LoadError：无法在rake db：create上加载此类文件mysql2 / mysql2

Question

当我运行rake db:create ，出现以下错误：

LoadError: cannot load such file -- mysql2/mysql2
/Users/vitorqueiroz/dev/pipeline/config/application.rb:10:in `<top (required)>'
/Users/vitorqueiroz/dev/pipeline/Rakefile:5:in `<top (required)>'
(See full trace by running task with --trace)

我必须手动安装mysql2 gem，因为gemfile指定了版本“ 0.3.20”

我运行了gem install mysql2 -v '0.3.20' -- --srcdir=/usr/local/include/mysql

捆绑安装运行良好，并且说所有东西都已安装。

bundle list mysql2评估为：

/Users/vitorqueiroz/.rbenv/versions/2.3.6/lib/ruby/gems/2.3.0/gems/mysql2-0.3.20

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有其他选择吗？

Answer 1

你可以试试

bundle exec rake db:create

确保已装入捆绑的宝石。

https://bundler.io/man/bundle-exec.1.html