chokes on 'mongo' gem in 1.9 - due to silently rescuing LoadError ?

[davidlee]

[ davidlee /tmp/wtf ]  # cat Gemfile 
disable_system_gems

gem 'mongo'

source 'http://gemcutter.org'
source 'http://gems.rubyforge.org'
source 'http://gems.github.com'

[ davidlee /tmp/wtf ]  # cat init.rb
require './vendor/gems/environment'
Bundler.require_env

[ davidlee /tmp/wtf ]  # ruby init.rb 
/private/tmp/wtf/vendor/gems/gems/mongo-0.18/lib/mongo/types/objectid.rb:130:in `require': uninitialized constant Mongo::InvalidStringEncoding (NameError)
    from /private/tmp/wtf/vendor/gems/gems/mongo-0.18/lib/mongo/types/objectid.rb:130:in `'
    from /private/tmp/wtf/vendor/gems/gems/mongo-0.18/lib/mongo/types/objectid.rb:24:in `'
    from /private/tmp/wtf/vendor/gems/gems/mongo-0.18/lib/mongo/types/objectid.rb:21:in `'
    from /private/tmp/wtf/vendor/gems/gems/mongo-0.18/lib/mongo.rb:6:in `require'
    from /private/tmp/wtf/vendor/gems/gems/mongo-0.18/lib/mongo.rb:6:in `'
    from /private/tmp/wtf/vendor/gems/environment.rb:80:in `require'
    from /private/tmp/wtf/vendor/gems/environment.rb:80:in `gem'
    from /private/tmp/wtf/vendor/gems/../../Gemfile:3:in `require_env'
    from /private/tmp/wtf/vendor/gems/environment.rb:102:in `instance_eval'
    from /private/tmp/wtf/vendor/gems/environment.rb:102:in `require_env'
    from init.rb:2:in `
'

[ davidlee /tmp/wtf ]  # irb
ruby-1.9.1-p243 > require 'mongo'
 => true 
ruby-1.9.1-p243 > ^D%

[davidlee]

in my actual project it also spews blood and vomit under 1.8 - i just can't quite distill it as succinctly - FWIW.

[davidlee]

Actually, it seems not to be bundler's fault. After much pain, I discovered this is what's needed:

gem 'mongo', '= 0.18' # MUST BE THE **** SAME gem 'mongo_ext', '= 0.18' # AS THIS gem 'mongo_mapper', '= 0.6.6'

[shanna]

http://groups.google.com/group/mongomapper/browse_thread/thread/efb3b401abf15141