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Cómo agregar un método de envío personalizado que funcione en WooCommerce 3

Question

He creado con éxito un nuevo método de envío y le he dado soporte para zonas de envío. Sin embargo, cuando selecciono el método del menú desplegable para agregarlo a la zona, no aparece en la ''lista de métodos seleccionados''.

Grabé un screencast gif para demostrar:

No puedo entender por qué no funciona. Funciona bien si selecciono uno de los métodos estándar ( Screencast GIF )

¿Alguien sabe qué está pasando aquí y cómo hacer que funcione?

Aquí está el código que tengo de este hilo oficial: Método de envío API :

if ( in_array( ''woocommerce/woocommerce.php'', apply_filters( ''active_plugins'', get_option( ''active_plugins'' ) ) ) ) {

    function request_a_shipping_quote_init() {
        if ( ! class_exists( ''WC_Request_Shipping_Quote_Method'' ) ) {
            class WC_Request_Shipping_Quote_Method extends WC_Shipping_Method {
                /**
                 * Constructor for your shipping class
                 *
                 * @access public
                 * @return void
                 */
                public function __construct() {
                    $this->id                 = ''request_a_shipping_quote''; // Id for your shipping method. Should be uunique.
                    $this->method_title       = __( ''Request a Shipping Quote'' );  // Title shown in admin
                    $this->method_description = __( ''Shipping method to be used where the exact shipping amount needs to be quoted'' ); // Description shown in admin

                    $this->title = "Request a Shipping Quote"; // This can be added as an setting but for this example its forced.

                    $this->supports = array(
                        ''shipping-zones''
                    );

                    $this->init();
                }

                /**
                 * Init your settings
                 *
                 * @access public
                 * @return void
                 */
                function init() {
                    // Load the settings API
                    $this->init_form_fields(); // This is part of the settings API. Override the method to add your own settings
                    $this->init_settings(); // This is part of the settings API. Loads settings you previously init.

                    // Save settings in admin if you have any defined
                    add_action( ''woocommerce_update_options_shipping_'' . $this->id, array( $this, ''process_admin_options'' ) );
                }

                function init_form_fields() {

                    $this->form_fields = array(

                        ''enabled'' => array(
                            ''title''       => __( ''Enable'', ''dc_raq'' ),
                            ''type''        => ''checkbox'',
                            ''description'' => __( ''Enable this shipping method.'', ''dc_raq'' ),
                            ''default''     => ''yes''
                        ),

                        ''title'' => array(
                            ''title''       => __( ''Title'', ''dc_raq'' ),
                            ''type''        => ''text'',
                            ''description'' => __( ''Title to be displayed on site'', ''dc_raq'' ),
                            ''default''     => __( ''Request a Quote'', ''dc_raq'' )
                        ),

                    );

                }

                /**
                 * calculate_shipping function.
                 *
                 * @access public
                 *
                 * @param mixed $package
                 *
                 * @return void
                 */

                public function calculate_shipping( $packages = array() ) {
                    $rate = array(
                        ''id''       => $this->id,
                        ''label''    => $this->title,
                        ''cost''     => ''0.00'',
                        ''calc_tax'' => ''per_item''
                    );

                    // Register the rate
                    $this->add_rate( $rate );
                }
            }
        }
    }

    add_action( ''woocommerce_shipping_init'', ''request_a_shipping_quote_init'' );

    function request_shipping_quote_shipping_method( $methods ) {
        $methods[''request_shipping_quote_shipping_method''] = ''WC_Request_Shipping_Quote_Method'';

        return $methods;
    }

    add_filter( ''woocommerce_shipping_methods'', ''request_shipping_quote_shipping_method'' );
}

Answer 1

Cambiar esta linea

public function calculate_shipping( $package ) {

a esta linea

función pública calculate_shipping ($ package = array ()) {

Answer 2

La clave de método en "woocommerce_shipping_methods" debe coincidir con el ID del método de envío

En tu caso: debes cambiar

function request_shipping_quote_shipping_method( $methods ) {
    $methods[''request_shipping_quote_shipping_method''] = ''WC_Request_Shipping_Quote_Method'';

    return $methods;
}

add_filter( ''woocommerce_shipping_methods'', ''request_shipping_quote_shipping_method'' );

A:

function request_shipping_quote_shipping_method( $methods ) {
    $methods[''request_a_shipping_quote''] = ''WC_Request_Shipping_Quote_Method'';

    return $methods;
}

add_filter( ''woocommerce_shipping_methods'', ''request_shipping_quote_shipping_method'' );