Mongoid::Orderable is a ordered list implementation for your mongoid models.
- It uses native mongo batch increment feature
- It supports assignable api
- It proper assingns position while moving document between scopes
gem 'mongoid_orderable'
Gem has the same api as others. Just include Mongoid::Orderable into your model and call orderable method.
class Item
include Mongoid::Document
include Mongoid::Orderable
# belongs_to :group
# orderable
# orderable :scope => :group, :column => :pos
# orderable :scope => lambda { |document| where(:group_id => document.group_id) }
# orderable :index => false # this one if you want specify indexes manually
end
item.move_to 2 # just change position
item.move_to! 2 # and save
item.move_to = 2 # assignable method
# symbol position
item.move_to :top
item.move_to :bottom
item.move_to :higher
item.move_to :lower
# generated methods
item.move_to_top
item.move_to_bottom
item.move_higher
item.move_lower
Fork && Patch && Spec && Push && Pull request.
Mongoid::Orderable is released under the MIT license.