[57812] Changed CustomOptions to become a hierarchy

app/models/custom_field.rb

@@ -35,10 +35,18 @@ class CustomField < ApplicationRecord
   # to work as desired.
   # Without it, the after_commit callbacks of acts_as_list will prevent the touch to happen.
   # https://github.com/rails/rails/issues/26726
+
+  has_one :custom_option,
+          -> { where(parent_id: nil) },
+          dependent: :delete,
+          inverse_of: "custom_field"
   has_many :custom_options,
-           -> { order(position: :asc) },
+           ->(current_custom_field) do
+             where(parent_id: current_custom_field.custom_option.id).order(position: :asc)
+           end,
            dependent: :delete_all,
            inverse_of: "custom_field"
+
   accepts_nested_attributes_for :custom_options
 
   acts_as_list scope: [:type]

app/models/custom_option.rb

@@ -36,6 +36,8 @@ class CustomOption < ApplicationRecord
 
   before_destroy :assure_at_least_one_option
 
+  has_closure_tree order: "position", numeric_order: true
+
   def to_s
     value
   end

db/migrate/20240917092432_add_parent_id_to_custom_option.rb

@@ -0,0 +1,5 @@
+class AddParentIdToCustomOption < ActiveRecord::Migration[7.1]
+  def change
+    add_column :custom_options, :parent_id, :integer
+  end
+end

db/migrate/20240917092519_create_custom_option_hierarchies.rb

@@ -0,0 +1,16 @@
+class CreateCustomOptionHierarchies < ActiveRecord::Migration[7.1]
+  def change
+    create_table :custom_option_hierarchies, id: false do |t|
+      t.integer :ancestor_id, null: false
+      t.integer :descendant_id, null: false
+      t.integer :generations, null: false
+    end
+
+    add_index :custom_option_hierarchies, %i[ancestor_id descendant_id generations],
+              unique: true,
+              name: "custom_option_anc_desc_idx"
+
+    add_index :custom_option_hierarchies, %i[descendant_id],
+              name: "custom_option_desc_idx"
+  end
+end

db/migrate/20240918090313_add_short_to_custom_options.rb

@@ -0,0 +1,5 @@
+class AddShortToCustomOptions < ActiveRecord::Migration[7.1]
+  def change
+    add_column :custom_options, :short, :text
+  end
+end