Programmatically add breadcrumbs paths in Magento? - magento

Question

In Magento, when the user directly accesses the product page, such as from Google, the breadcrumbs would only be "Home" -> "Product Name".
How can I add categories in there even when users access the page directly from Google?
For example, on this page, I want to add the categories "Wedding Apparel" and "Wedding Dresses" in the breadcrumbs. I came up with an idea other than hard editing breadcrumbs.phtml but is there any way I can programmatically add a breadcrumbs item in template/catalog/product/view.phtml ?
I can get the categories (title and link) of the current product and then use some function / method to add them in the breadcrumbs dynamically and programmatically. Is this possible?

Answer 1

Here's the code that forces Magento to display the complete breadcrumb, including categories by looping trough each category for the current product:
© Danny Vince
<?php
if ($product = Mage::registry('current_product')) {
$categories = $product->getCategoryCollection()->load();
if($categories) {
foreach ($categories as $category)
{
if($category) {
$category = Mage::getModel('catalog/category')->load($category->getId());
break;
}
}
}
$lastCrumbName = $product->getName();
$lastCategoryAdjust = 0;
}
else {
if($category = Mage::registry('current_category')) {
$lastCrumbName = $category->getName();
}
$lastCategoryAdjust = 1;
}
if($category) {
if($path = $category->getPath()) {
$path = explode('/', $path);
$crumbs = array('home' => array('label' => 'Home',
'title' => 'Home',
'link' => Mage::getBaseUrl(Mage_Core_Model_Store::URL_TYPE_WEB),
'first' => true,
'last' => false
));
for($i = 2; $i < count($path) - $lastCategoryAdjust; $i++) {
$cur_category = Mage::getModel('catalog/category')->load($path[$i]);
if($cur_category && $cur_category->getIsActive()) {
$crumbs['category' . $path[$i]] = array('label' => $cur_category->getName(),
'title' => $cur_category->getName(),
'link' => $cur_category->getUrl(),
'first' => false,
'last' => false
);
}
}
$crumbs['current'] = array('label' => $lastCrumbName,
'title' => '',
'link' => '',
'first' => false,
'last' => true
);
}
}
?>