PrestaShop 1.7：在自定义模块中正确获取和显示分类链接

<?php
// module_name.php (或您的模块主文件)

// 确保您已正确引入必要的类，例如：
// use Category;
// use Context; // 通常 Context 是全局可用的

class YourModuleName extends Module
{
    public function __construct()
    {
        // ... 其他构造函数代码 ...
    }

    public function renderWidget($hookName = null, array $configuration = [])
    {
        // 获取所有分类数据
        $allCategories = Category::getNestedCategories(null, $this->context->language->id);

        // 将分类数据和 Link 对象分配给 Smarty
        $this->context->smarty->assign(array(
            'allCategories' => $allCategories,
            'link' => $this->context->link, // 关键步骤：将当前的Link对象传递给Smarty
        ));

        // 渲染模板
        return $this->fetch('module:'.$this->name.'/views/templates/widget/block.tpl');
    }

    // ... 其他模块方法 ...
}

{* module:your_module_name/views/templates/widget/block.tpl *}

{if isset($allCategories) && !empty($allCategories)}
    <div class="category-list">
        {foreach $allCategories as $mainCategory}
            <div class="main-category">
                {* 使用 $link->getCategoryLink() 生成主分类链接 *}
                <a href="{$link->getCategoryLink($mainCategory.id_category, $mainCategory.link_rewrite)|escape:'html':'UTF-8'}">
                    {$mainCategory.name|escape:'html':'UTF-8'}
                </a>

                {if isset($mainCategory.children) && !empty($mainCategory.children)}
                    <ul class="sub-categories">
                        {foreach $mainCategory.children as $subCategory}
                            <li>
                                {* 使用 $link->getCategoryLink() 生成子分类链接 *}
                                <a href="{$link->getCategoryLink($subCategory.id_category, $subCategory.link_rewrite)|escape:'html':'UTF-8'}">
                                    {$subCategory.name|escape:'html':'UTF-8'}
                                </a>
                            </li>
                        {/foreach}
                    </ul>
                {/if}
            </div>
        {/foreach}
    </div>
{else}
    <p>没有找到任何分类。</p>
{/if}