PrestaShop 1.7 自定义模块中正确生成分类链接的教程

<?php
// your_module_name.php

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

    public function getContent()
    {
        // ... (如果模块有配置页面，这里是处理逻辑)
    }

    public function hookDisplaySomeHook($params)
    {
        // 获取所有嵌套分类
        $allCategories = Category::getNestedCategories(null, $this->context->language->id);

        // 将分类数据和 Link 对象赋给 Smarty
        $this->context->smarty->assign(array(
            'allCategories' => $allCategories,
            'link'          => $this->context->link, // 关键：将 Link 对象传递给 Smarty
        ));

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

    // ... (其他钩子或方法)
}

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

{foreach from=$allCategories item=mainCategory}
   {* 生成主分类链接 *}
   <a href="{$link->getCategoryLink($mainCategory.id_category, $mainCategory.link_rewrite)|escape:'html':'UTF-8'}">
       {$mainCategory.name}
   </a>
   {if isset($mainCategory.children) && !empty($mainCategory.children)}
       <ul>
           {foreach from=$mainCategory.children item=subCategory}
               <li>
                   {* 生成子分类链接 *}
                   <a href="{$link->getCategoryLink($subCategory.id_category, $subCategory.link_rewrite)|escape:'html':'UTF-8'}">
                       {$subCategory.name}
                   </a>
               </li>
           {/foreach}
       </ul>
   {/if}
{/foreach}

<?php
if (!defined('_PS_VERSION_')) {
    exit;
}

class YourModuleName extends Module
{
    public function __construct()
    {
        $this->name = 'yourmodulename';
        $this->tab = 'front_office_features';
        $this->version = '1.0.0';
        $this->author = 'Your Name';
        $this->need_instance = 0;
        $this->ps_versions_compliancy = [
            'min' => '1.7',
            'max' => _PS_VERSION_,
        ];
        $this->bootstrap = true;

        parent::__construct();

        $this->displayName = $this->l('Custom Category List Module');
        $this->description = $this->l('Displays a custom list of categories with correct links.');

        $this->confirmUninstall = $this->l('Are you sure you want to uninstall?');
    }

    public function install()
    {
        return parent::install() &&
               $this->registerHook('displayHome'); // 注册到某个钩子，例如首页钩子
    }

    public function uninstall()
    {
        return parent::uninstall();
    }

    /**
     * Hook to display content on the home page (example)
     */
    public function hookDisplayHome($params)
    {
        // 获取所有嵌套分类
        // 第一个参数 null 表示从根分类开始，第二个参数是语言ID
        $allCategories = Category::getNestedCategories(null, $this->context->language->id);

        // 将分类数据和 Link 对象赋给 Smarty
        $this->context->smarty->assign(array(
            'allCategories' => $allCategories,
            'link'          => $this->context->link, // 将 Link 对象传递给 Smarty
        ));

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

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

<div class="custom-category-list">
    <h3>{l s='Our Categories' mod='yourmodulename'}</h3>
    <ul>
        {foreach from=$allCategories item=mainCategory}
            <li>
                <a href="{$link->getCategoryLink($mainCategory.id_category, $mainCategory.link_rewrite)|escape:'html':'UTF-8'}">
                    {$mainCategory.name}
                </a>
                {if isset($mainCategory.children) && !empty($mainCategory.children)}
                    <ul>
                        {foreach from=$mainCategory.children item=subCategory}
                            <li>
                                <a href="{$link->getCategoryLink($subCategory.id_category, $subCategory.link_rewrite)|escape:'html':'UTF-8'}">
                                    {$subCategory.name}
                                </a>
                            </li>
                        {/foreach}
                    </ul>
                {/if}
            </li>
        {/foreach}
    </ul>
</div>