Loading development environment (Rails 3.2.11)
[1] pry(main)> u = User.find_by(email: 'dante@aftership.com')
ArgumentError: wrong number of arguments (1 for 0)
from /Users/Dante/.rvm/gems/ruby-1.9.3-p385/gems/mongoid-3.0.22/lib/mongoid/extensions/array.rb:77:in `mongoize'
[2] pry(main)> u = User.where(email: 'dante@aftership.com')
=> #<Mongoid::Criteria
  selector: {"email"=>"dante@aftership.com"}
  options:  {}
  class:    User
  embedded: false>

[3] pry(main)> u = User.where(email: 'dante@aftership.com').first
ArgumentError: wrong number of arguments (1 for 0)
from /Users/Dante/.rvm/gems/ruby-1.9.3-p385/gems/mongoid-3.0.22/lib/mongoid/extensions/array.rb:77:in `mongoize'
[2] pry(main)>