mysql - 为什么我的 rake db 是 :migrate failing to respond?

Question

我尝试输入 rake db:migrate 来创建迁移，但我的 rake 已中止并给出了此语句。您能解释一下为什么会发生这种情况吗？

Muhammeds-MacBook-Pro:simple_cms muhammedz786$ rake db:migrate
rake aborted!
dlopen(/Users/muhammedz786/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/extensions/x86_64-darwin-13/2.1.0-static/mysql2-0.3.14/mysql2/mysql2.bundle, 9): Library not loaded: libmysqlclient.18.dylib
  Referenced from: /Users/muhammedz786/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/extensions/x86_64-darwin-13/2.1.0-static/mysql2-0.3.14/mysql2/mysql2.bundle
  Reason: image not found - /Users/muhammedz786/.rbenv/versions/2.1.0/lib/ruby/gems/2.1.0/extensions/x86_64-darwin-13/2.1.0-static/mysql2-0.3.14/mysql2/mysql2.bundle
/Users/muhammedz786/rails_application/simple_cms/config/application.rb:7:in `<top (required)>'
/Users/muhammedz786/rails_application/simple_cms/Rakefile:4:in `<top (required)>'
(See full trace by running task with --trace)

Answer 1

您的 mysql 软件包未针对该给定命令正确安装

sudo apt-get install mysql-server mysql-common mysql-client

如果这不起作用，请安装这个

sudo apt-get install libmysql-ruby libmysqlclient-dev