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class MigrateUsersNotificationLevel < ActiveRecord::Migration
DOWNTIME = false
# Migrates only users who changed their default notification level :participating
# creating a new record on notification settings table
DOWNTIME = false
def up
execute(%Q{
INSERT INTO notification_settings
(user_id, level, created_at, updated_at)
(SELECT id, notification_level, created_at, updated_at FROM users WHERE notification_level != 1)
})
end
# Migrates from notification settings back to user notification_level
# If no value is found the default level of 1 will be used
def down
execute(%Q{
UPDATE users u SET
notification_level = COALESCE((SELECT level FROM notification_settings WHERE user_id = u.id AND source_type IS NULL), 1)
})
end
end
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