geo_near

[DhruvaSagar]

ruby-1.9.2-p180 :031 > Person.geoNear([45, -3, 10], :pos)
NoMethodError: undefined method `from_point=' for #<Person:
0x000000023a0938>
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/mongoid-2.0.2/lib/
mongoid/attributes.rb:162:in `method_missing'
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/mongoid_geo-0.6.1/
lib/mongoid/geo/near.rb:71:in `block in query_result'
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/mongoid_geo-0.6.1/
lib/mongoid/geo/near.rb:67:in `map'
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/mongoid_geo-0.6.1/
lib/mongoid/geo/near.rb:67:in `query_result'
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/mongoid_geo-0.6.1/
lib/mongoid/geo/near.rb:34:in `geoNear'
from (irb):31
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/
rails/commands/console.rb:44:in `start'
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/
rails/commands/console.rb:8:in `start'
from /home/dhruva/.rvm/gems/ruby-1.9.2-p180/gems/railties-3.0.7/lib/
rails/commands.rb:23:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'

Here is my Model :
class Person
include Mongoid::Document
extend Mongoid::Geo::Near

field :location, :type => Array, :geo => true

geo_index :location
end