我有以下代码在Magento中创建自定义菜单：
<?php
/**
* Catalog navigation
*/
class Infortis_Ultimo_Block_Navigation extends Mage_Core_Block_Template
{
//NEW:
protected $_isAccordion = FALSE;
protected $_categoryInstance = null;
/**
* Current category key
*
* @var string
*/
protected $_currentCategoryKey;
/**
* Array of level position counters
*
* @var array
*/
protected $_itemLevelPositions = array();
protected function _construct()
{
$this->addData(array(
'cache_lifetime' => false,
'cache_tags' => array(Mage_Catalog_Model_Category::CACHE_TAG, Mage_Core_Model_Store_Group::CACHE_TAG),
));
}
/**
* Get Key pieces for caching block content
*
* @return array
*/
public function getCacheKeyInfo()
{
$shortCacheId = array(
'CATALOG_NAVIGATION',
Mage::app()->getStore()->getId(),
Mage::getDesign()->getPackageName(),
Mage::getDesign()->getTheme('template'),
Mage::getSingleton('customer/session')->getCustomerGroupId(),
'template' => $this->getTemplate(),
'name' => $this->getNameInLayout(),
$this->getCurrenCategoryKey()
);
$cacheId = $shortCacheId;
$shortCacheId = array_values($shortCacheId);
$shortCacheId = implode('|', $shortCacheId);
$shortCacheId = md5($shortCacheId);
$cacheId['category_path'] = $this->getCurrenCategoryKey();
$cacheId['short_cache_id'] = $shortCacheId;
return $cacheId;
}
/**
* Get current category key
*
* @return mixed
*/
public function getCurrenCategoryKey()
{
if (!$this->_currentCategoryKey) {
$category = Mage::registry('current_category');
if ($category) {
$this->_currentCategoryKey = $category->getPath();
} else {
$this->_currentCategoryKey = Mage::app()->getStore()->getRootCategoryId();
}
}
return $this->_currentCategoryKey;
}
/**
* Get catagories of current store
*
* @return Varien_Data_Tree_Node_Collection
*/
public function getStoreCategories()
{
$helper = Mage::helper('catalog/category');
return $helper->getStoreCategories();
}
/**
* Retrieve child categories of current category
*
* @return Varien_Data_Tree_Node_Collection
*/
public function getCurrentChildCategories()
{
$layer = Mage::getSingleton('catalog/layer');
$category = $layer->getCurrentCategory();
/* @var $category Mage_Catalog_Model_Category */
$categories = $category->getChildrenCategories();
$productCollection = Mage::getResourceModel('catalog/product_collection');
$layer->prepareProductCollection($productCollection);
$productCollection->addCountToCategories($categories);
return $categories;
}
/**
* Checkin activity of category
*
* @param Varien_Object $category
* @return bool
*/
public function isCategoryActive($category)
{
if ($this->getCurrentCategory()) {
return in_array($category->getId(), $this->getCurrentCategory()->getPathIds());
}
return false;
}
protected function _getCategoryInstance()
{
if (is_null($this->_categoryInstance)) {
$this->_categoryInstance = Mage::getModel('catalog/category');
}
return $this->_categoryInstance;
}
/**
* Get url for category data
*
* @param Mage_Catalog_Model_Category $category
* @return string
*/
public function getCategoryUrl($category)
{
if ($category instanceof Mage_Catalog_Model_Category) {
$url = $category->getUrl();
} else {
$url = $this->_getCategoryInstance()
->setData($category->getData())
->getUrl();
}
return $url;
}
/**
* Return item position representation in menu tree
*
* @param int $level
* @return string
*/
protected function _getItemPosition($level)
{
if ($level == 0) {
$zeroLevelPosition = isset($this->_itemLevelPositions[$level]) ? $this->_itemLevelPositions[$level] + 1 : 1;
$this->_itemLevelPositions = array();
$this->_itemLevelPositions[$level] = $zeroLevelPosition;
} elseif (isset($this->_itemLevelPositions[$level])) {
$this->_itemLevelPositions[$level]++;
} else {
$this->_itemLevelPositions[$level] = 1;
}
$position = array();
for($i = 0; $i <= $level; $i++) {
if (isset($this->_itemLevelPositions[$i])) {
$position[] = $this->_itemLevelPositions[$i];
}
}
return implode('-', $position);
}
/**
* Render category to html
*
* @param Mage_Catalog_Model_Category $category
* @param int Nesting level number
* @param boolean Whether ot not this item is last, affects list item class
