woocommerce shipping method with 3.0 api - php

Question

Hi there, I'm trying to build a very simple plugin for woocommerce to show some information about delivery without taxes. The diference for the other methods is the extra HTML field.
I read a lot of the documentation but I think there is something miss on the configuration. The admin it seems working. But the method didn't appear on checkout screen. The code is below:
<?php
if ( ! defined( 'WPINC' ) ) {
die('security by preventing any direct access to your plugin file');
}
if (in_array('woocommerce/woocommerce.php', apply_filters('active_plugins', get_option('active_plugins')))) {
function shipping_delivery_info() {
if (!class_exists('shipping_delivery_info')) {
class shipping_delivery_info extends WC_Shipping_Method {
public function __construct( $instance_id = 0) {
$this->id = 'shipping_delivery_info';
$this->instance_id = absint( $instance_id );
$this->method_title = __('Shipping Delivery Info', 'shipping_delivery_info');
$this->method_description = __('A Woocommerce custom shipping method plugin, that shows ' .
'some shipping information to costumer, like free shipping but with HTML field.',
'shipping_delivery_info');
$this->supports = array(
'shipping-zones',
'instance-settings',
'instance-settings-modal',
);
$this->init();
}
/**
* Load the settings API
*/
function init() {
// Load the settings
$this->init_form_fields();
$this->init_settings();
$this->enabled = $this->get_option( 'enabled' );
$this->title = $this->get_option( 'title' );
$this->info = $this->get_option( 'info' );
add_action('woocommerce_update_options_shipping_' . $this->id, array($this, 'process_admin_options'));
}
function init_form_fields() {
$this->instance_form_fields = array(
'enabled' => array(
'title' => __( 'Enable/Disable', 'shipping_delivery_info'),
'type' => 'checkbox',
'label' => __( 'Enable this shipping method', 'shipping_delivery_info'),
'default' => 'yes',
),
'title' => array(
'title' => __('Title', 'shipping_delivery_info'),
'type' => 'text',
'description' => __( 'The title to be displayed during checkout.', 'shipping_delivery_info' ),
'default' => __('Shipping Information', 'shipping_delivery_info'),
),
'info' => array(
'title' => __('Information', 'shipping_delivery_info'),
'type' => 'text',
'description' => __( 'Information about delivery and its taxes.', 'shipping_delivery_info' ),
'default' => __('Insert here some HTML.'),
),
);
}
}
}
}
add_action('woocommerce_shipping_init', 'shipping_delivery_info');
function add_shipping_delivery_info($methods)
{
$methods['shipping_delivery_info'] = 'shipping_delivery_info';
return $methods;
}
add_filter('woocommerce_shipping_methods', 'add_shipping_delivery_info');
function shipping_delivery_info_message($posted)
{
$packages = WC()->shipping->get_packages();
$chosen_methods = WC()->session->get('chosen_shipping_methods');
if (is_array($chosen_methods) && in_array('shipping_delivery_info', $chosen_methods)) {
foreach ($packages as $i => $package) {
if ($chosen_methods[$i] != "shipping_delivery_info") {
continue;
}
$shipping_delivery_info = new shipping_delivery_info();
$message = $shipping_delivery_info->settings['info'];
return $message;
/*$messageType = "info";
wc_add_notice($message, $messageType);*/
}
}
}
add_action('woocommerce_review_order_before_cart_contents', 'shipping_delivery_info_message', 10);
add_action('woocommerce_after_checkout_validation', 'shipping_delivery_info_message', 10);
}

Answer 1

You need to add the calculate_shipping function to your class
/**
* function calculate_shipping.
*
* #access public
* #param mixed $package
* #return void
*/
public function calculate_shipping( $package = array() ) {
$rate = array(
'id' => 'My Method id',
'label' => 'New method',
'cost' => 0,
'calc_tax' => 'per_item'
);
$this->add_rate( $rate );
}
}
Anyway, i think you don't need to add a new shipping method just to show some info at the cart, instead you can use these actions:
add_action( 'woocommerce_review_order_before_submit', 'add_tracking_notification', 12 );
add_action('woocommerce_proceed_to_checkout', 'add_tracking_notification');
function add_tracking_notification() {
echo '<h5 style="margin-bottom:10px">This is a custom message</h5>';
}