升级到最新 Discourse 时出错——已解决

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已修复。

这需要一些数据库操作。我使用了 postgres Docker 镜像来挂载数据库：

docker run --name postgres_container_2 -e POSTGRES_PASSWORD=mysecretpassword -d -p 5432:5432 -v /var/discourse/shared/standalone/postgres_data:/var/lib/postgresql/data postgres:15

然后定位了有问题的表行：

SELECT
          tc.topic_id,
          tc.answer_post_id,
          tc.topic_timer_id,
          tc.accepter_user_id,
          tc.created_at,
          tc.updated_at
        FROM (
          SELECT
            tc.topic_id,
            CAST(tc.value AS INTEGER) AS answer_post_id,
            CAST(tc2.value AS INTEGER) AS topic_timer_id,
            COALESCE(ua.acting_user_id, -1) AS accepter_user_id,
            tc.created_at,
            tc.updated_at,
            ROW_NUMBER() OVER (PARTITION BY tc.topic_id ORDER BY tc.created_at ASC) AS rn_topic,
            ROW_NUMBER() OVER (PARTITION BY CAST(tc.value AS INTEGER) ORDER BY tc.created_at ASC) AS rn_answer
          FROM topic_custom_fields tc
          LEFT JOIN topic_custom_fields tc2 ON tc2.topic_id = tc.topic_id AND tc2.name = 'solved_auto_close_topic_timer_id'
          LEFT JOIN user_actions ua ON ua.target_topic_id = tc.topic_id AND ua.action_type = 15
          WHERE tc.name = 'accepted_answer_post_id'
            AND tc.id > 0
            AND tc.id <= 0 + 10000
            AND tc.value IS NULL
        ) tc

一旦我确保这只选择了错误的那一行，我就将 select 改为 delete，祈祷一番，然后执行 ./launcher rebuild app。

在等待镜像构建了很长时间之后，我现在拥有了一个快乐的社区和一个重建的网站，包括安全修复。

我不知道上面提到的行为什么会变得无效，但一旦它被删除，一切就都正常了。

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