Honorable Sanders February 2016

Cannot load mysql2 gem

I've already seen some different answers, but none of these helped me...

This is the trick: I have to fix this without touching the Gemfile. I'm currently creating my working environment so that it matches the production server, so, I cannot modify the rails' code at all.

My OS: OSX 10.11

Ruby: ruby 2.0.0p643

Rails: 4.0.0

The gem is the Gemfile as gem 'mysql2'. There are no errors when doing bundle install, but when I try to rake db:migrate --trace this is the output:

rake aborted!
There was an error while trying to load the gem 'mysql2'.
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:80:in `rescue in block (2 levels) in require'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `each'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:72:in `block in require'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `each'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler/runtime.rb:61:in `require'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/bundler-1.11.2/lib/bundler.rb:99:in `require'
/Users/redar/redar/config/application.rb:7:in `<top (required)>'
/Users/redar/redar/Rakefile:4:in `require'
/Users/redar/redar/Rakefile:4:in `<top (required)>'
/Users/redar/.rvm/gems/ruby-2.0.0-p643/gems/rake-10.1.0/lib/rake/rake_module.rb:25:in `load'
/User        

Answers


AndyV February 2016

Try

bundle exec rake db:migrate

This will make sure that you are executing "rake db:migrate" with the gems listed in the Gemfile loaded and available. If you run it without "bundle exec" you may be executing only with the system gems available.

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Asked in February 2016
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