在Windows上的Rails錯誤：無法加載'active_record/connection_adapters/sqlite3_adapter'

Question

我有this問題的確切問題。我遵循了接受答案中給出的步驟。它按預期工作。但意外的是我得到這個錯誤運行應用程序：

Could not load 'active_record/connection_adapters/sqlite3_adapter'. Make sure that the adapter in config/database.yml is valid. If you use an adapter other than 'mysql', 'mysql2', 'postgresql' or 'sqlite3' add the necessary adapter gem to the Gemfile. 

我也附上截圖。

我的Gemfile有需要的依賴（sqlite3的）：

source 'https://rubygems.org' 


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails' 
gem 'rails', '4.1.6' 
# Use sqlite3 as the database for Active Record 
gem 'sqlite3' 
# Use SCSS for stylesheets 
gem 'sass-rails', '~> 4.0.3' 
# Use Uglifier as compressor for JavaScript assets 
gem 'uglifier', '>= 1.3.0' 
# Use CoffeeScript for .js.coffee assets and views 
gem 'coffee-rails', '~> 4.0.0' 
# See https://github.com/sstephenson/execjs#readme for more supported runtimes 
# gem 'therubyracer', platforms: :ruby 

# Use jquery as the JavaScript library 
gem 'jquery-rails' 
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks 
gem 'turbolinks' 
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder 
gem 'jbuilder', '~> 2.0' 
# bundle exec rake doc:rails generates the API under doc/api. 
gem 'sdoc', '~> 0.4.0',   group: :doc 

# Use ActiveModel has_secure_password 
# gem 'bcrypt', '~> 3.1.7' 

# Use unicorn as the app server 
# gem 'unicorn' 

# Use Capistrano for deployment 
# gem 'capistrano-rails', group: :development 

# Use debugger 
# gem 'debugger', group: [:development, :test] 

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem 
gem 'tzinfo-data', platforms: [:mingw, :mswin] 

，也是我的database.yml有需要的適配器（sqlite3的）：

# SQLite version 3.x 
# gem install sqlite3 
# 
# Ensure the SQLite 3 gem is defined in your Gemfile 
# gem 'sqlite3' 
# 
default: &default 
    adapter: sqlite3 
    pool: 5 
    timeout: 5000 

development: 
    <<: *default 
    database: db/development.sqlite3 

# Warning: The database defined as "test" will be erased and 
# re-generated from your development database when you run "rake". 
# Do not set this db to the same as development or production. 
test: 
    <<: *default 
    database: db/test.sqlite3 

production: 
    <<: *default 
    database: db/production.sqlite3 

那麼這裏是錯的？ 我的Ruby版本是4.1.6，我用gem install rails命令安裝了rails。所以它必須是最新的。

Answer 1

我將ruby版本更改爲2.0，並且全部都可以使用！因此，在撰寫此答案時，似乎ruby 2.1.0+在Windows上的Rails無法正常工作。