In JRuby-on-Rails tutorial at Rails Conf 2009, Nick Sieger shared a nice little tip on how to configure “database.yml” to be usable with both JRuby and MRI:
| <% jdbc = defined?(JRUBY_VERSION) ? ‘jdbc’ : ” %> development: adapter: <%= jdbc %>mysql encoding: utf8 reconnect: false database: myapp_development pool: 5 username: root password: socket: /tmp/mysql.sock # … |
“JRUBY_VERSION” is defined only if your using JRuby and so the right database adapter is picked up accordingly.
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