Wordpress next_post_link/previous_post_link not staying in same category

9
votes

Here's my setup.

single.php

<?php

    if ( in_category( 'my-category' ) ) {
        include( TEMPLATEPATH.'/single-my-category.php' );
    }
    else {
        include( TEMPLATEPATH.'/single-generic.php' );
    }
?>

single-my-category.php

<?php

if ( have_posts() ) : while (have_posts()) : the_post(); ?>

<?php echo the_title(); ?>

<div class="pagination">
    <div class="container">
        <div class="row">
            <div class="next col-xs-6 col-sm-6 col-md-6 col-lg-6">
                <?php next_post_link( '%link', '<img src="' . get_template_directory_uri() . '/img/cs-left.png" /> PREVIOUS', true ); ?>
            </div>

            <div class="previous col-xs-6 col-sm-6 col-md-6 col-lg-6">
                <?php previous_post_link( '%link', 'NEXT <img src="' . get_template_directory_uri() . '/img/cs-right.png" />', true ); ?>
            </div>
        </div>
    </div>
</div>

<?php endwhile; endif; ?>

This is what i have followed - http://codex.wordpress.org/Function_Reference/next_post_link

I'm not quite sure what I'm doing wrong here as for some reason the previous_post_link is taking me to a post in a different category even though in_same_term parameter of the function is set to true.

Any ideas?

Thanks.

4
phpwordpress
This happens because you have multiple categories on your post and wp just goes to what ever is the first in the post (guess). Check this link here. Also this answer could be helpful. - dingo_d
The post is only assigned to 1 category - Andrew Matthew
you may try the pagination link underneath of loop - StreetCoder
Are you sure that this post is assigned to only 1 category? Is it possible that it is still assigned to Uncategorized? It's a category too, and it has the lowest ID in the database. - dev_masta
Also, I hope you are not using a cache plugin. - dev_masta

4 Answers

2
votes

Edit your code blocks as following. You haven't put '.php' on the 5th line of your single.php file. Previous/Next post will be shown only for the posts of category which you specify inside if statement of single.php ( here category 'php' ). For the following example, I've created a directory 'template-parts' and created two php file ("single-my-category.php" and "single-generic.php")inside that directory.

single.php

<?php
    $the_query = new WP_Query( $post );

    if (in_category('php')) {
        include( 'template-parts/single-my-category.php' );
    } else {
        include( 'template-parts/single-generic.php' );
    }
?>

single-my-category.php

if ( have_posts() ) : while (have_posts() ) : the_post(); ?>

<?php the_title(); ?>

<div class="pagination">
    <div class="container">
        <div class="row">
            <div class="next col-xs-6 col-sm-6 col-md-6 col-lg-6">
                <?php next_post_link( '%link', '<img src="' . get_template_directory_uri() . '/img/cs-left.png" /> PREVIOUS', true ); ?>
            </div>

            <div class="previous col-xs-6 col-sm-6 col-md-6 col-lg-6">
                <?php previous_post_link( '%link', 'NEXT <img src="' . get_template_directory_uri() . '/img/cs-right.png" />', true ); ?>
            </div>
        </div>
    </div>
</div>

<?php endwhile; endif; ?>
1
votes

Also specify the category name in single page .. since single-categoryname.php is not correct you should try using taxonomy-taxonomy_name.php OR

<?php query_posts('category_name=CATEGORYNAME&showposts=5');
while (have_posts()) : the_post();
  // do whatever you want
?>
<?php endwhile;?>
<div class="pagination">
<div class="container">
    <div class="row">
        <div class="next col-xs-6 col-sm-6 col-md-6 col-lg-6">
            <?php next_post_link( '%link', '<img src="' . get_template_directory_uri() . '/img/cs-left.png" /> PREVIOUS', true ); ?>
        </div>

        <div class="previous col-xs-6 col-sm-6 col-md-6 col-lg-6">
            <?php previous_post_link( '%link', 'NEXT <img src="' . get_template_directory_uri() . '/img/cs-right.png" />', true ); ?>
        </div>
    </div>
</div>

-1
votes

If in_same_term is not working for you, It might your query object is not holding up the post data.

Give it a try - 

global $the_query;
$the_query = new WP_Query( $post );

global $the_query;
if ( $the_query->have_posts() ) : while ($the_query->have_posts() ) : the_post(); ?>

<?php the_title(); ?>

<div class="pagination">
    <div class="container">
        <div class="row">
            <div class="next col-xs-6 col-sm-6 col-md-6 col-lg-6">
                <?php next_post_link( '%link', '<img src="' . get_template_directory_uri() . '/img/cs-left.png" /> PREVIOUS', true ); ?>
            </div>

            <div class="previous col-xs-6 col-sm-6 col-md-6 col-lg-6">
                <?php previous_post_link( '%link', 'NEXT <img src="' . get_template_directory_uri() . '/img/cs-right.png" />', true ); ?>
            </div>
        </div>
    </div>
</div>

<?php endwhile; endif; ?>
-2
votes

Can you plz add this code in your template file.

<ul class="pager">
  <?php if ( get_previous_post() != null ) : ?>
    <li class="previous">
      <span class="nav-previous">
        <?php 
          $singular_nav_previous_text = apply_filters( 'tc_singular_nav_previous_text', _x( '&larr;' , 'Previous post link' , 'customizr' ) );
          previous_post_link( '%link' , '<span class="meta-nav">' . $singular_nav_previous_text . '</span> %title' ); 
        ?>
      </span>
    </li>
  <?php endif; ?>
  <?php if ( get_next_post() != null ) : ?>
    <li class="next">
      <span class="nav-next">
        <?php
          $singular_nav_next_text = apply_filters( 'tc_singular_nav_next_text', _x( '&rarr;' , 'Next post link' , 'customizr' ) );
          next_post_link( '%link' , '%title <span class="meta-nav">' . $singular_nav_next_text . '</span>' ); 
          ?>
      </span>
    </li>
  <?php endif; ?>
</ul>

Now add below code in function.php

add_filter('tc_previous_single_post_link_args', 'navigate_in_same_taxonomy');
add_filter('tc_next_single_post_link_args', 'navigate_in_same_taxonomy');
function navigate_in_same_taxonomy( $args ){
  $args['in_same_term'] = true;
  return $args;
}

if you need more option on Next/Prev link check this link