Feature Requests: Custom Field Conditions for Coupons & Multi-Select Product Pic

-- HikaShop version -- : 5.1.0
-- Joomla version -- : 5.2.2
-- PHP version -- : 8.2.20
-- Browser(s) name and version -- : chrome latest, firefox, etc.

Dear HikaShop Team,

I hope you are doing well.

I am writing to kindly request two improvements that I believe would significantly enhance the usability and flexibility of the coupon system in HikaShop. Both of these seem like natural and essential features, especially for stores with larger product databases.

1. Coupon Conditions Based on Custom Product Fields

Currently, coupons can only be restricted by product or category. However, many stores rely heavily on product custom fields (e.g., flags, product types, attributes, internal data fields).
It would be extremely useful if coupons could be restricted based on the value of one or more custom fields.

For example:

A coupon should apply only if the product has a custom field with a specific value.

Or: the coupon should apply if the field contains any value from a predefined list.

This would allow much more dynamic and practical coupon setups without creating dozens of categories or additional workarounds.

2. Multi-Select Product Picker for Coupons

The current coupon product selection workflow only allows adding products one by one.
For stores with hundreds or thousands of products, this is very time-consuming and difficult to manage.

A true multi-select product picker, where multiple products can be selected at once, would make a tremendous difference and is something I believe many users expect from a modern ecommerce platform.

This could be implemented via:

• checkbox selection,
• shift/ctrl multi-highlight,
• or even by allowing bulk actions and filters.

Why these features matter

Both of the above functionalities are quite commonly needed in real-world store setups, and in many cases feel like natural, expected features. Implementing them would greatly improve the user experience and reduce the need for custom plugin development.

I truly appreciate all the great work you do on HikaShop, and I hope you will consider adding these improvements in a future release. Thank you in advance for your attention, and please let me know if you need any additional details.

Kind regards,
Zsolt