class RepositoryDateValue < ApplicationRecord belongs_to :created_by, foreign_key: :created_by_id, class_name: 'User', optional: true belongs_to :last_modified_by, foreign_key: :last_modified_by_id, class_name: 'User', optional: true has_one :repository_cell, as: :value, dependent: :destroy accepts_nested_attributes_for :repository_cell validates :repository_cell, presence: true validates :data, presence: true def formatted data end end