will_paginate helper doesn't work with has_and_belongs_to_many associations.

Here is how my Product model looks like:

class Product < ActiveRecord::Base has_and_belongs_to_many :categories, :join_table => "products_categories" end

In my controller, i have done this: @products = @current_category.products.paginate :per_page => 12, :page => params[:page]

will_paginate helper doesn't show pages in the view. If manually pass page param in url, it work just fine. But will_paginate helper does not show the pages list and next and prev links.