Magento categories are not being displayed. - php

Question

In my-theme/template/catalog/navigation/left.phtml here is code for listing of all categories and its respective sub-categories and its working correctly. Here is code of left.phtml file
<?php $_menu = $this->renderCategoriesMenuHtml(0,'level-top') ?>
<?php if($_menu): ?>
<ul ><?php echo $_menu ?>
<ul>
<?php endif ?>
I found renderCategoriesMenuHtml() function in app / code / core / Mage / Catalog / Block/navigation.php here is code of navigation.php file
class Mage_Catalog_Block_Navigation extends Mage_Core_Block_Template
{
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';
}
// 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;
$html[] = '<a href="'.$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)) {
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";
$html.= '<span>'.$this->htmlEscape($category->getName()).'</span>'."\n";
if (in_array($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 $html;
}
/**
* Render categories menu in HTML
*
* #param int Level number for list item class to start from
* #param string Extra class of outermost list items
* #param string If specified wraps children list in div with this class
* #return string
*/
public function renderCategoriesMenuHtml($level = 0, $outermostItemClass = '', $childrenWrapClass = '')
{
$activeCategories = array();
foreach ($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;
}
}
Now. I have created a new file template to list all categories and its subcategories at location my-theme/template/catalog/navigation/all_cat.phtml and I pasted the code of left.phtml file into all_cat.phtml file.
But when I'm executing this file on fronted I could not see any such categories and subcategories in all_cat.phtml file. I dont know what I'm missing and How to correct it. So please someone help me to find it out !

Answer 1

Please try this
{{block type="catalog/navigation" name="catalog.nav" template="catalog/navigation/all_cat.phtml"}}