Extending the shipping method features

Now that all the files are installed, we can add more features to the shipping method. In this recipe, we will add a country configuration and enable tracking codes for the shipping method.

Getting ready

Similar to all recipes in this chapter, we will build further on the module that we created in the previous recipes of this chapter. Ensure that you have the right files installed.

How to do it...

In the following steps, you will learn how we can enable tracking codes and country configurations for the shipping method:

1. Open the shipping adapter file, app/code/Packt/Shipme/Model/Carrier/Shipme.php.

2. Add the following function to that class to enable tracking codes:

   public function isTrackingAvailable() {
     return true;
   }

3. Next, we will enable the country-specific options. In the app/code/Packt/Shipme/etc/adminhtml/system.xml file, add the following content:

   <field id="sallowspecific" translate="label" type="select" sortOrder="100" showInDefault="1" showInWebsite...