ActiveAdmin Sortable Tree

This gem adds a tree and a list view to your ActiveAdmin resource index, both sortable via drag’n’drop.

• Gemfile:

  gem "activeadmin-sortable-tree", :github => "nebirhos/activeadmin-sortable-tree", :branch => "master"
  

WARNING! Not compatible with neo/activeadmin-sortable

• Admin (eg. app/admin/page.rb):

  ActiveAdmin.register Page do
    sortable tree: true
  
    index :as => :sortable do
      label :title # item content
      default_actions
    end
  end
  

• Model: activeadmin-sortable-tree is agnostic to the tree implementation. All you have to do is expose a sorting attribute and a few tree methods (:parent, :children and :roots). Let’s say you use Ancestry:

  class Page < ActiveRecord::Base
    attr_accessible :title, :body, :position
    has_ancestry :orphan_strategy => :rootify
  end
  

  You can configure these methods if you need:

  ActiveAdmin.register Page do
    sortable tree: true,
             max_levels: 0, # infinite indent levels
             protect_root: false, # allow root items to be dragged
             sorting_attribute: :position,
             parent_method: :parent,
             children_method: :children,
             roots_method: :roots
    ...
  end

• Admin (eg. app/admin/page.rb):

  ActiveAdmin.register Page do
    sortable
  
    index :as => :sortable do
      label :title # item content
      default_actions
    end
  end
  

• Model: Sortable list assumes you have a :position field in your resource. Of course it’s configurable:

  ActiveAdmin.register Page do
    sortable tree: false, # default
             sorting_attribute: :my_position_field
    ...
  end

Currently supports only IndexAsBlock, more to come!

• Admin (eg. app/admin/page.rb):

  ActiveAdmin.register Page do
    sortable
  
    index :as => :block do |page|
      # item content
    end
  end
  

• Model: Same as list view (see above)

To implement "Add Subcategory" in the index view,
   STEP 1:Create the below method in the resource file
       ActiveAdmin.register ResourceModel do
               ...
       member_action :new_child do
           //Code to display Add New [Child Resource] form
           //params[:id] is the parent object id
           //Create the corresponding form in app/views/admin/...
       end
               ...
   end

   STEP 2:Add Label to Locales en.yml
       add_subcategory: "Add Subcategory [Text or html entity]"

Copyright © 2013 Francesco Disperati, Cantiere Creativo. See the file MIT-LICENSE for details.