2017-08-30 23:06:56 -05:00
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class RemoveUsersFromTopicAllowedUsers < ActiveRecord::Migration[4.2]
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2016-01-11 21:15:39 -06:00
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# historically we added admins automatically to a message if they
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# responded, despite them being in the group the message is targetted at
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# this causes inbox bloat for pretty much no reason
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def up
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sql = <<SQL
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DELETE FROM topic_allowed_users tu
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USING topic_allowed_groups tg
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JOIN group_users gu ON gu.group_id = tg.group_id
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WHERE tu.user_id = gu.user_id AND tg.topic_id = tu.topic_id
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SQL
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execute sql
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end
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def down
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# can not be reversed but can be replayed if needed
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end
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end
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