Add a custom shortcode to be available in email templates when using WP Job Manager Emails

functions.php

<?php

// This example below will add the "my_shortcode" shortcode for usage in all email templates
// You MUST make sure that you use a unique shortcode that does not match ANY of the meta keys of fields!!

// Passed arguments are same as when adding a shortcode like normal (using add_shortcode)

// Called from wp-content/plugins/wp-job-manager-emails/includes/class-shortcodes.php around line #648

add_filter( 'job_manager_emails_default_core_shortcodes', 'smyles_add_custom_default_shortcode_wpjm_emails', 9999 );

function smyles_add_custom_default_shortcode_wpjm_emails( $shortcodes ){

	$shortcodes['my_shortcode'] = array(
		'label'       => __( 'My Shortcode' ),
		'description' => __( 'This is my custom shortcode available on all email templates' ),
		'callback'     => 'my_shortcode_function', // <-- this should be a function to call that will return the data to replace the shortcode with
		// 'callback'     => array( $this, 'class_function' ), // You can also specify as an array to call class function
		'nonmeta'     => true
	);

	return $shortcodes;
}

If in your shortcode you need the ID of one of the listings, you can use the available handling below:

Job Listing ID:
wp_job_manager_emails()->tmp_job_id

Job Alert ID:
wp_job_manager_emails()->tmp_alert_id

Resume ID:
wp_job_manager_emails()->tmp_resume_id

Application ID:
wp_job_manager_emails()->tmp_app_id

These are all temporary variables that the IDs are set in during the shortcode processing and handling.

There is also filters specifically for
job shortcodes: job_manager_emails_job_shortcodes
resume: job_manager_emails_resume_shortcodes
private messages: job_manager_emails_privatemessages_shortcodes
application: job_manager_emails_application_shortcodes

Hey Myles,

Jason here from Project Pi. FYI, I got this working but I had to change line #17 to the following:
'callback' => 'my_shortcode_function',

@projectpi-ca thanks I updated the code, this was an old example from v1 where in v2 the arg was changed to callback as you specified