Or would it be possible to hide the "add to cart" button for every product, but still show the quantity field and have only one "add to cart" button ?
-> The client add quantities for each product and only click one time on the add to cart button and all the products are added to the cart with the right quantity !?
I must apologize for the extreme delay in response.
What you are referring to is a bulk adding of product to a cart correct ? If so then this would require a custom solution as each add to cart button is tied to the specific product.
You might be able to do this with some custom coding but this is out of our forum scope.
Last reply of «In the future, this feature will be supported by inside WooCommerce Views.»
I'm not sure he's speaking about enabling AJAX when show_quantity_in_button is set "yes".
This functionality was actually available in our Woocommerce views plugin since version 2.5.5 but it broke when Woocommerce core updated to version 2.5.2
However we have released an update to woocommerce views that should fix this problem.