pagination - Ruby on Rails will_paginate an array

Question

I was wondering if someone could explain how to use will_paginate on an array of objects?

For example, on my site I have an opinion section where users can rate the opinions. Here's a method I wrote to gather the users who have rated the opinion:

def agree_list
  list = OpinionRating.find_all_by_opinion_id(params[:id])
  @agree_list = []
  list.each do |r|
    user = Profile.find(r.profile_id)
    @agree_list << user
  end
end

Thank you

Answer 1

will_paginate 3.0 is designed to take advantage of the new ActiveRecord::Relation in Rails 3, so it defines paginate only on relations by default. It can still work with an array, but you have to tell rails to require that part.

In a file in your config/initializers (I used will_paginate_array_fix.rb), add this

require 'will_paginate/array'

Then you can use on arrays

my_array.paginate(:page => x, :per_page => y)