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I am using a template which calls a function in block, and inside that block I am trying to pull a current category with Mage::registry('current_category'). However it always returns NULL. I’ve tried doing this from product page, search page – still nothing. Is there any reason why it would return NULL, what are some things I could check?
It’s null because it’s not set. The registry acts as a system for global variables that don’t rely on PHP’s built in global support. It is not guaranteed that any particular variable that’s been registered will be available on every page. For example, you said you tried this on the search page. What should the
current_categorybe on the search page?It’s null because it’s supposed to be.