LifterLMS Custom Merge Codes for Certificates

llms-certificate-custom-merge-codes.php

<?php // Do not copy this line 

// Copy from under this line and paste into your child theme's functions.php

add_filter( 'llms_certificate_merge_codes', 'llms_custom_certificate_prefix_suffix_merge_codes', 10, 2 );

function llms_custom_certificate_title_merge_code( $merge_codes_array, $certificate_object ){
	
	// add custom certificate title merge code to existing ones. See https://github.com/gocodebox/lifterlms/blob/a1a6833c6e6bab57bf4356739463220e51f89408/includes/certificates/class.llms.certificate.user.php#L132
	$merge_codes_array['{merge-code-1}'] = get_user_meta( $certificate_object->user_id, 'custom_field_key_1', true );
  
  	// repeat for each merge code.
  	$merge_codes_array['{merge-code-2}'] = get_user_meta( $certificate_object->user_id, 'custom_field_key_2', true );
	
	// return new merge code list
	return $merge_codes_array;
}

add_filter( 'llms_merge_codes_for_button', 'llms_custom_certificate_prefix_suffix_merge_codes_for_button', 10, 2 );

function llms_custom_certificate_title_merge_code_for_button( $codes, $screen ){

	// don't run on emails
	if( $screen->post_type != 'llms_certificate' ){
		return;
	}
	
  	// the merge code and the text displayed on the button.
	$codes['{merge-code-1}'] = "Merge Code 1";
  
  	// repeat for each merge code.
  	$codes['{merge-code-2}'] = "Merge Code 2";
	
	return $codes;
}