Make only certain carriers available if VAT number is entered

[Aldar]

Hi

I'm currently trying to figure out the best way to implement this idea.

What I want to achieve is to make only certain carriers available when (non registered) customers make a purchase for company by filling "Company" and "VAT number" fields in quick order. 

At the moment I am not sure if this should be done

1. Overriding Cart class method "getDeliveryOptionList()".
2. Creating a custom Carrier module.
3. Modifying template file.
    

Anybody has suggestions?

 

 

Aldar

Edited September 10, 2016 by Aldar (see edit history)

[Aldar]

I think I figured it out. 

I went for the override method and although I'm not sure it is the best solution but at least it's short and it's working.
 

Sure you could make delivery method ID (sort of) to be configurable but for sake of this example I left it as static.

class Cart extends CartCore {
	public function getDeliveryOptionList(Country $default_country = null, $flush = false) {
		$option_list = parent::getDeliveryOptionList($default_country, $flush);
		
		// get delivery address ID
		$id_address_delivery = Context::getContext()->cart->id_address_delivery;
		
		// Get address detail data by ID		
		$address_data = Address::initialize($id_address_delivery);
		
		if ($address_data->vat_number == '') {
			// remove the carrier that is meant only for business customers
			unset($option_list[key($option_list)]['3,']); 
		} else {
                        // remove the carrier that is meant only for private customers
			unset($option_list[key($option_list)]['4,']);
		}
		
		return $option_list;
	}
}

Edited September 10, 2016 by Aldar (see edit history)