feat(help-center): enable drag-and-drop category reordering (#13706)

app/models/article.rb

@@ -132,11 +132,13 @@ class Article < ApplicationRecord
     # rubocop:enable Rails/SkipsModelValidations
   end
 
-  def self.update_positions(positions_hash)
-    positions_hash.each do |article_id, new_position|
-      # Find the article by its ID and update its position
-      article = Article.find(article_id)
-      article.update!(position: new_position)
+  def self.update_positions(portal:, positions_hash:)
+    return if positions_hash.blank?
+
+    transaction do
+      positions_hash.each do |article_id, new_position|
+        portal.articles.find(article_id).update!(position: new_position)
+      end
     end
   end
 

app/models/category.rb

@@ -73,6 +73,16 @@ class Category < ApplicationRecord
     params[:page] || 1
   end
 
+  def self.update_positions(portal:, positions_hash:)
+    return if positions_hash.blank?
+
+    transaction do
+      positions_hash.each do |category_id, new_position|
+        portal.categories.find(category_id).update!(position: new_position)
+      end
+    end
+  end
+
   private
 
   def ensure_account_id

app/models/portal.rb

@@ -27,6 +27,8 @@
 class Portal < ApplicationRecord
   include Rails.application.routes.url_helpers
 
+  DEFAULT_COLOR = '#1f93ff'.freeze
+
   belongs_to :account
   has_many :categories, dependent: :destroy_async
   has_many :folders,  through: :categories
@@ -62,6 +64,10 @@ class Portal < ApplicationRecord
     config['default_locale'] || 'en'
   end
 
+  def color
+    self[:color].presence || DEFAULT_COLOR
+  end
+
   private
 
   def config_json_format