halo-theme-dream2.0-plus/templates/widget/categories.html

<div xmlns:th="https://www.thymeleaf.org"
     th:fragment="widget (hide)"
     th:class="'card widget ' + ${hide}"
     th:with="num = ${#strings.isEmpty(theme.config.sidebar.categories_num)? 10 : T(java.lang.Integer).parseInt(theme.config.sidebar.categories_num)},
     categories = ${categoryFinder.listAsTree()},
     isEmpty = ${#lists.isEmpty(categories)}">
    <div class="card-title">
        <i class="ri-apps-line card-title-label"></i><span>分类</span>
        <a th:if="${theme.config.sidebar.categories_more}" class="card-more" th:href="@{/categories}">更多<i
                class="ri-arrow-right-double-line"></i></a>
    </div>
    <div th:if="${isEmpty}" class="card-empty">暂无分类</div>
    <div th:unless="${isEmpty}" class="card-content">
        <ul class="menu-list">
            <th:block th:fragment="categories (categories)">
                <li th:each="category,itemIndex : ${categories}" th:unless="${itemIndex.index >= num}">
                    <a class="level is-marginless" th:href="${category.status.permalink}">
                        <span class="level-item" th:text="${category.spec.displayName}"></span>
                        <span class="level-item tag" th:text="${category.status.postCount}"></span>
                    </a>
                    <ul th:if="${!#lists.isEmpty(category.children)}">
                        <th:block th:replace="~{:: categories (${category.children})}"/>
                    </ul>
                </li>
            </th:block>
        </ul>
    </div>
</div>