From 08b8439e21d6bff762e6998f93eee2e39a1635f4 Mon Sep 17 00:00:00 2001
From: Kris <kris.aubuchon@discourse.org>
Date: Mon, 10 Feb 2025 16:48:11 -0500
Subject: [PATCH] DEV: add transformer for default category view setting
 (#31264)

This allows us to set custom values here, like "Voting" from the topic
voting plugin:
https://github.com/discourse/discourse-topic-voting/pull/232
---
 .../app/components/edit-category-settings.js   | 18 +++++++++++++++---
 .../discourse/app/lib/transformer/registry.js  |  1 +
 2 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/app/assets/javascripts/discourse/app/components/edit-category-settings.js b/app/assets/javascripts/discourse/app/components/edit-category-settings.js
index d43f7c72491..93a541de08b 100644
--- a/app/assets/javascripts/discourse/app/components/edit-category-settings.js
+++ b/app/assets/javascripts/discourse/app/components/edit-category-settings.js
@@ -4,6 +4,7 @@ import { buildCategoryPanel } from "discourse/components/edit-category-panel";
 import { setting } from "discourse/lib/computed";
 import { SEARCH_PRIORITIES } from "discourse/lib/constants";
 import discourseComputed from "discourse/lib/decorators";
+import { applyMutableValueTransformer } from "discourse/lib/transformer";
 import { i18n } from "discourse-i18n";
 
 const categorySortCriteria = [];
@@ -49,12 +50,23 @@ export default class EditCategorySettings extends buildCategoryPanel(
     ];
   }
 
-  @discourseComputed
-  availableViews() {
-    return [
+  @discourseComputed("category.id", "category.custom_fields")
+  availableViews(categoryId, customFields) {
+    const views = [
       { name: i18n("filters.latest.title"), value: "latest" },
       { name: i18n("filters.top.title"), value: "top" },
     ];
+
+    const context = {
+      categoryId,
+      customFields,
+    };
+
+    return applyMutableValueTransformer(
+      "category-available-views",
+      views,
+      context
+    );
   }
 
   @discourseComputed
diff --git a/app/assets/javascripts/discourse/app/lib/transformer/registry.js b/app/assets/javascripts/discourse/app/lib/transformer/registry.js
index 1dd1e17a9ee..5195d8cf733 100644
--- a/app/assets/javascripts/discourse/app/lib/transformer/registry.js
+++ b/app/assets/javascripts/discourse/app/lib/transformer/registry.js
@@ -7,6 +7,7 @@ export const BEHAVIOR_TRANSFORMERS = Object.freeze([
 
 export const VALUE_TRANSFORMERS = Object.freeze([
   // use only lowercase names
+  "category-available-views",
   "category-description-text",
   "category-display-name",
   "composer-service-cannot-submit-post",