zdennis/ar-extensions — pull request #19 by soey (2012-08-01 09:27:47+00:00)
Title: Simply adds mysql2 adapter compatibility to the adapter extension and import module 

This comes in useful when using mysql2 Gem with Rails 2.x. (You can't use activerecord-import gem in this case). The changes are very straightforward and could easily be also taken over to the other ar-extension modules. Just use the dynamically set MYSQL_ADAPTER_CLASS for the mixins instead of ActiveRecord::ConnectionAdapters::MysqlAdapter directly.