since when did `post.comments.delete_all` generate the SQL `UPDATE comments SET post_id = null` in rails? is there some setting that makes it do that instead of just going `DELETE FROM comments WHERE post_id = ?`
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since when did `post.comments.delete_all` generate the SQL `UPDATE comments SET post_id = null` in rails? is there some setting that makes it do that instead of just going `DELETE FROM comments WHERE post_id = ?`
