forgeplus/app/models/searchable/dependents/user.rb

module Searchable::Dependents::User
  extend ActiveSupport::Concern

  included do
    after_update_commit :check_searchable_dependents
  end

  private

  def check_searchable_dependents
    if firstname_previously_changed? || lastname_previously_changed? || user_extension&.school_id_previously_changed?
      # reindex shixun
      created_shixuns.each(&:reindex)

      # reindex course
      manage_courses.each(&:reindex)

      # reindex subject
      created_subjects.each(&:reindex)
      subjects.each(&:reindex)
    end
  end
end