Hey guys Is there any way to “hide” subcategories from topic lists and display the parent categories below the topic title instead? My desired result is a root category with n subcategories. Those subcategories are not supposed to be displayed in the front end. They are only used to restrict access to the posts based on group membership. In the topic list I would like to display the parent category below the topic title instead of the subcategory. I thought about using tags, but unfortunately I can’t restrict access to the topics that way.

In general, you should avoid full template overrides since they require maintenance - you have to run a diff and check what’s changed if a Discourse update breaks your theme. What you can do, is take a step back and modify the data that gets passed to the template instead. The topic-list-item is an ember component, so you can use api.modifyClass to make the changes you want For example, here’s a snippet that will show the parent category badge in subcategory topics under the title. If the topic is in the main category, the code has no effect. const { on } = require("discourse-common/utils/decorators"); // parent category ids const targetCategoryIds = [9, 15, 50]; const useParentCategory = function () { const parentCategory = this.attrs.topic.category.parentCategory; const switchToParent = parentCategory && targetCategoryIds.includes(parentCategory.id) if (switchToParent) { this.attrs.topic.set("category", parentCategory); } }; api.modifyClass("component:topic-list-item", { @on("didReceiveAttrs") setCategory() { useParentCategory.call(this); } }); api.modifyClass("component:latest-topic-list-item", { @on("didReceiveAttrs") setCategory() { useParentCategory.call(this); } });

The template for items in the topic list only shows the link to the topic’s category, like this: {{category-link topic.category}} So you would need to modify this template to show links to the parent category: {{#if topic.category.parentCategory}} {{category-link topic.category.parentCategory}} {{else}} {{category-link topic.category}} {{/if}} But if you only want this to happen for a specific parent category, you’d need to add more logic. I don’t know what would be the recommended way to do that, registering a handlebars helper? Another approach could be to always show both category and parent links and then hide the ones you don’t want with CSS.

I haven’t looked, but I think you should be able to hide them with CSS.

[image] manuel: Another approach could be to always show both category and parent links and then hide the ones you don’t want with CSS. Do I need to modify the template for this approach as well? I could not find such a site setting in my admin.

The parent categories are not on the default template, so yes, I guess you have to modify the template. At least I’m not aware of a lighter approach to achieve that. There’s no site setting to modify templates, I’ll send you the code to try it out by DM.

This is awesome! Is there any way to limit it to one or more specific categories?

Two different ways to address this based on what you’re trying to accomplish. What’s the desired result? all subcategories under parent category “foo” should have this behavior. some subcategories under different parent categories should have this behavior.

@Johani [image] Johani: all subcategories under parent category “foo” should have this behavior. This one is what we are looking for

I edited the snippet above to reflect that change. All you need to do is to add the parent category ids to the targetCategoryIds array. You can find the category id by visiting the category page and checking the URL . https://meta.discourse.org/c/support/6 “6” at the end of the URL above is the id for the support category here on Meta.

[image] Johani: What you can do, is take a step back and modify the data that gets passed to the template instead. Thanks for sharing this @Johani ! Just getting started with ember.. you guys are really helpful! :pray: :relaxed:

That’s amazing! Thx a lot for the quick help.

Hide subcategories without hiding their topics in topic list?

Product Support

jrgong (jrgong) July 7, 2021, 8:21am 20

Thx @Johani for your help, reallu appreciate it!

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Hide subcategories without hiding their topics in topic list?

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