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FEATURE: Introduce an optimized style for category page (#29239)

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The new style is called `categories_only_optimized` and it is designed
to show only the parent categories, without any subcategories. This
works best for communities with many categories (over a thousand).
This commit is contained in:
Bianca Nenciu 2024-10-24 13:46:42 +03:00 committed by GitHub
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12 changed files with 289 additions and 3 deletions
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83
app/assets/javascripts/discourse/app/components/categories-only-optimized.hbs Normal file
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@ -0,0 +1,83 @@
<PluginOutlet
@name="categories-only-wrapper"
@outletArgs={{hash categories=this.categories}}
>
{{#if this.categories}}
{{#if this.filteredCategories}}
<table
class="category-list optimized {{if this.showTopics 'with-topics'}}"
>
<thead>
<tr>
<th class="category"><span
role="heading"
aria-level="2"
id="categories-only-category"
>{{i18n "categories.category"}}</span></th>
<th class="topics">{{i18n "categories.topics"}}</th>
{{#if this.showTopics}}
<th class="latest">{{i18n "categories.latest"}}</th>
{{/if}}
</tr>
</thead>
<tbody aria-labelledby="categories-only-category">
{{#each this.categories as |category|}}
<ParentCategoryRowOptimized
@category={{category}}
@showTopics={{this.showTopics}}
/>
{{/each}}
</tbody>
</table>
{{/if}}
{{#if this.mutedCategories}}
<div class="muted-categories">
<a
href
class="muted-categories-link"
{{on "click" this.toggleShowMuted}}
>
<h3 class="muted-categories-heading">{{i18n "categories.muted"}}</h3>
{{#if this.mutedToggleIcon}}
{{d-icon this.mutedToggleIcon}}
{{/if}}
</a>
<table
class="category-list optimized
{{if this.showTopics 'with-topics'}}
{{unless this.showMutedCategories 'hidden'}}"
>
<thead>
<tr>
<th class="category"><span
role="heading"
aria-level="2"
id="categories-only-category-muted"
>{{i18n "categories.category"}}</span></th>
<th class="topics">{{i18n "categories.topics"}}</th>
{{#if this.showTopics}}
<th class="latest">{{i18n "categories.latest"}}</th>
{{/if}}
</tr>
</thead>
<tbody aria-labelledby="categories-only-category-muted">
{{#each this.categories as |category|}}
<ParentCategoryRowOptimized
@category={{category}}
@showTopics={{this.showTopics}}
@listType="muted"
/>
{{/each}}
</tbody>
</table>
</div>
{{/if}}
{{/if}}
</PluginOutlet>
<PluginOutlet
@name="below-categories-only"
@connectorTagName="div"
@outletArgs={{hash categories=this.categories showTopics=this.showTopics}}
/>

56
app/assets/javascripts/discourse/app/components/categories-only-optimized.js Normal file
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@ -0,0 +1,56 @@
import Component from "@ember/component";
import { action } from "@ember/object";
import { tagName } from "@ember-decorators/component";
import discourseComputed from "discourse-common/utils/decorators";
@tagName("")
export default class CategoriesOnlyOptimized extends Component {
showMuted = false;
@discourseComputed("showMutedCategories", "filteredCategories.length")
mutedToggleIcon(showMutedCategories, filteredCategoriesLength) {
if (filteredCategoriesLength === 0) {
return;
}
if (showMutedCategories) {
return "minus";
}
return "plus";
}
@discourseComputed("showMuted", "filteredCategories.length")
showMutedCategories(showMuted, filteredCategoriesLength) {
return showMuted || filteredCategoriesLength === 0;
}
@discourseComputed("categories", "categories.length")
filteredCategories(categories, categoriesLength) {
if (!categories || categoriesLength === 0) {
return [];
}
return categories.filter((cat) => !cat.isHidden);
}
@discourseComputed("categories", "categories.length")
mutedCategories(categories, categoriesLength) {
if (!categories || categoriesLength === 0) {
return [];
}
// hide in single category pages
if (categories.firstObject.parent_category_id) {
return [];
}
return categories.filterBy("hasMuted");
}
@action
toggleShowMuted(event) {
event?.preventDefault();
this.toggleProperty("showMuted");
}
}

