Loading API content in WooCommerce Shipping Method API Plugin

I am building a shipping method plugin for Woocommerce, which pulls rates from a service called SecureShip. The Secureship Rates API info is here: https://secureship.ca/api/rates.aspx

Currently, I have it set up to load the rates (at least for Canada) when info is input through the built-in WooCommerce shipping calculator.

THE PROBLEM: the rates disappear when one is chosen!

Here is my plugin code:

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

function woo_secureship_init() {
  if ( ! class_exists( 'Woo_SecureShip' ) ) {
    class Woo_SecureShip extends WC_Shipping_Method {
	public function __construct() {
	  $this->id                 = 'heartbeat_secureship'; // Id for your shipping method. Should be uunique.
	  $this->method_title       = __( 'SecureShip' );  // Title shown in admin
          $this->method_description = __( 'No options available. Rates are provided by SecureShip API.' ); // Description shown in admin

	  $this->enabled            = "yes"; // This can be added as an setting but for this example its forced enabled
	  $this->title              = "SecureShip"; // This can be added as an setting but for this example its forced.
					
	  $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' ) );
	}

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

	  if (isset($_POST['calc_shipping'])) {
          $username = '****USERLOGIN IS HERE******';
	  $apikey = '*****APIKEY IS HERE******';
	  $rateurl = 'https://secureship.ca/webship/api/rates';

	  $cityinput = $_POST['calc_shipping_city']; 
          $postalinput = $_POST['calc_shipping_postcode'];
          $countryinput = $_POST['calc_shipping_country'];
          $typeinput = $_POST['address-type'];

          switch ($countryinput) {
            case 'Canada':
              $selectedcountry = "CA";
              break;
             case 'United States (US)':
              $selectedcountry = "US";
              break;
             default:
              $selectedcountry = "CA";
              break;
            }

            packageweight = WC()->cart->cart_contents_weight;

	    $shipinfo = json_encode(array(
	      "ApiKey" => "**********",
	      "CurrencyCode" => "CAD",
	      "AccountNumber" => "*****",
	      "Username" => "*****",
	      "FromAddress" => array(
                 "PostalCode" => "P7A4C7",
                 "City" => "Thunder Bay",
		 "CountryCode" => "CA",
		 "Residential" => "false"
		),
		"ToAddress" => array(
		  "PostalCode" => $postalinput,
		  "City" => $cityinput,
		  "CountryCode" => $selectedcountry,
		  "Residential" => true
		),
		"PackageType" => "MyPackage",
		"Packages" => array(
		  array(
	            "Weight" => $packageweight,
		    "WeightUnits" => "LBS"
		)
	)

	));

	$ch = curl_init($rateurl);
	curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $shipinfo);
	curl_setopt($ch, CURLOPT_HTTPHEADER, array("Authorization: Basic " .
					base64_encode($username . ":" . $apikey)));
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	$output = curl_exec($ch);
	curl_close($ch);
	$fullarray = json_decode($output, TRUE); // parse json string to array
	$showarray = $fullarray['Rates'];

	$ratenum = 0;
	foreach($showarray as $i => $item) {
		$ratenum++;
		$ratearr = 'rate' . $ratenum;

		$ratecost = "$ ".number_format($showarray[$i]['Total'], 2);
		$rateid = $showarray[$i]['ServiceName'];
		$ratearr = array(
			'id' => $rateid,
			'label' => $showarray[$i]['ServiceName'],
			'cost' => $ratecost,
			'calc_tax' => 'per_item'
		);

		$this->add_rate( $ratearr );
    }

    }
				  	
					
}
}
}
}

	add_action( 'woocommerce_shipping_init', 'woo_secureship_init' );

	function add_secureship( $methods ) {
		$methods['heartbeat_secureship'] = 'Woo_SecureShip';
		return $methods;
	}

	add_filter( 'woocommerce_shipping_methods', 'add_secureship' );

	add_filter( 'woocommerce_shipping_calculator_enable_city', '__return_true' );

}

?>

NOTE:
If I don’t use dynamic variables for the city, postal code, etc, the plugin works perfectly. i.e. it works if I change $shipinfo to:

$shipinfo = json_encode(array(
  "ApiKey" => "******",
  "CurrencyCode" => "CAD",
  "AccountNumber" => "******",
  "Username" => "******",
  "FromAddress" => array(
      "PostalCode" => "P7A4C7",
      "City" => "Thunder Bay",
      "CountryCode" => "CA",
      "Residential" => "false"
   ),
   "ToAddress" => array(
      "PostalCode" => "P7A5R9",
      "City" => "Thunder Bay",
      "CountryCode" => "CA",
      "Residential" => true
    ),
    "PackageType" => "MyPackage",
    "Packages" => array(
       array(
	 "Weight" => $packageweight,
	 "WeightUnits" => "LBS"
     )
  )
));

Visit this link to go to the cart page with a product added to it: https://www.heartbeathotsauce.com/cart/?add-to-cart=1199

Try the shipping calculator with Canadian info, as U.S. doesn’t seem to load at the moment. If you need example data, use Canada / Ontario / Thunder Bay / P7A 5R9

Any advice would be appreciated!

• This topic was modified 6 years, 11 months ago by Bethany Fisher.

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