Hi,
artinzaman wrote: Which table I should put the custom date field so the customer have to enter when they add a product to shopping cart?
You have to create an "item" custom field. The table will be "item".
For what I read about your requirements, you should use a custom price plugin.
It will give you the possibility to calculate dynamically the price of some products depending the custom fields.
You can use "product" custom field to store variable data that the custom won't see (if the custom field is not displayed in the front-end). These field can be used afterward by the plugin in order to calculate/process the final product price ; using the item custom fields (the dates) and some variables (hardcoded in the plugin and read dynamically in a product custom field).
www.hikashop.com/en/support/documentatio...mentation.html#other
Regards,