Could not get custom attribute in product listing

Question

I have custom price attribute called wholesale_price.

The wholesale_price is only needed for one of the store view. So i choose specific store view, then update the wholesale_price.

The problem is:
    I can get the wholesale_price variable through $_product->getWholesalePrice() in product view page but not in product listing page.
In product listing page, the $_product->getWholesalePrice() is empty.

Eventually, after i tried to save it from default store view. The wholesale_price is available in the product listing page.

So everytime i need to update the price, i need to go by saving from default store, and it is annoying.

Could you please tell me what is the code difference between saving from default store view and the others store view?

Thank you!

Answer 1

The solution I get is using the saveAfter event and explicitly set default store WholesalePrice to be updated.

Mage::getSingleton('catalog/product_action')->updateAttributes(array($product->getId()), $attributes , 0);

Thank you guys for your help.