“wpcargo_before_metabox_section” is an action hook that allows to add additional shipment form fields after the “Shipment Information” section in wp-admin
The following sample code will add custom “Shipment Notes” field, copy and paste to the theme functions.php file.
function my_metabox_custom_field( ){
global $post;
// Get Save post metakey "_shipment_notes"
$shipment_notes = get_post_meta( $post->ID, '_shipment_notes', true );
?>
<section class="col-md-6">
<h3 class="section-title wpccf_section_header">Additional Information</h3>
<div id="form-notes" class="form-group ">
<label for="_shipment_notes">Shipment Notes</label>
<textarea id="_shipment_notes" class="md-textarea form-control _shipment_notes" name="_shipment_notes"><?php echo $shipment_notes; ?></textarea>
</div>
</section>
<?php
}
add_action('wpcargo_before_metabox_section', 'my_metabox_custom_field');
Screenshot:
