Hi all,
I’ve been trawling the forums trying to find a solution for this.
We have an ACF field group called Additional Course Data group_5edb89be3792c which contains several fields including course_code.
This is assigned to Learndash Courses post type.
Each course requires a course_code which must be unique.
I’m trying to create a function that will reside in my child theme functions.php – that checks to see if the code is unique whenever a user clones or creates a new course and then checks the course_code is unique when they try to publish, and if it’s not unique, then display a warning “Course Code must be unique” so that the course_code is edited before publishing.
I’m not the greatest PHP developer in the world, so I’ve tried using codewp.ai to give me the basics, but I just can’t get it to work.
Any pointers would be greatly appreciated.I’ve been trawling the forums trying to find a solution for this.
This is where I’m at, but can’t get this to work
// Check that course code is unique
function cwpai_check_course_code_unique() {
global $post;
if (get_post_type($post) == 'sfwd-courses') {
$course_code = get_field('course_code', $post->ID);
$args = array(
'post_type' => 'sfwd-courses',
'post_status' => 'publish',
'meta_query' => array(
array(
'key' => 'course_code',
'value' => $course_code,
'compare' => '='
)
)
);
$query = new WP_Query($args);
if ($query->have_posts()) {
$query->the_post();
if ($post->ID != $post->ID) {
$url = admin_url('post.php?post=' . $post->ID . '&action=edit');
$message = sprintf(__('The course code %s is already in use by %s. Please choose a unique course code.', 'cwpai'), $course_code, '<a href="' . $url . '">' . get_the_title() . '</a>');
?>
<div class="error">
<p><?php echo $message; ?></p>
</div>
<?php
}
}
}
}
add_action('admin_notices', 'cwpai_check_course_code_unique');
