view .svn/pristine/8c/8c1df4d73d6e3117c24c3c76b9007e79ab4c6eb2.svn-base @ 1013:b98f60a6d231 live

Avoid crashing out with weird event types that don't give us a proper author record

class SetTopicAuthorsAsWatchers < ActiveRecord::Migration
  def self.up
    # Sets active users who created/replied a topic as watchers of the topic
    # so that the new watch functionality at topic level doesn't affect notifications behaviour
    Message.connection.execute("INSERT INTO #{Watcher.table_name} (watchable_type, watchable_id, user_id)" +
                                 " SELECT DISTINCT 'Message', COALESCE(m.parent_id, m.id), m.author_id" +
                                 " FROM #{Message.table_name} m, #{User.table_name} u" +
                                 " WHERE m.author_id = u.id AND u.status = 1")
  end

  def self.down
    # Removes all message watchers
    Watcher.delete_all("watchable_type = 'Message'")
  end
end