Nachdem ein beliebiger Kategorienschnipsel auf „Kein Label

zogstrip · 11. Mai 2026 um 18:51

Danke für den Bericht @哈基米曼波 Das sollte das Problem beheben

github.com/discourse/discourse

FIX: 404 when switching categories with the "No tags" filter active (#39894)

main ← fix-category-switch-with-no-tags-filter

opened 06:50PM - 11 May 26 UTC

ZogStriP

+33 -42

When a user opened a category, selected "No tags" in the tag dropdown, and then …picked another category from the breadcrumb, they landed on a 404 page instead of the new category with the "No tags" filter preserved. The breadcrumb's `CategoryDrop` passes its `tag` argument straight to `getCategoryAndTagUrl`. On a `/tags/c/<slug>/<id>/none` page that `tag` is a `Tag` model with `slug: "none"` and `id: null` — not the literal string `"none"` that `TagDrop` passes from its own handler. The URL builder unconditionally appended `tag.slug + "/" + tag.id`, producing `/tags/c/<new-slug>/<new-id>/none/null`, which no route can resolve. This normalizes the tag handling in `getCategoryAndTagUrl` so that any tag without an `id` (the "no tags" filter, whether expressed as a string or as a Tag model) renders as `.../<slug>` instead of `.../<slug>/null`. The category branch is also tidied up — it had an unreachable inner `else` because the outer condition already required `subcategories` to be true. https://meta.discourse.org/t/402545

Thema		Antworten	Aufrufe
/tags/none route doesn't exist Bug	4	858	5. November 2020
Inconsistency tags/tags ->category UX	0	515	4. Dezember 2020
Clicking on a category from a tags page leads to undefined page Bug	2	972	6. November 2015
Routing problems with Discourse tagging plugin Bug	7	2515	9. Mai 2017
"No Tags" option on navigation bar not working Bug	2	664	10. Oktober 2018

Nachdem ein beliebiger Kategorienschnipsel auf „Kein Label

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