Rails的4.0.0 - GOT [否隐式转换的零转换成String＆QUOT; [英] Rails 4.0.0 - Got "no implicit conversion of nil into String"

问题描述

刚刚安装了一个全新的Rails 4.0.0应用程序，我得到这个错误（ https：//开头要点。 github.com/hartator/6404820 ）在 http://0.0.0.0:3000 ：

 不隐式转换的零转换成String

ActiveRecord的（4.0.0）的lib / active_record / connection_adapters / sqlite3_adapter.rb：24：在'初始化'
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters / sqlite3_adapter.rb：24：在'新'
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters / sqlite3_adapter.rb：24：在'sqlite3_connection
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：440：在'new_connection
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：450：在'checkout_new_connection
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：421：在'acquire_connection
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：356：在'挡在结账
/Users/asa/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in`mon_synchronize
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：355：在'结账'
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：265：在'块连接
/Users/asa/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in`mon_synchronize
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：264：在'连接'
ActiveRecord的（4.0.0）的lib / active_record / connection_adapters /抽象/ connection_pool.rb：546：在'retrieve_connection
ActiveRecord的（4.0.0）的lib / active_record / connection_handling.rb：79：在'retrieve_connection
ActiveRecord的（4.0.0）的lib / active_record / connection_handling.rb：53：在'连接'
 

我的database.yml： http://pastebin.com/JM5TNmNU

我还没有到香草轨code做任何事情。任何想法可能是什么问题？

使用：

• 的Rails 4.0.0
• 红宝石2.0.0p195
• 在山狮10.8.2

解决方案

这听起来像你sqlite3的宝石安装问题。尝试：

 宝石质朴的sqlite3
 

从RubyGems的文档：

  

宝石质朴

     

还原安装宝石原始状态从位于宝石缓存文件

     用法

 创业板原始[GEMNAME ...] [选项]
 

<一个href="http://guides.rubygems.org/command-reference/#gem_pristine">http://guides.rubygems.org/command-reference/#gem_pristine

Just installed a brand new Rails 4.0.0 app and I got this error (https://gist.github.com/hartator/6404820) on http://0.0.0.0:3000:

no implicit conversion of nil into String

activerecord (4.0.0) lib/active_record/connection_adapters/sqlite3_adapter.rb:24:in `initialize'
activerecord (4.0.0) lib/active_record/connection_adapters/sqlite3_adapter.rb:24:in `new'
activerecord (4.0.0) lib/active_record/connection_adapters/sqlite3_adapter.rb:24:in `sqlite3_connection'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:440:in `new_connection'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:450:in `checkout_new_connection'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:421:in `acquire_connection'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:356:in `block in checkout'
/Users/asa/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:355:in `checkout'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:265:in `block in connection'
/Users/asa/.rvm/rubies/ruby-2.0.0-p195/lib/ruby/2.0.0/monitor.rb:211:in `mon_synchronize'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:264:in `connection'
activerecord (4.0.0) lib/active_record/connection_adapters/abstract/connection_pool.rb:546:in `retrieve_connection'
activerecord (4.0.0) lib/active_record/connection_handling.rb:79:in `retrieve_connection'
activerecord (4.0.0) lib/active_record/connection_handling.rb:53:in `connection'

My database.yml: http://pastebin.com/JM5TNmNU

I haven't done anything yet to the vanilla rails code. Any idea what could be the issue?

Using:

• Rails 4.0.0
• Ruby 2.0.0p195
• Mountain Lion 10.8.2

解决方案

That sounds like a problem with your sqlite3 gem installation. Try:

gem pristine sqlite3

From the RubyGems documentation:

gem pristine

Restores installed gems to pristine condition from files located in the gem cache

Usage

gem pristine [GEMNAME ...] [options]

http://guides.rubygems.org/command-reference/#gem_pristine

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