number.rb

class Number
  include Mongoid::Document

  field :number, :type => Integer
end

Number.delete_all
Number.create(:number => 50)

Number.where(
  :number.gte => 100,
  :number.lte => 10000
).count


# => 1
# Should be 0
#
# Where Criteria is:
#   #<Mongoid::Criteria:0x102eb33b0 @selector={:number=>{"$gte"=>100}}, @klass=Number, @options={}, @documents=[]>