mysql - Windows 7 上 ruby​​ on rails 3 的问题

Question

我在 win7 64 位和 mysql 5.1 上运行 rails 3 时遇到错误。

与mysql2有关。任何帮助都会有所帮助。

C:\mobile_projects>rails new test2 -d mysql
      create  
      create  README
      create  Rakefile
      create  config.ru
      create  .gitignore
      create  Gemfile
      create  app
      create  app/controllers/application_controller.rb
      create  app/helpers/application_helper.rb
      create  app/mailers
      create  app/models
      create  app/views/layouts/application.html.erb
      create  config
      create  config/routes.rb
      create  config/application.rb
      create  config/environment.rb
      create  config/environments
      create  config/environments/development.rb
      create  config/environments/production.rb
      create  config/environments/test.rb
      create  config/initializers
      create  config/initializers/backtrace_silencers.rb
      create  config/initializers/inflections.rb
      create  config/initializers/mime_types.rb
      create  config/initializers/secret_token.rb
      create  config/initializers/session_store.rb
      create  config/locales
      create  config/locales/en.yml
      create  config/boot.rb
      create  config/database.yml
      create  db
      create  db/seeds.rb
      create  doc
      create  doc/README_FOR_APP
      create  lib
      create  lib/tasks
      create  lib/tasks/.gitkeep
      create  log
      create  log/server.log
      create  log/production.log
      create  log/development.log
      create  log/test.log
      create  public
      create  public/404.html
      create  public/422.html
      create  public/500.html
          create  public/favicon.ico
      create  public/index.html
      create  public/robots.txt
      create  public/images
      create  public/images/rails.png
      create  public/stylesheets
      create  public/stylesheets/.gitkeep
      create  public/javascripts
      create  public/javascripts/application.js
      create  public/javascripts/controls.js
      create  public/javascripts/dragdrop.js
      create  public/javascripts/effects.js
      create  public/javascripts/prototype.js
      create  public/javascripts/rails.js
      create  script
      create  script/rails
      create  test
      create  test/fixtures
      create  test/functional
      create  test/integration
      create  test/performance/browsing_test.rb
      create  test/test_helper.rb
      create  test/unit
      create  tmp
      create  tmp/sessions
      create  tmp/sockets
      create  tmp/cache
      create  tmp/pids
      create  vendor/plugins
      create  vendor/plugins/.gitkeep

C:\mobile_projects>cd test2

C:\mobile_projects\test2>rails generate scaffold testtbl desc:string legsnumber:string
[31mCould not find gem 'mysql2 (>= 0, runtime)' in any of the gem sources listed in your Gemfile.[0m

C:\mobile_projects\test2>

Answer 1

您提供的输出中的最后一行清楚地表明了您缺少的内容。它提到未安装 gem mysql2，您应该运行 bundle install 来安装它们。

你没有提到你是如何获得那个版本的 Ruby 的，但我假设你安装了 Rubyinstaller包。

现在，mysql2 gem 目前缺少适用于 Windows 的二进制文件(这是我现在正在做的事情)。

我有两个建议:要么使用 sqlite3(它应该与 RubyInstaller 一起开箱即用，要么特别是 RailsInstaller 包。

或者按照与 RubyInstaller wiki 中发布的说明类似的说明安装和编译 mysql2 gem关于安装和编译 MySQL 适配器。

希望所有这些都能有所帮助或有意义。