It’s a bit of a hack, but you could create a new member in your $plugin_admin_listings class that’s an array of post IDs published in this page cycle in your transition_post_status add the IDs to that array in save_meta_data as you save each post check if its ID is in the published_posts array and then … Read more
I think it’s a bit tricky but using https://developer.wordpress.org/reference/hooks/plugin_loaded/ to know if the plugin has just been activated. I think check if a plugin is added to get_option(‘active_plugins’); And doing your stuff when you detect something new
How to do admin ajax request in a plugin for rest api
Prevent other hooks from firing after wp_update_post() outside of editor
There’s a great article on Sitepoint that describes how to handle POST forms in WordPress: https://www.sitepoint.com/handling-post-requests-the-wordpress-way/
Hook from plugin doesn’t fire up from external PHP script
How to use wp_enqueue_script properly?
Replace Data In Post & Update Meta Field Post Is Saved
Displaying page content from plugin, inside exising empty WP page
admin-ajax.php calls fail if referrer is sent with 500