How to customize get_the_post_navigation in theme

问题

get_the_post_navigation() function is defined inside wp-includes/link-template.php

How can I override it in my theme?

回答1:

get_the_post_navigation does not utilize any filters so there is no easy way to modify or override all of its output.

While get_the_post_navigation does not apply any filter itself, it does call functions that do apply filter. Specifically get_adjacent_post_link:

return apply_filters( "{$adjacent}_post_link", $output, $format, $link, $post );

Hooking into that filter will allow you to override some, but not all, of the output. get_the_post_navigation also uses _navigation_markup which does not apply any filters. That portion of the output cannot be overridden.

You could request that a filter be added to that function. It would be a simple update and it would enable you to override all of the output.

function _navigation_markup( $links, $class = 'posts-navigation', $screen_reader_text = '' ) {
    if ( empty( $screen_reader_text ) ) {
        $screen_reader_text = __( 'Posts navigation' );
    }

    $template = '
    <nav class="navigation %1$s" role="navigation">
        <h2 class="screen-reader-text">%2$s</h2>
        <div class="nav-links">%3$s</div>
    </nav>';

    //Add this line
    $template = apply_filters('navigation_markup_template', $template);

    return sprintf( $template, sanitize_html_class( $class ), esc_html( $screen_reader_text ), $links );
}

An easier solution might just be to create your own post navigation function, and then replace all references to get_the_post_navigation in your theme with your function.

来源：https://stackoverflow.com/questions/29609280/how-to-customize-get-the-post-navigation-in-theme