Rails paginate for collections

To generate pagination for your collections, add the following action to your controller.

def paginate_collection(collection, options = {})
  default_options = {:per_page => 10, :page => 1}
  options = default_options.merge options
  pages = Paginator.new self, collection.size, options[:per_page], options[:page]
  first = pages.current.offset
  last = [first + options[:per_page], collection.size].min
  slice = collection[first...last]
  return [pages, slice]
end

Now you can call the custom paginate_collection in your controller as follows.

@female_students = Student.find(:all).select do |student|
    student.sex == 'female'
end
@student_pages, @students = paginate_collection @female_students, :per_page => 10