New Topic button text does not change to New Event in sidebar in events category in Horizon Theme

chapoi · June 10, 2026, 9:27am

Ah thanks for the report, an oversight indeed.

Should be fixed with:

github.com/discourse/discourse

FIX: Horizon > Apply `create-topic-label` transformer to Horizon sidebar button (#40730)

main ← horizon-sidebar-btn-extension

opened 09:27AM - 10 Jun 26 UTC

chapoi

+34 -5

Previously, the new topic button in the Horizon theme's sidebar hardcoded its la…bel and icon, so plugins like discourse-calendar could not relabel it (e.g. to "New Event" in an events category) even though the button outside the sidebar updated correctly. This change runs the label and icon through the `create-topic-label` and `create-topic-icon` value transformers, matching core's `d-navigation` behaviour so plugin overrides apply in the sidebar too. Since this button can now have two states, the icon is brought back to improve quick-glance clarity. <img width="1519" height="807" alt="CleanShot 2026-06-10 at 12 11 12" src="https://github.com/user-attachments/assets/1c1e79fb-d509-40a7-b385-9e3efebf3d09" />

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New Topic button text does not change to New Event in sidebar in events category in Horizon Theme

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