Calling From Functions.php

Philipp,

In my functions.php file, I’m attempting to call custom-pos-header.php which contains only one line: <?php echo do_shortcode('[moduleposition id="1"]'); ?>

I keep getting this message: Fatal error: Call to undefined function do_shortcode() in /www/mySite/wp-content/themes/myTheme/inc/custom-pos-header.php on line 1

After Googling for a couple days, I came across numerous suggestions saying to do it through Ajax. Here’s the entry I made in my functions.php file:

// embed the javascript file that makes the AJAX request
wp_enqueue_script( 'load-mobile-header-ajax', get_template_directory_uri() . '/js/ajax.js', array( 'fnd-jquery' ) );
wp_localize_script( 'load-mobile-header-ajax', 'myAjax', array( 'ajaxurl' => admin_url( 'admin-ajax.php' ) ) );
// THE AJAX ADD ACTIONS
add_action( 'wp_ajax_load_mobile_header', 'load_mobile_header' );
add_action( 'wp_ajax_nopriv_load_mobile_header', 'load_mobile_header' ); // need this to serve non logged in users
function load_mobile_header(){
	include('../wp-content/plugins/module-positions/module-positions.php');
	$mobile_header = get_template_directory_uri().'/inc/custom-pos-header.php';
	return $mobile_header;
	die();
}

Here is the entry I’ve added to my ajax.js file:

jQuery.ajax({
  // previous type was "POST"
  type:"GET",
  url: ajaxurl,
  data: {
    action : "load_mobile_header"
  },
  success:function(data){
    window.console.log(data);
  },
  error:function(errorThrown){
    window.console.log(errorThrown);
  }

});

Any ideas on what I’m doing wrong?

https://wordpress.org/plugins/module-positions/