Restrict guest to view only blog posts

Restrict guest to view only blog posts, instead of all public posts.

1. Add 'blog' tag to all blog posts.

2. Add pre_get_posts action to restrict the query.

function show_only_blog( $query ) {
    if ( is_user_logged_in() ) return;
	
    $tax_query = array(
        array(
            'taxonomy' => 'post_tag',
            'field'    => 'slug',
            'terms'    => 'blog',
        ),
    );
    $query->set( 'tax_query', $tax_query );
}

add_action( 'pre_get_posts', 'show_only_blog' );

Author: IT Team