098_set_topic_authors_as_watchers.rb 1.15 KB
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#-- encoding: UTF-8
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#-- copyright
# ChiliProject is a project management system.
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#
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# Copyright (C) 2010-2012 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
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#
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# See doc/COPYRIGHT.rdoc for more details.
#++

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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
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    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")
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  end

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