Unable to get product category name, url from product detail view page

Question

Its a uncommon issue that i face while getting the product category in product detail page.

My code is working fine in staging and not working in live.

I used below code to get the current category.

if (Mage::registry('current_category'))
{
  // Category Name
  $current_category =  Mage::registry('current_category')->getName();
  // Category ID
  $category_id =  Mage::registry('current_category')->getId();
  // Catergory Url
  $url = Mage::getModel("catalog/category")->load($category_id)->getUrl();
}

This code is working fine in staging not in live.

I tried this approach also(Method 2)

$categoryIds = $_product->getCategoryIds();

    foreach($categoryIds as $categoryId) {
          $category = Mage::getModel('catalog/category')->load($categoryId);
          $categorynm =  $category->getName();
          $url = $category->getUrl();    
    }

Using this method also i am unable to get the category url in live. Please help me to find this issue.its totally uncommon scenario works in staging and not working in live.

I tried several method from stack exchange questions but i am unable to fix this issue.

Answer 1

Take a look at how to get category name of current product (on product detail page) in magento

The reason it may work in dev is because you are going directly from a category to a product page. If you visit the product page directly nothing will be display because a product can be attached to multiple categories so magento does not now which category should get display.

The current_category registry is not always set, see

viewAction() in app/code/core/Mage/Catalog/controllers/ProductController.php

prepareAndRender() in app/code/core/Mage/Catalog/Helper/Product/View.php

initProduct() in app/code/core/Mage/Catalog/Helper/Product.php Line #321

To get the category id on a product detail page you need to do something like

$categoryIds = $_product->getCategoryIds();

if(count($categoryIds) ){
   $firstCategoryId = $categoryIds[0];
   $_category = Mage::getModel('catalog/category')->load($firstCategoryId);

    echo $_category->getName();
 }