How to Remove the items from a category automatically based on date?

Question

I have created one category for displaying new arrivals and have added all items under this category. Now i need to delete old items (30 days old & 7 days old) from that category. This should happen daily and automatically.

Answer 1

You can achieve this by two methods.

1) Cron

you need to create a cron which will execute as per your required time frame and make the changes accordingly.

you can follow the following url to create a cron.

Remove product from category using cron

http://inchoo.net/magento/creating-cron-script-in-magento/

2) Observer

you need to create a observer which will execute on controller_action_predispatch event and makes the changes accordingly. for creating observer you can follow the following url.

http://inchoo.net/magento/newsletter-auto-subscribe-create-account-place-order-magento/

how to create an new observer on the event catalog_product_save_before

Code to delete product from category

Mage::getSingleton('catalog/category_api')->removeProduct('7','13409');

where 7 is the category id and 13409 is product id