How to Display the categories in tree structure - magento

Question

How to display all the categories in tree structure alike in a pop up window ie.) if i click the select category button in my page it should show the popup window with the tree
structured categories.i tried like this which will show all the categories in dropdown that does not look good
<?php
$categories = Mage::getModel('catalog/category')->getCollection()->addAttributeToSelect('*')->addIsActiveFilter();
$allcatid = array();
$k=0;
foreach ($categories as $c) {
$allcatid[$k] = $c->getId();
$k++;
}
$finalcat=array_shift($allcatid);
$root= Mage::app()->getStore()->getRootCategoryId();
?>
<select id="category" class="myinput-text required-entry widthinput" name="category" >
<?php foreach($allcatid as $keycat){?>
<option value="<?php echo $keycat;?>"><?php echo Mage::getModel("catalog/category")->load($keycat)->getName(); ?></option>
<?php } ?>

Answer 1

This will help you to fetch you category tree
<?php
$rootcatId= Mage::app()->getStore()->getRootCategoryId();
$categories = Mage::getModel('catalog/category')->getCategories($rootcatId);
function get_categories($categories) {
$array= '<ul>';
foreach($categories as $category) {
$cat = Mage::getModel('catalog/category')->load($category->getId());
$count = $cat->getProductCount();
$array .= '<li>'.''. $category->getName() . "(".$count.")\n";
if($category->hasChildren()) {
$children = Mage::getModel('catalog/category')->getCategories($category->getId());
$array .= get_categories($children);
}
$array .= '</li>';
}
return $array . '</ul>';
}
echo get_categories($categories); ?>

Answer 2

Output View
This code is included an end-level category with product count.
Step 1 Goto theme/layout/catalog.xml put this code in the file.
<reference name="left">
<block type="catalog/navigation" name="category_list_sidebar" template="catalog/navigation/categorymenu.phtml"/>
</reference>
Step 2 Goto theme/template/catalog/ and create navigation folder also create categorymenu.phtml file inside folder and put code into file.
<?php
$_helper = Mage::helper('catalog/category');
$_categories = $_helper->getStoreCategories();
$currentCategory = Mage::registry('current_category');
?>
<div class="block block-list block-categorys">
<div class="block-title">
<strong><span>Category</span></strong>
</div>
<div class="block-content">
<ul class="category_sub">
<?php
if (count($_categories) > 0){
global $index;
global $data;
foreach($_categories as $_category){
$check_child_class = check_child_par($_category->getId());
$collaps = ($check_child_class)? "<span class='show-cat'>+</span>" : "";
echo "<li class='".$check_child_class."'>";
echo "<a href='".$_helper->getCategoryUrl($_category)."'>".$_category->getName();
echo " (".product_count($_category->getId()).")";
echo "</a>".$collaps;
echo check_child($_category->getId());
echo "</li>";
}
}
?>
</ul>
</div>
</div>
<?php
function check_child($cid){
$_helper = Mage::helper('catalog/category');
$_subcategory = Mage::getModel('catalog/category')->load($cid);
$_subsubcategories = $_subcategory->getChildrenCategories();
if (count($_subsubcategories) > 0){
echo "<ul>";
foreach($_subsubcategories as $_subcate){
$check_child_class = check_child_par($_subcate->getId());
$collaps = ($check_child_class)? "<span class='show-cat'>+</span>" : "";
echo "<li class='".$check_child_class."'>";
echo "<a href='".$_helper->getCategoryUrl($_subcate)."'>".$_subcate->getName();
echo " (".product_count($_subcate->getId()).")";
echo "</a>".$collaps;
echo check_child($_subcate->getId());
echo "</li>";
}
echo "</ul>";
}else{
return "";
}
}
function check_child_par($cid){
$_subcat = Mage::getModel('catalog/category')->load($cid);
$_subsubcats = $_subcat->getChildrenCategories();
if (count($_subsubcats) > 0){
return "parent";
}else{
return "";
}
}
function product_count($cid){
$products_count = Mage::getModel('catalog/category')->load($cid)->getProductCount();
return $products_count;
}
?>

Answer 3

enter code here
<?php $_helper = Mage::helper('catalog/category') ?>
<?php $_categories = $_helper->getStoreCategories() ?>
<?php $currentCategory = Mage::registry('current_category') ?>
<?php if (count($_categories) > 0): ?>
<ul>
<?php foreach($_categories as $_category): ?>
<li>
<a href="<?php echo $_helper->getCategoryUrl($_category) ?>">
<?php echo $_category->getName() ?>
</a>
<?php $_category = Mage::getModel('catalog/category')->load($_category->getId()) ?>
<?php $_subcategories = $_category->getChildrenCategories() ?>
<?php if (count($_subcategories) > 0): ?>
<ul>
<?php foreach($_subcategories as $_subcategory): ?>
<li>
<a href="<?php echo $_helper->getCategoryUrl($_subcategory) ?>">
<?php echo $_subcategory->getName() ?>
</a>
</li>
<?php endforeach; ?>
</ul>
<?php endif; ?>
</li>
<?php endforeach; ?>
</ul>
<?php endif; ?>
this will fetch all catgory and sub category,,,hope this will help you