运行rails script/generate scaffold命令时找不到gem'mysql2 ..'

Question

我收到了这个错误:

Could not find gem 'mysql2 (>= 0, runtime)' in any of the gem sources.
Try running `bundle install`.

在尝试时:

rails script/generate scaffold post title:string

我在mac osx上,rails 1.8.7,3.0

Answer 1

在ubuntu上,您可能需要先为mysql安装库.

sudo apt-get install libmysqlclient-dev

然后你可以安装

gem install mysql2

甚至更好的方法是使用rvm

rvm gem install mysql2