Anchor Option is not showing in Admin

Question

I'm experiencing this issue with Magento 1.9.1 single store,

probably my database got damaged:

When I edit an existing category or add a new one the option to select if the category is anchored or not is not appearing

I have backups of some days ago but if there is another way to recover that would be better.

In the frontend some categories still have the layered navigation even if in the admin area I can't choose whether to enable it or not.

Answer 1

You can fix it. Basic you need change the frontend_input and default_value columns of in_anchor attribute. There are two ways to do it.

1. Create a module to do it

You can create a extension to create/edit attributes category following this tutorial: http://www.atwix.com/magento/add-category-attribute/

To fix is_anchor attribute, you need this:

$installer->updateAttribute(Mage_Catalog_Model_Category::ENTITY, 'is_anchor', 'frontend_input', 'select'); 
$installer->updateAttribute(Mage_Catalog_Model_Category::ENTITY, 'is_anchor', 'default_value', NULL);

2. Change values direct in database

 UPDATE `DATABASE_HERE`.`eav_attribute` SET `frontend_input`='select', `default_value`='NULL' WHERE `attribute_id`='51';

NOTE: Check attribute_id of is_anchor and replace if necessary (in my case it's 51).

NOTE2: Be careful and do a backup before!!!