mm_sortable_item

This is a quick little MongoMapper plugin that provides some basic acts-as-list style functionality on mongo documents. By default things are added to the list bottom.

In the gemfile:

gem 'mm_sortable_item'

In your model:

  class SortableDocument
    include MongoMapper::Document
    plugin MongoMapper::Plugins::SortableItem
    
    list_scope_column :parent_id # optional if you want to scope the lists
    
    # ...
  end

Then you have access to some helpful methods, such as:

• .in_order retrieves the list items in order
• .in_list(id) retrieves the items scoped as you wish
• .reorder(orderd_array_of_ids) sets the positions of the given ids in order
• object.set_position(position) inserts object into the list at the given position

John Nunemaker for mongo_mapper itself, as well as a start down the road of how to implement this. It's definitely not as "fully functional" as acts_as_list, but it does everything I need :).

• Author: Matt Wilson (mwilson@agoragames.com)
• GitHub: http://github.com/hypomodern