Question 380322 in Wordpress Question posted in
The official Wordpress documentation can be found here.

Add and show errors saving a post WordPress

For my CPT I use some extra meta data.
I want verify the meta data and if there is something wrong show an error.

With some research I try this code

add_action('save_post', function($post_id){
    if(isset($_POST['joLink'])){
        if($_POST['joLink'] !== ''){
            update_post_meta($post_id, 'joLink', $_POST['joLink']);
        }else{
            add_settings_error(
                'missing-link',         
                'missing-link',         
                'Link may not empty!',          
                'error' 
            );
            add_action('admin_notices', function(){
                $message = '<div id="message" class="error"><p><ul>';         
                foreach ( $errors as $error ) {         
                    $message .= '<li>' . $error['message'] . '</li>';         
                }         
                $message .= '</ul></p></div>';      
                echo $message;
            });
        }
    }else{
        delete_post_meta($post_id, 'joLink');
    }
    
    return $post_id;
});

If I save the post with a empty link WordPress saved the data and returns success.
What I am missing?

Tags:

2

Answers


  1. 0

    One way to cancel the post save is just die.

    
add_action('save_post', function ($post_id) {
    if (true) {
        wp_die(__('Link may not empty!', 'your-text-domain'));
    }
    return $post_id;
});
    Login or Signup to reply.
  2. 0

    The Gutenberg block editor use Javascript to display messages

     wp.data.dispatch( 'core/notices' ).createNotice(
        'error',
        'Hey, something going wrong!',
        { 
            id:'greetings-notice', 
            isDismissible: true,
        }
    );
    Login or Signup to reply.
Please signup or login to give your own answer.

Back To Top
Search