* @param boolean Whether ot not this item is first, affects list item class
* @param boolean Whether ot not this item is outermost, affects list item class
* @param string Extra class of outermost list items
* @param string If specified wraps children list in div with this class
* @param boolean Whether ot not to add on* attributes to list item
* @return string
*/
protected function _renderCategoryMenuItemHtml($category, $level = 0, $isLast = false, $isFirst = false,
$isOutermost = false, $outermostItemClass = '', $childrenWrapClass = '', $noEventAttributes = false)
{
if (!$category->getIsActive()) {
return '';
}
$html = array();
// get all children
if (Mage::helper('catalog/category_flat')->isEnabled()) {
$children = (array)$category->getChildrenNodes();
$childrenCount = count($children);
} else {
$children = $category->getChildren();
$childrenCount = $children->count();
}
$hasChildren = ($children && $childrenCount);
// select active children
$activeChildren = array();
foreach ($children as $child) {
if ($child->getIsActive()) {
$activeChildren[] = $child;
}
}
$activeChildrenCount = count($activeChildren);
$hasActiveChildren = ($activeChildrenCount > 0);
// prepare list item html classes
$classes = array();
$classes[] = 'level' . $level;
$classes[] = 'nav-' . $this->_getItemPosition($level);
if ($this->isCategoryActive($category)) {
$classes[] = 'active';
}
$linkClass = '';
if ($isOutermost && $outermostItemClass) {
$classes[] = $outermostItemClass;
$linkClass = ' class="'.$outermostItemClass.'"';
}
if ($isFirst) {
$classes[] = 'first';
}
if ($isLast) {
$classes[] = 'last';
}
if ($hasActiveChildren) {
$classes[] = 'parent';
}
//NEW: add special class if level == 1 and menu is not an accordion.
if ($this->_isAccordion == FALSE && $level == 1) {
$classes[] = 'item';
}
// prepare list item attributes
$attributes = array();
if (count($classes) > 0) {
$attributes['class'] = implode(' ', $classes);
}
if ($hasActiveChildren && !$noEventAttributes) {
$attributes['onmouseover'] = 'toggleMenu(this,1)';
$attributes['onmouseout'] = 'toggleMenu(this,0)';
}
// assemble list item with attributes
$htmlLi = '<li';
foreach ($attributes as $attrName => $attrValue) {
$htmlLi .= ' ' . $attrName . '="' . str_replace('"', '\"', $attrValue) . '"';
}
$htmlLi .= '>';
$html[] = $htmlLi;
if ($level == 0 && $hasChildren) {
$html[] = '<a href="javascript:void(0)"'.$linkClass.'>';
$html[] = '<span>' . $this->escapeHtml($category->getName()) . '</span>';
$html[] = '</a>';
}
else {
$html[] = '<a href="'.$this->getCategoryUrl($category).'"'.$linkClass.'>';
$html[] = '<span>' . $this->escapeHtml($category->getName()) . '</span>';
$html[] = '</a>';
}
// render children
$htmlChildren = '';
$j = 0;
foreach ($activeChildren as $child) {
$htmlChildren .= $this->_renderCategoryMenuItemHtml(
$child,
($level + 1),
($j == $activeChildrenCount - 1),
($j == 0),
false,
$outermostItemClass,
$childrenWrapClass,
$noEventAttributes
);
$j++;
}
if (!empty($htmlChildren)) {
//NEW: add opener if menu is used as accordion.
if ($this->_isAccordion == TRUE)
$html[] = '<span class="opener"> </span>';
if ($childrenWrapClass) {
$html[] = '<div class="' . $childrenWrapClass . '">';
}
$html[] = '<ul class="level' . $level . '">';
$html[] = $htmlChildren;
$html[] = '</ul>';
if ($childrenWrapClass) {
$html[] = '</div>';
}
}
$html[] = '</li>';
$html = implode("\n", $html);
return $html;
}
/**
* Render category to html
*
* @deprecated deprecated after 1.4
* @param Mage_Catalog_Model_Category $category
* @param int Nesting level number
* @param boolean Whether ot not this item is last, affects list item class
* @return string
*/
public function drawItem($category, $level = 0, $last = false)
{
return $this->_renderCategoryMenuItemHtml($category, $level, $last);
}
/**
* Enter description here...
*
* @return Mage_Catalog_Model_Category
*/
public function getCurrentCategory()
{
if (Mage::getSingleton('catalog/layer')) {
return Mage::getSingleton('catalog/layer')->getCurrentCategory();
}
return false;
}
/**
* Enter description here...
