I have a custom post type (CPT) called
event. I have a meta box for the type with several fields. I would like to validate some fields before publishing an event. For example, if an event’s date is not specified I would like to display an informative error message, save the event for future editing, but prevent that event from being published. Is ‘pending’ status for an CPT post without all necessary info the right way to treat it?
What’s the best practice to do CPT fields validation and prevent a post from being published, but save it for future editing.