無法在rails上創建ruby數據庫

Question

我剛剛開始使用ruby on rails，並且仍然忙於將所有設置都運行起來..我遇到的問題是它一直說mysql2不是bundle的一部分..我有了明顯GOOGLE了它，但解決方案似乎沒有工作

sudo gem install mysql2 

等。

的東西，我得到的是

$耙分貝：創建 耙中止！ 請安裝mysql2適配器：gem install activerecord-mysql2-adapter（mysql2不是該軟件包的一部分，將它添加到Gemfile中。） /Library/Ruby/Gems/1.8/gems/bundler-1.3.2/lib/bundler/rubygems_integration.rb:214 ：gem' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/mysql2_adapter.rb:3 /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in要求' /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:251:in require' /Library/Ruby/Gems/1.8/gems/activesupport-3.2.12/lib/active_support/dependencies.rb:236:in load_dependency' /Library/Ruby/Gems/1.8/gems/activesupport -3.2.12/lib/active_support/dependencies.rb：251：在require' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:50:in resolve_hash_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:29 ：spec' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/connection_adapters/abstract/connection_specification.rb:130:in establish_connection' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:90:in create_database' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62 /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62:in each' /Library/Ruby/Gems/1.8/gems/activerecord-3.2.12/lib/active_record/railties/databases.rake:62 任務：TOP => db：create （請參閱完整跟蹤--trace）

任何人都知道我的解決方案嗎？ （PS我看到很多人說，它已被添加到創業板上市的配置，但是怎麼樣？）

Answer 1

你應該確保你的Gemfile（位於項目的根目錄）包括

gem 'mysql2' 

然後運行bundle install來安裝它。

我相信activerecord-mysql2-adapter寶石安裝爲依賴，但你也可以添加

gem 'activerecord-mysql2-adapter' 

如果仍要求它。