Mongoid + YAML + Rails = Conflict
You get the following when you try to run your Rails app with Mongoid:
db_name must be a string or symbol C:/Ruby192/lib/ruby/gems/1.9.1/gems/mongo-1.3.1/lib/mongo/util/support.rb:50:in `validate_db_name'
You probably have RubyGems v1.5.0, which changes the default yaml parser to psych (as opposed to syck), which doesn’t like
:<< in yaml files.
Add the following to the top of your config/environment.rb:
require 'yaml' YAML::ENGINE.yamler= 'syck'
… or perhaps you could just tweak your YAML to make psych happy. I don’t know what-the-hell I’m doing, so I took the easy way out.
Feel free to share better alternatives.
Thanks go to the chaps on this Mongoid forum thread.