this post was submitted on 30 Mar 2025

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PSA: Lemmy mods, double check that your pinned posts are pinned on other instances (lemmy.dbzer0.com)

submitted 4 days ago by Blaze@lemmy.dbzer0.com to c/fediverse@piefed.social

13 comments fedilink hide all child comments

Example

Seems to happens when posts are pinned by non local mods.

Example where it works:

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[–] freamon@preferred.social 4 points 4 days ago (2 children)

Lemmy (still) doesn't support pinning by non-local mods: I just tried for feddit.nl (which is on 0.19.10), and it rejects the activity (the specific error is 400: {"error":"couldnt_find_community"} but that's not really relevant 'cos the community is plenty findable from the activity)

[–] flamingos@feddit.uk 1 points 3 days ago (2 children)

Was this with a Piefed account? Because I was able to pin a post in !herfriend@sappho.social with my feddit.uk account just fine.

[–] freamon@preferred.social 3 points 2 days ago (1 children)

It was yeah. It's what I happened to have on me at the time, but the activity sent will just have been a copy of what Lemmy sends, so I thought it would apply the same. The activity was:

{
"id": "https://pythag.net/activities/add/zPnR48IYPc7MUUX", 
"type": "Add", 
"actor": "https://pythag.net/u/andrew",
"object": "https://feddit.nl/post/31230016",
"target": "https://feddit.nl/c/trendingcommunities/featured", 
"@context": ["https://www.w3.org/ns/activitystreams", "https://w3id.org/security/v1"],
"audience": "https://feddit.nl/c/trendingcommunities", 
"to": ["https://www.w3.org/ns/activitystreams#Public"], 
"cc": ["https://feddit.nl/c/trendingcommunities"]
}

[–] flamingos@feddit.uk 1 points 2 days ago (1 children)

Hmm, yeah that does look identical to what Lemmy outputs:

{
  "@context": [
    "https://join-lemmy.org/context.json",
    "https://www.w3.org/ns/activitystreams"
  ],
  "actor": "https://feddit.uk/u/flamingos",
  "to": [
    "https://www.w3.org/ns/activitystreams#Public"
  ],
  "object": "https://feddit.uk/post/15520058",
  "target": "https://sappho.social/c/herfriend/featured",
  "cc": [
    "https://sappho.social/c/herfriend"
  ],
  "type": "Add",
  "id": "https://feddit.uk/activities/add/844d6269-467e-45cc-81ef-e1677c547d5d",
  "audience": "https://sappho.social/c/herfriend"
}

Is it that the communities locked? I can't imagine that's why, but I'll test it.

[–] Blaze@lemmy.dbzer0.com 1 points 2 days ago (1 children)

If you want an example, !buyeuropean@feddit.uk doesn't show up the pinned posts pinned yesterday: https://feddit.nl/c/buyeuropean@feddit.uk

[–] flamingos@feddit.uk 1 points 2 days ago* (last edited 2 days ago) (1 children)

That's something different as it was a local mod that featured those posts. I'm trying to pinpoint the couldnt_find_community error, as I'm genuinely at a loss for what might be causing it, but it's not that the communities is locked.

[–] Blaze@lemmy.dbzer0.com 1 points 2 days ago

Ah, good point!

[–] Blaze@lemmy.dbzer0.com 1 points 3 days ago (1 children)

I see you just reposted it, let's wait 24h, I've noticed the posts would get unpinned after that long for some reason

[–] flamingos@feddit.uk 2 points 3 days ago

It might be because Lemmy doesn't write featured posts from remote mods into the mod_feature_post table. IDK, we'll see if this post stays featured and if not, I'll try to track down what's causing it. I've definitely noticed weirdness with it before (here).

[–] Blaze@lemmy.dbzer0.com 1 points 4 days ago

Thank you for the details.

At some point it also didn't kept posts made by non local users, but this has been solved since