Question

由于mysql2

中发生错误，我无法运行Rails项目

这篇文章对我没有帮助：rake aborted! uninitialized constant Mysql2

此外，它在我的同事计算机上运行正常，因此项目本身的问题被排除在外。

这是控制台输出：

$ rails s
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:94:in `rescue in block (2 levels) in require': There was an error while trying to load the gem 'mysql2'. (Bundler::GemRequireError)
Gem Load Error is: uninitialized constant Mysql2::Client::SECURE_CONNECTION
Backtrace for gem load error is:
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2/client.rb:12:in `<class:Client>'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2/client.rb:2:in `<module:Mysql2>'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2/client.rb:1:in `<top (required)>'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2.rb:10:in `require'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/mysql2-0.3.14/lib/mysql2.rb:10:in `<top (required)>'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:91:in `require'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:91:in `block (2 levels) in require'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `each'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `block in require'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `each'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `require'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler.rb:106:in `require'
/home/duke/RubymineProjects/*******/*******/config/application.rb:7:in `<top (required)>'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `require'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `block in <top (required)>'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `tap'
/home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `<top (required)>'
script/rails:6:in `require'
script/rails:6:in `<main>'
Bundler Error Backtrace:
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:90:in `block (2 levels) in require'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `each'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:86:in `block in require'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `each'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler/runtime.rb:75:in `require'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/bundler-1.13.6/lib/bundler.rb:106:in `require'
        from /home/duke/RubymineProjects/********/********/config/application.rb:7:in `<top (required)>'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `require'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:53:in `block in <top (required)>'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `tap'
        from /home/duke/.rvm/gems/ruby-2.0.0-p648/gems/railties-3.2.15/lib/rails/commands.rb:50:in `<top (required)>'
        from script/rails:6:in `require'
        from script/rails:6:in `<main>'

我已经尝试过GitHub问题的每一条建议，但它根本没有帮助。

我尝试过Ruby 2.0.0,2.1.8,2.2.x
我的操作系统是Ubuntu 16.04
MySQL 5.6.16
ruby-mysql和libmysqlclient-dev都已安装

Answer 1

我必须将mysql2更新为0.3.21

未初始化的常量Mysql2 :: Client :: SECURE_CONNECTION

1 个答案: