trabajo-afectivo/app/models/object_manager/attribute/validation/backend.rb

# Copyright (C) 2012-2021 Zammad Foundation, http://zammad-foundation.org/

class ObjectManager::Attribute::Validation::Backend
  def self.validate(...)
    new(...).validate
  end

  attr_reader :record, :attribute, :value, :previous_value

  def initialize(record:, attribute:)
    @record         = record
    @attribute      = attribute
    @value          = record[attribute.name]
    @previous_value = record.attribute_in_database(attribute.name)
  end

  def invalid_because_attribute(message)
    record.errors.add attribute.name.to_sym, message
  end
end