There were some missing things and others unnecessary. The correct way to make it work is:
add_action('woocommerce_shipping_init', 'request_shipping_quote_method');
function request_shipping_quote_method() {
if ( ! class_exists( 'WC_Request_Shipping_Quote_Method' ) ) {
class WC_Request_Shipping_Quote_Method extends WC_Shipping_Method {
public function __construct( $instance_id = 0) {
$this->id = 'request_shipping_quote';
$this->instance_id = absint( $instance_id );
$this->domain = 'rasq';
$this->method_title = __( 'Request a Shipping Quote', $this->domain );
$this->method_description = __( 'Shipping method to be used where the exact shipping amount needs to be quoted', $this->domain );
$this->supports = array(
'shipping-zones',
'instance-settings',
'instance-settings-modal',
);
$this->init();
}
## Load the settings API
function init() {
$this->init_form_fields();
$this->init_settings();
$this->enabled = $this->get_option( 'enabled', $this->domain );
$this->title = $this->get_option( 'title', $this->domain );
$this->info = $this->get_option( 'info', $this->domain );
add_action('woocommerce_update_options_shipping_' . $this->id, array($this, 'process_admin_options'));
}
function init_form_fields() {
$this->instance_form_fields = array(
'title' => array(
'type' => 'text',
'title' => __('Title', $this->domain),
'description' => __( 'Title to be displayed on site.', $this->domain ),
'default' => __( 'Request a Quote ', $this->domain ),
),
'cost' => array(
'type' => 'text',
'title' => __('Coast', $this->domain),
'description' => __( 'Enter a cost', $this->domain ),
'default' => '',
),
);
}
public function calculate_shipping( $packages = array() ) {
$rate = array(
'id' => $this->id,
'label' => $this->title,
'cost' => '0',
'calc_tax' => 'per_item'
);
$this->add_rate( $rate );
}
}
}
}
add_filter('woocommerce_shipping_methods', 'add_request_shipping_quote');
function add_request_shipping_quote( $methods ) {
$methods['request_shipping_quote'] = 'WC_Request_Shipping_Quote_Method';
return $methods;
}
Code goes in function.php file of your active child theme (active theme).
Tested and works.
Here the shipping method selector now displays this "Request a shipping coast" method:
Once selected and added, it's created this time:
If you edit it:
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