When I define the User has_many meetings, it automatically creates a "user_id" key/value pair to relate to the User collections. Except I can't run any mongo_mapper finds using this value, without it returning nil or [].

Meeting.first(:user_id => "1234")

Meeting.all(:user_id => "1234")

Meeting.find(:user_id => "1234")

All return nil. Is there another syntax? Basically I can't run a query on the automatically generated associative ObjectId.

# Methods

class User
  include MongoMapper::Document

  key :user_name, String, :required => true
  key :password, String

  many :meetings
end

class Meeting
  include MongoMapper::Document

  key :name, String, :required => true
  key :count, Integer, :default => 1
end


# Sinatra

get '/add' do
  user = User.new
  user.meetings  "foobar") #should read: Meeting.new(:name => "foobar")
  user.save
end

get '/find' do
  test = Meeting.first(:user_id => "4b4f9d6d348f82370b000001") #this is the _id of the newly create user
  p test # WTF! returns []
end