this post was submitted on 14 Jul 2023
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How are comments federated? (lemmy.world)
submitted 1 year ago by quest@lemmy.world to c/fediverse@lemmy.world
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I'm trying to figure out how to get the comments of a post given a link to it using ActivityPub.

Based on reading the ActivityPub spec, I thought comments were federated via the replies key of the ActivityPub Object.

This works for Mastodon posts, but not for Lemmy (nor Pleroma). As an example

curl -H "Accept: application/activity+json" https://lemmy.my.id/post/79514 | jq

doesn't contain a replies key. Yet the comments are federated to Mastodon somehow.

What is going on? How can I get the comment?

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[โ€“] quest@lemmy.world 1 points 1 year ago (1 children)

I understand exactly what you're saying; you can get the parents but not the replies in that situation.

I'm just saying that in your situation (e.g. someone I follow on Mastodon likes a Lemmy post) it would be convenient for me as a user to be able to view the replies to that Lemmy post, but I cannot necessarily do that because Lemmy does not include replies.

[โ€“] r00ty@kbin.life 1 points 1 year ago

I expect it does, from the lemmy API. But from the ActivityPub api, it doesn't make sense to.