*
* @return string
*/
public function getCurrentCategoryPath()
{
if ($this->getCurrentCategory()) {
return explode(',', $this->getCurrentCategory()->getPathInStore());
}
return array();
}
/**
* Enter description here...
*
* @param Mage_Catalog_Model_Category $category
* @return string
*/
public function drawOpenCategoryItem($category) {
$html = '';
if (!$category->getIsActive()) {
return $html;
}
$html.= '<li';
if ($this->isCategoryActive($category)) {
$html.= ' class="active"';
}
$html.= '>'."\n";
$html.= '<a href="'.$this->getCategoryUrl($category).'"><span>'.$this->htmlEscape($category->getName()).'</span></a>'."\n";
if (in_array($category->getId(), $this->getCurrentCategoryPath())){
$children = $category->getChildren();
$hasChildren = $children && $children->count();
if ($hasChildren) {
$htmlChildren = '';
foreach ($children as $child) {
$htmlChildren.= $this->drawOpenCategoryItem($child);
}
if (!empty($htmlChildren)) {
$html.= '<ul>'."\n"
.$htmlChildren
.'</ul>';
}
}
}
$html.= '</li>'."\n";
return $html;
}
/**
* Render categories menu in HTML
*
* @param bool Add opener if menu is used as accordion.
* @param int Level number for list item class to start from
* @param string Extra class of outermost list items
* @param string If specified wraps children list in div with this class
* @return string
*/
public function renderCategoriesMenuHtml($isAccordion = FALSE, $level = 0, $outermostItemClass = '', $childrenWrapClass = '')
{
//NEW: save additional attribute
$this->_isAccordion = $isAccordion;
$activeCategories = array();
foreach ($this->getStoreCategories() as $child) {
if ($child->getIsActive()) {
$activeCategories[] = $child;
}
}
$activeCategoriesCount = count($activeCategories);
$hasActiveCategoriesCount = ($activeCategoriesCount > 0);
if (!$hasActiveCategoriesCount) {
return '';
}
$html = '';
$j = 0;
foreach ($activeCategories as $category) {
$html .= $this->_renderCategoryMenuItemHtml(
$category,
$level,
($j == $activeCategoriesCount - 1),
($j == 0),
true,
$outermostItemClass,
$childrenWrapClass,
true
);
$j++;
}
return $html;
}
}
我想在菜单项中添加自定义类别属性（menu_label）。我使用本教程http://www.atwix.com/magento/add-category-attribute/创建了自定义类别属性
该属性在管理员中显示正常，我可以将其打印出我的普通模板文件但无法在此菜单中显示。
我以为$ this-> escapeHtml（$ category-> getMenuLabel（））会完成它，但这不输出任何东西。
有任何想法吗？
你必须考虑到Magento对平面类别的开/关行为不同。我想你可能在你的情况下属于平面类别，因为它应该起作用。
（请检查系统>配置>目录>目录>前端“使用平面目录类别”。如果设置为“是”，那么这就是您的问题所在。
要解决此问题，请将其添加到“frontend”节点中的config.xml：
<events>
<catalog_category_flat_loadnodes_before>
<observers>
<somemodule>
<type>singleton</type>
<class>somemodule/observer</class>
<method>addMenuAttributes</method>
</somemodule>
</observers>
</catalog_category_flat_loadnodes_before>
</events>
然后在模块的Model文件夹中创建一个Observer.php（模型文件夹也应该在config.xml中声明，当然也是如此）。
这是观察者代码：
<?php
class Somecompany_Somemodule_Model_Observer {
public function addMenuAttributes(Varien_Event_Observer $observer) {
$observer->getSelect()->columns(
array('menu_label')
);
}
你的假设不正确：
$this->escapeHtml($category->getMenuLabel())
假设$ category确实是一个Category Model（Mage_Catalog_Model_category），当它不是，它是一个Node对象。
如果你看这里：
Mage_Catalog_Model_Observer::_addCategoriesToMenu()
您将注意到实际目录模型用于创建数组的位置，该数组作为Varien_Data_Tree_Node传递给Navigation例程。您可以在此处添加自定义属性，然后在块内访问它。
$categoryData = array(
'name' => $category->getName(),
'id' => $nodeId,
'url' => Mage::helper('catalog/category')->getCategoryUrl($category),
'is_active' => $this->_isActiveMenuCategory($category),
'my_attribute' => $category->getData('my_attribute')
);
然后，您就可以访问自定义菜单块中的属性：
$child->getData('my_attribute');
//$this->escapeHtml($category->getData('my_attribute'))