Paginated collection doesn't forward the selector method to underlying object

[raphaelcm]

Ruby 1.9.3, Rails 3.2, Mongoid 3.1, will_paginate 3.0.4

I should still be able to use the selector method on a collection, even when I've paginated it, but I can't:

Not paginated, it works fine:

1.9.3p392 :008 > Bonus.top_level.selector
 => {"parent_bonus_id"=>nil}

Paginated, it blows up:

1.9.3p392 :009 > Bonus.top_level.paginate(:per_page => 15).selector
NoMethodError: undefined method `selector' for #<WillPaginate::Collection:0x007fd22ce41a28>

[mislav]

Did you require "will_paginate/mongoid" manually before trying to use pagination? Because you should do that; it isn't automatic. Try it and let me know if it's different