ruby-on-rails – Sqlite3 gem未加载,gem安装并在项目中指定

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因此,在我寻求使用 ruby dev环境的过程中,我遇到了一个似乎……让这个ruby菜鸟感到困惑的问题.

执行rails服务器时,它会按预期启动,但是当您将localhost:3000放入标准Web浏览器时,它会回复以下内容

Specified ‘sqlite3’ for database adapter,but the gem is not loaded. Add gem 'sqlite3' to your Gemfile.

现在这里是令人困惑的部分.我安装了sqlite3(64位版本,因为这是我下载的,运行的是64位操作系统),由gem查询验证(这里是宝石的完整列表)

卸载和重新安装并不能解决手头的问题,但它确实安装顺利.另外我正在测试的项目的gemfile是folliwing

  1. source 'https://rubygems.org'
  2.  
  3. # Bundle edge Rails instead: gem 'rails',github: 'rails/rails'
  4. gem 'rails','4.0.0'
  5.  
  6. # Use sqlite3 as the database for Active Record
  7. gem 'sqlite3'
  8.  
  9. # Use SCSS for stylesheets
  10. gem 'sass-rails','~> 4.0.0'
  11.  
  12. # Use Uglifier as compressor for JavaScript assets
  13. gem 'uglifier','>= 1.3.0'
  14.  
  15. # Use CoffeeScript for .js.coffee assets and views
  16. gem 'coffee-rails','~> 4.0.0'
  17.  
  18. # See https://github.com/sstephenson/execjs#readme for more supported runtimes
  19. # gem 'therubyracer',platforms: :ruby
  20.  
  21. # Use jquery as the JavaScript library
  22. gem 'jquery-rails'
  23.  
  24. # Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
  25. gem 'turbolinks'
  26.  
  27. # Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
  28. gem 'jbuilder','~> 1.2'
  29.  
  30. group :doc do
  31. # bundle exec rake doc:rails generates the API under doc/api.
  32. gem 'sdoc',require: false
  33. end
  34.  
  35. # Use ActiveModel has_secure_password
  36. # gem 'bcrypt-ruby','~> 3.0.0'
  37.  
  38. # Use unicorn as the app server
  39. # gem 'unicorn'
  40.  
  41. # Use Capistrano for deployment
  42. # gem 'capistrano',group: :development
  43.  
  44. # Use debugger
  45. # gem 'debugger',group: [:development,:test]

正如你所看到的,很早就在Gemfile中指定了sqlite3,但是当我尝试加载主页时,无论出于何种原因,它就像它不存在一样.

此机器的详细信息如下所述:宝石部分中未提及:

Rails 4
Ruby 2
Windows 7的

以前有人遇到过这个吗?

解决方法

我也有这个问题.进入你的Gemfile.lock文件搜索sqlite3’条目.你会注意到它读取sqlite3(1.3.8-x86-mingw32). 将其更改为sqlite3(1.3.8-x64-mingw32),然后运行bundle install命令,一切都应该正常工作.

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