Category has been deleted, but still can't permanently delete the "About" topic

zogstrip · September 25, 2026, 5:44pm

thanks for the report @alltiagocom

will be fixed by

github.com/discourse/discourse

FIX: Allow permanently deleting the About topic of a deleted category (#44132)

main ← zogstrip/permanently-delete-orphaned-about-topic

merged 10:44AM - 05 Oct 26 UTC

ZogStriP

+105 -3

Previously, deleting a category trashed its About topic but left the first post …live, so `posts_count` stayed at 1 and permanent deletion failed with "This topic still has 0 posts…". Recovering a post in that trashed topic also raised a 500, because post voting's `is_post_voting_topic?` dereferenced the nil topic. This change trashes the first post along with the topic, repairs existing topics with a post-deploy migration, and makes `is_post_voting_topic?` nil-safe. https://meta.discourse.org/t/411015

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Best way to discriminate a "About the category" post? Product Support	3	654	June 24, 2019
Can't delete topic without category Product Support	13	389	May 28, 2025
Can't delete the "about this category" topics Product Support	10	2517	September 20, 2015
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Category has been deleted, but still can't permanently delete the "About" topic

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