10
app/assets/javascripts/discourse/app/components/discovery/categories-display.gjs
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@ -6,6 +6,7 @@ import CategoriesAndTopTopics from "discourse/components/categories-and-top-topi
import CategoriesBoxes from "discourse/components/categories-boxes";
import CategoriesBoxesWithTopics from "discourse/components/categories-boxes-with-topics";
import CategoriesOnly from "discourse/components/categories-only";
import CategoriesOnlyOptimized from "discourse/components/categories-only-optimized";
import CategoriesWithFeaturedTopics from "discourse/components/categories-with-featured-topics";
import ConditionalLoadingSpinner from "discourse/components/conditional-loading-spinner";
import LoadMore from "discourse/components/load-more";
@ -15,6 +16,7 @@ import SubcategoriesWithFeaturedTopics from "discourse/components/subcategories-
const mobileCompatibleViews = [
"categories_with_featured_topics",
"subcategories_with_featured_topics",
"categories_only_optimized",
];
const subcategoryComponents = {
@ -31,6 +33,7 @@ const globalComponents = {
categories_boxes_with_topics: CategoriesBoxesWithTopics,
categories_boxes: CategoriesBoxes,
categories_only: CategoriesOnly,
categories_only_optimized: CategoriesOnlyOptimized,
categories_with_featured_topics: CategoriesWithFeaturedTopics,
subcategories_with_featured_topics: SubcategoriesWithFeaturedTopics,
};
@ -81,7 +84,12 @@ export default class CategoriesDisplay extends Component {
}
get canLoadMore() {
return this.site.lazy_load_categories && this.args.loadMore;
return (
this.args.loadMore &&
(this.site.lazy_load_categories ||
this.siteSettings.desktop_category_page_style ===
"categories_only_optimized")
);
}
<template>

46
app/assets/javascripts/discourse/app/components/parent-category-row-optimized.hbs Normal file
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@ -0,0 +1,46 @@
{{#unless this.isHidden}}
<PluginOutlet
@name="category-list-above-each-category"
@outletArgs={{hash category=this.category}}
/>
<tr
data-category-id={{this.category.id}}
data-notification-level={{this.category.notificationLevelString}}
class="{{if
this.category.description_excerpt
'has-description'
'no-description'
}}
{{if this.category.uploaded_logo.url 'has-logo' 'no-logo'}}"
>
<td
class="category {{if this.isMuted 'muted'}}"
style={{category-color-variable this.category.color}}
>
<CategoryTitleLink @category={{this.category}} />
<PluginOutlet
@name="below-category-title-link"
@connectorTagName="div"
@outletArgs={{hash category=this.category}}
/>
{{#if this.category.description_excerpt}}
<div class="category-description">
{{dir-span this.category.description_excerpt htmlSafe="true"}}
</div>
{{/if}}
</td>
<td class="topics">
<div title={{this.category.statTitle}}>{{html-safe
this.category.stat
}}</div>
<CategoryUnread
@category={{this.category}}
@tagName="div"
@unreadTopicsCount={{this.unreadTopicsCount}}
@newTopicsCount={{this.newTopicsCount}}
class="unread-new"
/>
</td>
</tr>
{{/unless}}

3
app/assets/javascripts/discourse/app/components/parent-category-row-optimized.js Normal file
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@ -0,0 +1,3 @@
import CategoryListItem from "discourse/components/category-list-item";
export default class ParentCategoryRowOptimized extends CategoryListItem {}

36
app/assets/javascripts/discourse/app/templates/mobile/components/categories-only-optimized.hbs Normal file
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@ -0,0 +1,36 @@
{{#if this.categories}}
{{#if this.filteredCategories}}
<div class="category-list optimized {{if this.showTopics 'with-topics'}}">
{{#each this.filteredCategories as |c|}}
<ParentCategoryRowOptimized
@category={{c}}
@showTopics={{this.showTopics}}
/>
{{/each}}
</div>
{{/if}}
{{#if this.mutedCategories}}
<div class="muted-categories">
<a href class="muted-categories-link" {{on "click" this.toggleShowMuted}}>
<h3 class="muted-categories-heading">{{i18n "categories.muted"}}</h3>
{{#if this.mutedToggleIcon}}
{{d-icon this.mutedToggleIcon}}
{{/if}}
</a>
<div
class="category-list optimized
{{if this.showTopics 'with-topics'}}
{{unless this.showMutedCategories 'hidden'}}"
>
{{#each this.mutedCategories as |c|}}
<ParentCategoryRowOptimized
@category={{c}}
@showTopics={{this.showTopics}}
@listType="muted"
/>
{{/each}}
</div>
</div>
{{/if}}
{{/if}}

