WooCommerce Shipping Methods for Plugin Development - php

Question

I've been endlessly trying to add a shipping method to the following code but with no luck. Could a good samaritan please offer some assistance.
I just need to add a shipping method.
Basically what the code does is add the fields to the shipping zones section in woo commerce setting | Shipping Zones.
I'd like to add a [flat rate to the zone that is created]
I've searched everywhere but with no luck. :-(
<?php
//Creating the Zone.
function DW_shipping_zone_init() {
// Getting the Shipping object
$available_zones = WC_Shipping_Zones::get_zones();
// Get all WC Countries
$all_countries = WC()->countries->get_countries();
//Array to store available names
$available_zones_names = array();
// Add each existing zone name into our array
foreach ($available_zones as $zone ) {
if( !in_array( $zone['zone_name'], $available_zones_names ) ) {
$available_zones_names[] = $zone['zone_name'];
}
}
// Check if our zone 'C' is already there
if( ! in_array( 'C', $available_zones_names ) ){
// Create an empty object
$zone_za = new stdClass();
//Add null attributes
$zone_za->zone_id = null;
$zone_za->zone_order =null;
// Add shipping zone name
$zone_za->zone_name = 'C';
// Instantiate a new shipping zone with our object
$new_zone_za = new WC_Shipping_Zone( $zone_za );
// Add South Africa as location
$new_zone_za->add_location( 'ZA', 'country' );
// Save the zone, if non existent it will create a new zone
$new_zone_za->save();
// Add our shipping method to that zone
$new_zone_za->add_shipping_method( 'some_shipping_method' );
}
add_action( 'init', 'DW_shipping_zone_init' );

Answer 1

You can create plugin for this:
Create one folder inside wp-content/pluigins/ with name "woocommerce-fast-delivery-system"
Inside "woocommerce-fast-delivery-system" folder, create two files as displayed below:
1. fast-delivery-shipping-method.php
<?php
/*
Plugin Name: WooCommerce Fast Delivery Shipping Method
*/
/**
* Check if WooCommerce is active
*/
$active_plugins = apply_filters( 'active_plugins', get_option( 'active_plugins' ) );
if ( in_array( 'woocommerce/woocommerce.php', $active_plugins) ) {
add_filter( 'woocommerce_shipping_methods', 'add_fast_delivery_shipping_method' );
function add_fast_delivery_shipping_method( $methods ) {
$methods[] = 'WC_Fast_Delivery_Shipping_Method';
return $methods;
}
add_action( 'woocommerce_shipping_init', 'fast_delivery_shipping_method_init' );
function fast_delivery_shipping_method_init(){
require_once 'class-fast-delivery-shipping-method.php';
}
}
2. class-fast-delivery-shipping-method.php
<?php
class WC_Fast_Delivery_Shipping_Method extends WC_Shipping_Method{
public function __construct(){
$this->id = 'fast_delivery_shipping_method';
$this->method_title = __( 'Fast Delivery Shipping Method', 'woocommerce' );
// Load the settings.
$this->init_form_fields();
$this->init_settings();
// Define user set variables
$this->enabled = $this->get_option( 'enabled' );
$this->title = $this->get_option( 'title' );
add_action( 'woocommerce_update_options_shipping_' . $this->id, array( $this, 'process_admin_options' ) );
}
public function init_form_fields(){
$this->form_fields = array(
'enabled' => array(
'title' => __( 'Enable/Disable', 'woocommerce' ),
'type' => 'checkbox',
'label' => __( 'Enable Fast Delivery Shipping', 'woocommerce' ),
'default' => 'yes'
),
'title' => array(
'title' => __( 'Method Tittle', 'woocommerce' ),
'type' => 'text',
'description' => __( 'This controls the title which the user sees during checkout.', 'woocommerce' ),
'default' => __( 'Fast Delivery Shipping', 'woocommerce' ),
)
);
}
public function is_available( $package ){
foreach ( $package['contents'] as $item_id => $values ) {
$_product = $values['data'];
$weight = $_product->get_weight();
if($weight > 10){
return false;
}
}
return true;
}
public function calculate_shipping($package){
//get the total weight and dimensions
$weight = 0;
$dimensions = 0;
foreach ( $package['contents'] as $item_id => $values ) {
$_product = $values['data'];
$weight = $weight + $_product->get_weight() * $values['quantity'];
$dimensions = $dimensions + (($_product->length * $values['quantity']) * $_product->width * $_product->height);
}
//calculate the cost according to the table
switch ($weight) {
case ($weight < 1):
switch ($dimensions) {
case ($dimensions <= 1000):
$cost = 3;
break;
case ($dimensions > 1000):
$cost = 4;
break;
}
break;
case ($weight >= 1 && $weight < 3 ):
switch ($dimensions) {
case ($dimensions <= 3000):
$cost = 10;
break;
}
break;
case ($weight >= 3 && $weight < 10):
switch ($dimensions) {
case ($dimensions <= 5000):
$cost = 25;
break;
case ($dimensions > 5000):
$cost = 50;
break;
}
break;
}
// send the final rate to the user.
$c= $this->add_rate( array(
'id' => $this->id,
'label' => $this->title,
'cost' => $cost
));
}
}