one more try

Gemfile

@@ -35,6 +35,8 @@ gem 'ckeditor', '~> 4.3'
 gem 'mini_magick'
 gem 'video_info', '~> 2.7'
 gem 'acts_as_list'
+gem 'activeadmin_reorderable'
+gem 'active_admin-sortable_tree', "~> 2.0.0"
 
 group :development, :test do
   gem 'byebug', platform: :mri

Gemfile.lock

@@ -24,6 +24,11 @@ GEM
       erubis (~> 2.7.0)
       rails-dom-testing (~> 2.0)
       rails-html-sanitizer (~> 1.0, >= 1.0.3)
+    active_admin-sortable_tree (2.0.0)
+      activeadmin (>= 1.1)
+      coffee-rails
+      jquery-rails
+      sass (~> 3.1)
     activeadmin (2.0.0)
       arbre (~> 1.2, >= 1.2.1)
       formtastic (~> 3.1)
@@ -36,6 +41,7 @@ GEM
       sass (~> 3.4)
       sprockets (>= 3.0, < 4.1)
       sprockets-es6 (~> 0.9, >= 0.9.2)
+    activeadmin_reorderable (0.1.2)
     activejob (5.0.7.2)
       activesupport (= 5.0.7.2)
       globalid (>= 0.3.6)
@@ -318,7 +324,9 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  active_admin-sortable_tree (~> 2.0.0)
   activeadmin
+  activeadmin_reorderable
   acts_as_list
   awesome_print
   bootstrap-sass

app/admin/project_partials.rb

+ActiveAdmin.register ProjectPartial do
+
+  menu label: 'Project Partials' 
+  
+  reorderable
+  
+  controller do
+
+    def find_resource
+      scoped_collection.friendly.find(params[:id])
+    end
+
+  end
+end

app/admin/projects.rb

 ActiveAdmin.register Project do
 
+  config.sort_order = 'position_asc' # assuming Widget.insert_at modifies the `position` attribute
+  config.paginate   = false
+
+  reorderable
+
   menu label: proc{ I18n.t "active_admin.models.project.other" }
 
   filter :photo, label: I18n.t("active_admin.attributes.project.photo")
@@ -60,6 +65,7 @@ ActiveAdmin.register Project do
                   project_documents_attributes: [:id, :project_id, :document_uk, :document_en,
                                               :document_name_uk, :document_name_en, :_destroy])
     end
+
   end
   
   form html: { multipart: true } do |f|
@@ -260,11 +266,17 @@ ActiveAdmin.register Project do
         p.updated_at
       end
     end
-  end
-  
-  sidebar "Projects", only: :show do
-    attributes_table_for project.project_partials do
+    reorderable_table_for project.project_partials do
+      column :title
+      column :position
     end
   end
-
+  
+  # sidebar "Project Partials", class: "project_partials", as: :sortable, only: :show do
+  #   reorderable_table_for project.project_partials do
+  #     column :title
+  #     column :position
+  #   end
+  # end
+  
 end

app/admin/reorderable_table.js.coffee

+class Admin.ReorderableTable
+  constructor: (selector) ->
+    $(selector).find("ul").sortable
+      items:  "li"
+      handle: ".js-reorder-handle" # from `reorderable_column` above
+      update: @_sendPositions
+
+  _calculatePositions: (sortable) ->
+    # Sortable uses ids by default for serialisation
+    for itemId, index in $(sortable).sortable("toArray")
+      # ActiveAdmin sets the id to the form "underscored_classname_id"
+      id:    itemId.split("_").pop()
+      order: index + 1
+
+  _sendPositions: (event) =>
+    positions = items: @_calculatePositions(event.target)
+
+    # `url` assumes that we're on the index page, with no extra params
+    $.ajax
+      url:         $(this).data("url")
+      method:      "PATCH"
+      dataType:    "json"
+      contentType: "application/json"
+      data:        JSON.stringify(positions)
+
+
+# Initialise on page load
+$ ->
+  new Admin.ReorderableTable(".project_partials")
\ No newline at end of file

app/assets/javascripts/active_admin.js

 //= require active_admin/base
 //= require ckeditor/init
+//= require activeadmin_reorderable

app/assets/javascripts/active_admin.js.coffee

+#= require activeadmin_reorderable
\ No newline at end of file

app/assets/stylesheets/active_admin.scss

@@ -10,6 +10,7 @@
 // Active Admin's got SASS!
 @import "active_admin/mixins";
 @import "active_admin/base";
+@import "activeadmin_reorderable";
 
 // Overriding any non-variable SASS must be done after the fact.
 // For example, to change the default status-tag color:

app/models/ability.rb

@@ -16,6 +16,7 @@ class Ability
         # User related abilities
         can :manage, User
         can :manage, Project
+        can :manage, ProjectPartial
       end
   end
 end

app/models/project.rb

@@ -14,8 +14,7 @@ class Project < ApplicationRecord
 
   enum types: [:program, :project]
   enum status: [:in_progress, :implemented]
-  
-  has_many :project_partials, dependent: :destroy
+  has_many :project_partials, -> { order(position: :asc) }, dependent: :destroy
   has_many :project_galeries, inverse_of: :project, dependent: :destroy
   has_many :project_qoutes, inverse_of: :project, dependent: :destroy
   has_many :project_photos, inverse_of: :project, dependent: :destroy

app/models/project_partial.rb

 class ProjectPartial < ApplicationRecord
+  # acts_as_list top_of_list: 0
   belongs_to :project
+  acts_as_list scope: :project
 end

app/views/projects/show.html.haml

@@ -16,17 +16,17 @@
 
     .project_content
       .container
-        %div#project_partials
+        %div.project_partials
           - @project.project_partials.each do |project_partial|
             = render "#{project_partial.title}"
 
 :javascript
   
-document.addEventListener("turbolinks:load", function(){
+document.addEventListener("turbolinks:load", function(){(
 
   $(function() {
     console.log("dfsfds");
-    $("#project_partials").sortable({
+    $(".project_partials").sortable({
       update: function(e ,ui){
         $.ajax({
           url: $(this).data("url"),
@@ -41,5 +41,5 @@ document.addEventListener("turbolinks:load", function(){
         });
       }
     });
-  });
-)};
+  })
+)})

config/application.rb

@@ -6,6 +6,7 @@ require 'carrierwave'
 require 'carrierwave/processing/mini_magick'
 
 require 'awesome_print'
+require 'acts_as_list'
 # Require the gems listed in Gemfile, including any gems
 # you've limited to :test, :development, or :production.
 Bundler.require(*Rails.groups)

config/routes.rb

@@ -3,7 +3,7 @@ Rails.application.routes.draw do
     mount Ckeditor::Engine => '/ckeditor'
 	  root 'home#index'
 	  ActiveAdmin.routes(self)
-    patch '/projects/warm', to: 'admin/projects#sort'
+    # patch '/projects/warm', to: 'admin/projects#sort'
     resources :users
     resources :projects, only: [:show]
   end