/ruby ruby require 'rubygems' require 'sinatra' get '/hi' do "Hello World!" end I just can can't figure out how to "start" the application. Do I need to tell Mongrel (or maybe Apache) that the application exists somehow? How do I start this app running? I am happy to provide more info if needed.

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• Ruby: Parse Excel 95-2003 files?

  - by Larry K

  Is there a way to read Excel 97-2003 files from Ruby? Background I'm currently using the Ruby Gem parseexcel -- http://raa.ruby-lang.org/project/parseexcel/ But it is an old port of the perl module. It works fine, but the latest format it parses is Excel 95. And guess what? Excel 2007 will not produce the Excel 95 format. John McNamara has taken over duties as the maintainer for the Perl Excel parser, see http://search.cpan.org/~jmcnamara/Spreadsheet-ParseExcel-0.55/lib/Spreadsheet/ParseExcel.pm The current version will parse Excel 95-2003 files. But is there a port to Ruby? My other thought is to build some Ruby to Perl glue code to enable use of the Perl library itself from Ruby. Eg, see http://stackoverflow.com/questions/451636/whats-the-best-way-to-export-utf8-data-into-excel/620612#620612 (I think it would be much faster to write the glue code than to port the parser.) Thanks, Larry

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• Why is Python used for high-performance/scientific computing (but Ruby isn't)?

  - by Cyclops

  There's a quote from a PyCon 2011 talk that goes: At least in our shop (Argonne National Laboratory) we have three accepted languages for scientific computing. In this order they are C/C++, Fortran in all its dialects, and Python. You’ll notice the absolute and total lack of Ruby, Perl, Java. It was in the more general context of high-performance computing. Granted the quote is only from one shop, but another question about languages for HPC, also lists Python as one to learn (and not Ruby). Now, I can understand C/C++ and Fortran being used in that problem-space (and Perl/Java not being used). But I'm surprised that there would be a major difference in Python and Ruby use for HPC, given that they are fairly similar. (Note - I'm a fan of Python, but have nothing against Ruby). Is there some specific reason why the one language took off? Is it about the libraries available? Some specific language features? The community? Or maybe just historical contigency, and it could have gone the other way?

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• Which PHP framework is closest to Ruby on Rails? CakePHP? CodeIgniter?

  - by Mike Duncan

  I'm going to be switching back and forth between Ruby on Rails projects and some as-of-yet undecided PHP MVC framework projects. Which of the PHP MVC frameworks out there (CakePHP, CodeIgniter?, others?) is most similar to Ruby on Rails in that the most conventions, locations, workflows, etc are preserved? I'm looking for the similarity in the way things are done such as directory structures, conventions, etc, not a pros vs cons in speed, extra features, etc.

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• Search Engine Optimization Basics For Your Home Business Website

  If you are really serious about achieving success with your home business then you need to learn some search engine optimization basics. While the more technical aspects of this can be very intimidating, the basics can be very simple to understand and could help you to get better ranking, and generate more traffic to your site.

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• Error installing geoip_city gem

  - by tomeara

  I keep getting an error when trying to install the geoip_city gem. I've already installed the GeoIP C library to /opt/GeoIP, but the gem doesn't seem to pick it up. I've tried: sudo gem install geoip_city -- --with-geoip-dir=/opt/GeoIP sudo gem install geoip_city -- --with-geoip-lib=/opt/GeoIP/lib sudo gem install geoip_city -- --with-geoip-dir=/opt/GeoIP --with-geoip-lib=/opt/GeoIP/lib all of which output this error: Building native extensions. This could take a while... ERROR: Error installing geoip_city: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb --with-geoip-lib=/opt/GeoIP/lib checking for GeoIP_record_by_ipnum() in -lGeoIP... no you must have geoip c library installed! *** extconf.rb failed *** Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby --with-geoip-dir --without-geoip-dir --with-geoip-include --without-geoip-include=${geoip-dir}/include --with-geoip-lib=${geoip-dir}/lib --with-GeoIPlib --without-GeoIPlib Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/geoip_city-0.2.0 for inspection. Results logged to /Library/Ruby/Gems/1.8/gems/geoip_city-0.2.0/gem_make.out

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• Share on Facebook, Retweet, etc, buttons in straight Ruby gem?

  - by Alexandre

  Notice those buttons atop http://techcrunch.com/2010/04/04/he-even-makes-coldplay-sound-fun/ for sharing the url on social networks? I want to do something very very similar for a site I'm building. ShareThis offers a widget that does the same thing but it's branded and external. I'm looking for a pure Ruby solution. A gem containing a module that could be included in a Rails ApplicationHelper class would be perfect. Suggestions appreciated before I go reinventing the wheel!

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• How to store Ruby method references in a database?

  - by Mad Wombat

  I am writing my first rails app. It needs to aggregate some data from multiple sites and for each site I have a unique way of getting the data (some provide RSS, some JSON, for some I scrape the HTML etc.). These will run on schedule, probably as a rake task from cron. It seems logical to store the sites and relevant information in a model, but I am not sure where to put unique data retrieval methods. Do I store method names in the model? Do I just name the methods the same as site name and call them that way? Basically, I need a way to read a list of sites and call appropriate method for each site. What is the Ruby on Rails way to do it?

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• can't activate rack problem while install spree commerce

  - by art

  I install spree version 0.9.4 with gem install spree and run a set up command spree mystore and get this errors messages. Have anybody experienced this whether in spree or not ? D:\Workspaces>spree mystore C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/rubygems.rb:280:i n `activate': can't activate rack (>= 1.0.1, runtime) for ["spree-0.9.4"], alrea dy activated rack-1.0.0 for ["actionpack-2.3.5", "rails-2.3.5", "spree-0.9.4"] ( Gem::LoadError) from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:296:in `activate' from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:295:in `each' from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:295:in `activate' from C:/Program Files/BitNami RubyStack/ruby/lib/ruby/site_ruby/1.8/ruby gems.rb:68:in `gem' from C:/Program Files/BitNami RubyStack/ruby/bin/spree:18 Thanks

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• Get In That DB! Parsing CSV Using Ruby...

  - by keruilin

  I have a CSV file formatted just like this: name,color,tasty,qty apple,red,true,3 orange,orange,false,4 pear,greenish-yellowish,true,1 As you can see, each column in the Ruby OO world represents a mix of types -- string, string, boolean, int. Now, ultimately, I want to parse each line in the file, determine the appropriate type, and insert that row into a database via a Rails migration. For ex: Fruit.create(:name => 'apple', :color => 'red', :tasty => true, :qty => 3) Help!

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• How to deal with array of checkbox values in Ruby 1.9.1?

  - by Ola Tuvesson

  In Ruby 1.9.1 strings are no longer enumerable and string.each is undefined. This causes a problem when parsing values for an array of generated checkboxes since the field value, when submitted, becomes an array of strings. For example: <% for map in Map.find(:all) %> <%= check_box_tag "listing[map_ids][]", map.id %> <%= map.title %> <% end %> This will result in an error, undefined method `each' for "1":String, in process_parameter_filter because map_ids is being passed as "map_ids"=["1","2"] (if checkboxes with values 1 and 2 have been checked that is). What is the recommended way to fix this?

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