Comment moderation on custom post types

Question

I know that I can require all of the comments on my site to be moderated, but is there a way of forcing moderation for a specific custom post type (i.e. my CPT "species") whilst allowing instantaneous comments across the rest of the site?

Thanks in advance,

Answer 1

Yes, this is possible. Comment moderation is an option, and is retrieved like any other option:

get_option('comment_moderation');

the get_option function applies a filter before returning the value...

return apply_filters( 'option_' . $option, maybe_unserialize( $value ) );

So what you'll want to do is add_filter('option_comment_moderation', 'check_moderable_post_types') and in your check_moderable_post_types function, check to see if the current post's post type is species. If so, return 1, and if not return the $value that is passed to the function!

Edit: This should do the trick:

add_filter('option_comment_moderation', 'check_moderable_post_types');
function check_moderable_post_types($value) {
    if (get_post_type() == 'species') return 1;
    return $value;
}

Answer 2

The previous answer doesn't work for me in WordPress 4.9.8. I figured it out with the help of pre_comment_approved hook.

Example:

add_filter('pre_comment_approved', 'misha_moderable_post_types', 10, 2);
function misha_moderable_post_types( $approved, $commendata ) {
    if ( get_post_type( $commendata['comment_post_ID'] ) === 'custom post type name' ){
        return true;
    }
    return $approved;
}