uninitialized constant MysqlCompat::MysqlRes (using mms2r gem)

Question

moved a rails app of mine onto a new server and had to install a few gem dependencies. However, after installing the mysql gem I get the error, uninitialized constant Mysql

Answer 1

sudo env ARCHFLAGS="-arch x86_64" gem install mysql

Dmg package from the mysql site an ddone!

Answer 2

sudo apt-get install libmysqlclient15-dev

Answer 3

sudo gem install mysql -v 2.7 -- --with-mysql-config=/usr/local/mysql/bin/mysql_config

Worked perfectly for me :)

Answer 4

If you have mysql 5.5 follow this: http://geryit.com/blog/2011/01/installing-mysql-with-rails-on-mac-os-x-snow-leopard/

FTR: If I didn't need some stupid rep to upvote I would have upvoted the identitcal answer, consider this my upvote.

Answer 5

With mysql gem (2.8.1) I was getting

uninitialized constant MysqlCompat::MysqlRes

Using -v 2.7 make it work perfectly and for those who used Homebrew to install mysql

sudo gem install mysql -v 2.7 -- --with-mysql-config=/usr/local/Cellar/mysql/5.1.48/bin/mysql_config

Note that you can change mysql version if needed.

Answer 6

Downgrade (from 5.9) to mysql 5.1 helped on 10.6 ... running both mysql and mysql2 gems.