class PSpecValue < ApplicationRecord has_many :p_product_ref_specs UNITS = self.distinct.pluck(:unit) def member_label "#{value} #{unit}" end acts_as_sorting :fields => { :id => {:name => "ID"}, :value => {:name => "Valeur", :reorder => true}, :unit => {:name => "Unité", :reorder => true}, :actions => {:name => "Actions", :reorder => true} } end