Paginated Array

Old blog posts I never published, except I have now #8

Came across a situation whereby we expected

Artist.where(:a => 'b').paginate(:page => 1)

class PaginatedArray < Array

  attr_reader :current_page, :per_page, :total_entries

  def initialize(values = [], options = {})
    @current_page = options[:page] || 1
    @per_page = options[:per_page] || 20
    @total_entries = values.size

    start = (@current_page - 1) * @per_page
    finish = start + (@per_page - 1)

    super(values[start, finish])
  end

end

Artist.where(:a => 'b').paginate(:page => 1)
Artist.where(:a => 'b').to_a.paginate(:page => 1)