Excluded future-dated posts from feeds - #2162
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ref https://linear.app/ghost/issue/ONC-1977 Publishers control the published date of their posts: the Ghost Admin API and content imports accept arbitrary dates, and remote fediverse servers can claim any date they like. Both the main feed and the discovery feeds sort by published_at descending, so a post dated in the future pins itself to the top of every page — and sits above every pagination cursor — until real time catches up with its claimed date. Feed queries now exclude posts whose published date hasn't passed yet. Filtering at read time was chosen over rewriting the timestamp at insertion because it doesn't reward future-dating with top-of-feed placement at ingestion, it retroactively hides the future-dated rows already in the tables with no data cleanup, and a legitimately mis-dated post (e.g. clock skew on a self-hosted site) simply appears in its correct chronological slot once its date passes — the same behaviour as a scheduled post. The filter is a range condition on the column the queries already sort and paginate by, so it rides the existing indexes at no extra cost.
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Included review availability: Your plan provides up to 2 included reviews per hour; 1 remains after this review. WalkthroughFeed insertion now rejects future-dated posts, reposts, and articles for user and discovery feeds. Feed queries no longer apply the shared publication-date filter. Migration 000084 removes existing future-dated feed entries. Integration tests verify the write-side behavior. Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: ⚪ Minimal · up to Future-dated posts are excluded from user and discovery feed writes, with existing future-dated entries removed by migration. No current merge-blocking risk remains. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
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| // can claim a date in the future — such posts are hidden until | ||
| // their claimed date passes, otherwise they would stick to the | ||
| // top of the feed | ||
| .where('feeds.published_at', '<=', new Date()) |
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When a future-dated post is reposted, addPostToFeeds stores the repost's created_at in feeds.published_at rather than the post's publication date. This predicate therefore accepts the repost immediately even though the joined posts.published_at is still in the future, so the main feed continues to expose future-dated or scheduled content through reposts. Keep this condition for ordering/index use, but also constrain the post's actual publication timestamp.
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Inline comments:
In `@src/feed/feed.service.integration.test.ts`:
- Around line 325-326: Remove the AccountType casts when passing followedAccount
and userAccount in the integration test, and update recordAccountFollow to
accept Account if its current contract rejects the entities. Preserve the
existing follow-recording behavior while using Account throughout.
In `@src/feed/feed.service.ts`:
- Line 245: Move both publication-date predicates out of FeedService and into
the corresponding user-feed and discovery-feed view queries, keeping FeedService
write-side only. Update src/feed/feed.service.ts lines 245-245 and 388-388
accordingly; the views should return presentation-ready DTOs without adding
business logic.
- Line 245: Update the feed query near the feeds.published_at predicate to also
require posts.published_at to be no later than the current time, preventing
future-dated reposts from appearing early. Add a regression test covering a
future-published post that is reposted before its publication time.
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ref https://linear.app/ghost/issue/ONC-1977 For repost entries, feeds.published_at holds the repost's own creation date rather than the post's claimed published date, so a future-dated post could still surface in feeds immediately by being reposted. The feed query now also checks the post's own published date, closing the gap for reposts.
ref https://linear.app/ghost/issue/ONC-1977 recordAccountFollow accepts any { id } object, so the casts copied from older tests in this file were never required. The remaining casts elsewhere in the file predate this change and are left for a separate cleanup.
ref https://linear.app/ghost/issue/ONC-1977 Both feed queries carried the same predicate with the same explanatory comment. The exclusion now lives in one named helper, documented once. Filtering on posts.published_at rather than the per-feed-table copies also lets both call sites share the exact same predicate: the copies are equal to it for regular entries, always in the past for reposts, and stale if a post's date is edited after insertion — so the post's own date is both sufficient and the more trustworthy source.
ref https://linear.app/ghost/issue/ONC-1977 The feed read queries are tuned so every predicate is served by an index, and the read-time filter broke that guarantee: checking posts.published_at (required for correctness, since repost entries store the repost date in feeds.published_at) meant discarding rows after the join, making worst-case query cost depend on how many future-dated rows a publisher creates. Future-dated posts are now simply never added to feeds or discovery feeds, so the read queries stay untouched and fully index-served. The trade-off is that a future-dated post no longer appears once its claimed date passes — it is excluded outright rather than deferred — which is the intended treatment for a value only abuse produces.
ref https://linear.app/ghost/issue/ONC-1977 Excluding future-dated posts at write time only affects new posts, so the rows that already made it into feeds and discovery feeds are removed by migration. Matching on posts.published_at rather than the feed tables' own copy also catches repost entries, whose feed timestamp is the repost date rather than the post's claimed date.
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ref https://linear.app/ghost/issue/ONC-1977
Publishers control the published date of their posts: the Ghost Admin API and content imports accept arbitrary dates, and remote fediverse servers can claim any date they like. Both the main feed and the discovery feeds sort by
published_atdescending, so a post dated in the future pins itself to the top of every page — and sits above every pagination cursor — until real time catches up with its claimed date.Posts claiming a future published date are now never added to feeds or discovery feeds, and a migration removes the future-dated rows that already made it in.
Filtering at write time was chosen over a read-time predicate because the feed read queries are tuned so every
where()is served by an index, and correctness would require checkingposts.published_at— repost entries store the repost date infeeds.published_at, so the feed tables' own timestamp cannot catch a reposted future-dated post. A read-time check on the joinedpostsrow would discard rows after the join, making worst-case query cost depend on how many future-dated rows a publisher creates. With the write-time guard the read queries are untouched.The trade-off is that a future-dated post is excluded outright rather than deferred until its claimed date passes. That's the intended treatment: a published post dated in the future is a value only abuse or misconfiguration produces, and either way it shouldn't surface later as if legitimate.
The cleanup migration matches on
posts.published_atrather than the feed tables' copy so that repost entries of future-dated posts are removed too.