class SpamObserver < ActiveRecord::Observer observe User, DiaryEntry, DiaryComment def after_save(record) case when record.is_a?(User): user = record when record.is_a?(DiaryEntry): user = record.user when record.is_a?(DiaryComment): user = record.user end if user.status == "active" and user.spam_score > SPAM_THRESHOLD user.update_attributes(:status => "suspended") end end end