Wordpress How to give previous and next post link from same taxonomy?

Question

I have post type testimonials.

I am listing that testimonials by specific taxonomy with read more link.

When user click on read more link which is get_permalink( $post ), and redirect to specific page then i want to show previous and next post link with same taxonomy of current post?

If you require any more info then let me know.

I have added true as third element for it, but don't worked

previous_post_link( '%link', '<span class="meta-nav">' . _x( '&larr;', 'Previous post link', 'twentytwelve' ) . '</span> %title' ,true );

Answer 1

Refer this Link

I found solution as below

Go your single.php file

// Only for Testimonial

if(get_post_type( $post )=="wpm-testimonial")
{

    $terms = array_shift(get_the_terms($post->ID, 'wpm-testimonial-category'));


    // get_posts in same custom taxonomy
    $postlist_args = array(
        'posts_per_page'  => -1,
        'orderby'         => 'ID title',
        'order'           => 'ASC',
        'post_type'       => 'wpm-testimonial',
        $terms->taxonomy  => $terms->slug
    );

    $postlist = get_posts( $postlist_args );

    // get ids of posts retrieved from get_posts
    $ids = array();
    foreach ($postlist as $thepost) {
        $ids[] = $thepost->ID;
    }

    // get and echo previous and next post in the same taxonomy
    $thisindex  = array_search($post->ID, $ids);
    $previd     = $ids[$thisindex-1];
    $nextid     = $ids[$thisindex+1];

    ?>
    <nav class="nav-single">
    <?php

        if ( !empty($nextid) ) {

            echo '<span class="nav-previous"><a rel="next" href="' . get_permalink($nextid). '">Previous</a></span>';

        }

        if ( !empty($previd) ) {

    echo '<span class="nav-next"><a rel="prev" href="' . get_permalink($previd). '">Next</a></span>';

        }

    ?>
    </nav><!-- .nav-single -->

    <?php
}else{

    // Your Default Previous/Next Links in single.php file
}
?>