Partial refresh of Measurements#new form

app/models/quantity.rb

@@ -3,8 +3,8 @@ class Quantity < ApplicationRecord
 
   belongs_to :user, optional: true
   belongs_to :parent, optional: true, class_name: "Quantity"
-  has_many :subquantities, class_name: "Quantity", inverse_of: :parent,
-    dependent: :restrict_with_error
+  has_many :subquantities, ->{ order(:name) }, class_name: "Quantity",
+    inverse_of: :parent, dependent: :restrict_with_error
 
   validate if: ->{ parent.present? } do
     errors.add(:parent, :user_mismatch) unless user_id == parent.user_id
@@ -168,8 +168,10 @@ class Quantity < ApplicationRecord
     user.quantities.with_ancestors(progeny.id).exists?(id)
   end
 
-  def fullname
+  def self.full_names!(of)
     self['fullname'] ||
       user.quantities.with_ancestors(id).order(:depth).map(&:name).join(' → ')
   end
+  scope :with_full_name, ->{
+  }
 end