Проблемы и ошибки в работе с Ruby и RoR | Perl, Assembler, Си

Проблема с gem mysql2 для Ruby on Rails 3.2 под Windows

Следующая проблема возникла с gem mysql2. При запуске команды rake db:create система возвращала ошибку:

C:\Documents and Settings\user\ruby\app>rake db:create
rake aborted!
cannot load such file -- mysql2/2.0/mysql2
C:/Documents and Settings/user/ruby/app/config/application.rb:7:in `<top
(required)>'
C:/Documents and Settings/user/ruby/app/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)

C:\Documents and Settings\user\ruby\app>rake db:create

rake aborted!

cannot load such file -- mysql2/2.0/mysql2

C:/Documents and Settings/user/ruby/app/config/application.rb:7:in `<top

(required)>'

C:/Documents and Settings/user/ruby/app/Rakefile:5:in `<top (required)>'

(See full trace by running task with --trace)

Проблема с установкой ruby gem json для Ruby on Rails 3.2 под Windows

В процессе создания своего первого приложения под Ruby on Rails, столкнулась с невозможностью выполнить команду bundle install. Она выдавала ошибку:

Please update your PATH to include build tools or download the DevKit

from 'http://rubyinstaller.org/downloads' and follow the instructions

at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'

An error occurred while installing json (1.8.0), and Bundler cannot continue.

Make sure that `gem install json -v '1.8.0'` succeeds before bundling.

Please update your PATH to include build tools or download the DevKit

from 'http://rubyinstaller.org/downloads' and follow the instructions

at 'http://github.com/oneclick/rubyinstaller/wiki/Development-Kit'

An error occurred while installing json (1.8.0), and Bundler cannot continue.

Make sure that `gem install json -v '1.8.0'` succeeds before bundling.