How Do I Create a Custom Post Type Filter in WordPress?

When creating custom post types in WordPress, you can easily filter posts by using a custom post type filter. To create a custom post type filter, first add the following line to your theme’s functions.php file:

add_filter(‘post_type_filter’, ‘my_filter’);

Next, create a function to handle the filtering. The following code shows how to create a custom post type filter that filters posts by author.

function my_filter( $posts ) { return $posts->post_type == ‘author'; }

To use the filter, add the following line to your posts filter in your theme’s functions.php file:

my_filter();

Now, whenever you want to filter posts by author, you can use the my_filter function.