Description

The post_type_link filter lets you adjust the permalink for posts of a custom post type. By using this hook, you can append or modify the URL of your posts to better suit your needs.

Parameters

• $post_link: (string) The post’s permalink.
• $post: (WP_Post) The post in question.
• $leavename: (bool) Whether to keep the post name.
• $sample: (bool) Is it a sample permalink.

Live Examples

Example 1: Basic Usage of post_type_link Filter

To run the hook, you can use the following code snippet. This example demonstrates how to apply the filter.

    $post_link = apply_filters( 'post_type_link', $post_link, $post, $leavename, $sample );

    if ( !empty( $post_link ) ) {
        // everything has led up to this point...
    }
    

Example 2: Adding a Hook Callback

In this example, we’re defining a callback function to modify the post link.

    // define the post_type_link callback
    function weplugins_filter_post_type_link( $post_link, $post, $leavename, $sample ) {
        // make filter magic happen here...
        return $post_link;
    };

    // add the filter
    add_filter( 'post_type_link', 'weplugins_filter_post_type_link', 10, 4 );
    

Example 3: Appending a Query String to a Custom Post Type URL

This example shows how to append a query string to URLs of a specific custom post type.

    function weplugins_append_query_string( $url, $post ) {
        if ( 'my_custom_post_type' == get_post_type( $post ) ) {
            return add_query_arg( $_GET, $url );
        }
        return $url;
    }
    add_filter( 'post_type_link', 'weplugins_append_query_string', 10, 2 );