29
app/assets/javascripts/discourse/app/templates/mobile/components/parent-category-row-optimized.hbs Normal file
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@ -0,0 +1,29 @@
{{#unless this.isHidden}}
<PluginOutlet
@name="category-list-above-each-category"
@outletArgs={{hash category=this.category}}
/>
<div
data-category-id={{this.category.id}}
data-notification-level={{this.category.notificationLevelString}}
style={{border-color this.category.color}}
class="category-list-item category {{if this.isMuted 'muted'}}"
>
<table class="topic-list">
<tbody>
<tr>
<th class="main-link">
<CategoryTitleLink @category={{this.category}} />
</th>
</tr>
{{#if this.category.description_excerpt}}
<tr class="category-description">
<td colspan="3">
{{html-safe this.category.description_excerpt}}
</td>
</tr>
{{/if}}
</tbody>
</table>
</div>
{{/unless}}

10
app/assets/stylesheets/mobile/topic-list.scss
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@ -144,6 +144,16 @@
border-left: 6px solid;
}
}
&.optimized {
tr {
border: none;
}
th {
padding: 10px 0 10px;
}
}
}
.category-list-item.category {

3
app/models/category_list.rb
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@ -140,7 +140,8 @@ class CategoryList
end
page = [1, @options[:page].to_i].max
if @guardian.can_lazy_load_categories?
if SiteSetting.desktop_category_page_style == "categories_only_optimized" ||
@guardian.can_lazy_load_categories?
query = query.limit(CATEGORIES_PER_PAGE).offset((page - 1) * CATEGORIES_PER_PAGE)
elsif page > 1
# Pagination is supported only when lazy load is enabled. If it is not,

1
app/models/category_page_style.rb
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@ -10,6 +10,7 @@ class CategoryPageStyle < EnumSiteSetting
def self.values
@values ||= [
{ name: "category_page_style.categories_only", value: "categories_only" },
{ name: "category_page_style.categories_only_optimized", value: "categories_only_optimized" },
{
name: "category_page_style.categories_with_featured_topics",
value: "categories_with_featured_topics",

1
config/locales/client.en.yml
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@ -2513,6 +2513,7 @@ en:
category_page_style:
categories_only: "Categories Only"
categories_only_optimized: "Categories Only (Optimized)"
categories_with_featured_topics: "Categories with Featured Topics"
categories_and_latest_topics: "Categories and Latest Topics"
categories_and_latest_topics_created_date: "Categories and Latest Topics (sort by topic created date)"

14
spec/requests/categories_controller_spec.rb
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@ -416,7 +416,19 @@ RSpec.describe CategoriesController do
expect(response.parsed_body["category_list"]["categories"].count).to eq(2)
end
it "does not paginate results when lazy_load_categories is disabled" do
it "paginates results wihen desktop_category_page_style is categories_only_optimized" do
SiteSetting.desktop_category_page_style = "categories_only_optimized"
stub_const(CategoryList, "CATEGORIES_PER_PAGE", 2) { get "/categories.json?page=1" }
expect(response.status).to eq(200)
expect(response.parsed_body["category_list"]["categories"].count).to eq(2)
stub_const(CategoryList, "CATEGORIES_PER_PAGE", 2) { get "/categories.json?page=2" }
expect(response.status).to eq(200)
expect(response.parsed_body["category_list"]["categories"].count).to eq(2)
end
it "does not paginate results by default" do
stub_const(CategoryList, "CATEGORIES_PER_PAGE", 2) { get "/categories.json?page=1" }
expect(response.status).to eq(200)
expect(response.parsed_body["category_list"]["categories"].count).to eq(4)