pagination on custom post wp_query

Answer 1

There are 3 ways that I would suggest for pagination with a custom post wp_query. Unfortunately to this day there isn't a lot of good information about this out there, or at least what is out there is unclear in some cases. Hopefully this helps!

Note, you also did have the wp_reset_postdata() in the wrong place, but even still more is needed to get it to work correctly.

Option 1 - use max_num_pages variable

<?php
    $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
    $args = array( 
        'posts_per_page' => 1, 
        'paged' => $paged, 
        'post_type' => 'cpt_type'
    );
    $cpt_query = new WP_Query($args);
?>

<?php if ($cpt_query->have_posts()) : while ($cpt_query->have_posts()) : $cpt_query->the_post(); ?>

    //Loop Code Here...

<?php endwhile; endif; ?>

<nav>
    <ul>
        <li><?php previous_posts_link( '&laquo; PREV', $cpt_query->max_num_pages) ?></li> 
        <li><?php next_posts_link( 'NEXT &raquo;', $cpt_query->max_num_pages) ?></li>
    </ul>
</nav>

You'll see above, a slightly different format for previous_posts_link and next_posts_link which now access the max_num_pages variable. Be sure to use your own query variable name when accessing max_num_pages. Notice I use $cpt_query since that is the variable for my query example.

Option 2 - temporarily use the $wp_query variable for your loop query

This is what a lot of folks recommend, but be careful to asign the $wp_query variable to a temp variable and re-assign it or you will run in to all kinds of troubles. Which is why I recommend Option #1. As noted on CSS Tricks, you can do something like this:

<?php 
  $temp = $wp_query; 
  $wp_query = null; 
  $wp_query = new WP_Query(); 
  $wp_query->query('showposts=6&post_type=news'.'&paged='.$paged); 

  while ($wp_query->have_posts()) : $wp_query->the_post(); 
?>

  <!-- LOOP: Usual Post Template Stuff Here-->

<?php endwhile; ?>

<nav>
    <?php previous_posts_link('&laquo; Newer') ?>
    <?php next_posts_link('Older &raquo;') ?>
</nav>

<?php 
  $wp_query = null; 
  $wp_query = $temp;  // Reset
?>

Option 3 - use WP-pagenavi plugin

Just as another option what you can do instead is use the WP-pagenavi plugin, and setup your query as in Option #1. But make one change in the code, remove everything within the element and replace with this function, once you have installed the plugin. So you'll end with:

<nav>
    <?php wp_pagenavi( array( 'query' => $cpt_query ) ); ?>
</nav>

Answer 2

<?php    
add_shortcode('show_all_news', 'show_all_news');
    function show_all_news($atts) {
        $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
        $limit = 4;
        $offset = ( $limit * $paged ) - $limit;
        $atts['pages'] = $paged; 
        $atts['post-type'] = 'your_custom_post_type'; 
        $atts['orderby'] = 'date'; 
        $atts['order'] = 'DESC';
        $atts['offset'] = $offset; 
        $atts['posts_per_page'] = $limit; 
        $atts['caller_get_posts'] = 1; 

        $result = new WP_Query($atts);
        echo '<div class="news-cont">';  
        if($result->have_posts())
        {
            while ($result->have_posts()) : $result->the_post(); 
                echo '<div class="bg-white news-block">'; 
                echo '<em class="date">'. get_the_date().'</em>' ?>

                <h2><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></h2>
                <?php 
                echo "<p>";
                the_excerpt(); 
                echo "</p>";
                echo '</div>';
            endwhile;

            ?>
                <ul class="pagination" style="width:100%;">
                    <li id="previous-posts" style="float:left">
                        <?php previous_posts_link( '<< Vorige Pagina', $result->max_num_pages ); ?>
                    </li>
                    <li id="next-posts" style="float:right">
                        <?php next_posts_link( 'Volgende Pagina >>', $result->max_num_pages ); ?>
                    </li>
                </ul>
            <?php 

        }
        echo '</div>'; 
        wp_reset_query();
    }

Answer 3

I think you put <?php wp_reset_query(); ?> in the wrong place.. shouldn't it be next or after pagination codes?

something like this

<?php endwhile; ?>
<?php else: ?>
<?php wp_reset_query(); ?>

Answer 4

This question was answered very adequately by @Trevor but I needed to implement numbered pagination, and there was a bit more research to do. I hope my code helps others implement numbered pagination.

    <div class="frontpage-posts">
        <?php
        if (get_query_var('paged')) {
          $paged = get_query_var('paged');
        } elseif (get_query_var('page')) {
          $paged = get_query_var('page');
        } else {
          $paged = 1;
        }
        $temp = $wp_query;
        $wp_query = null;
        $wp_query = new WP_Query('posts_per_page=12&paged=' . $paged);
        if ($wp_query->have_posts()) :
          while ($wp_query->have_posts()) : $wp_query->the_post();
            echo the_title();
          endwhile; ?>
          <nav>
            <?php
            the_posts_pagination(array(
              'mid_size'  => 2,
              'prev_text' => __('Back', 'textdomain'),
              'next_text' => __('Onward', 'textdomain'),
            ));
            ?>
          </nav>
        <?php
          $wp_query = null;
          $wp_query = $temp;
          wp_reset_postdata();
        endif;
        ?>
      </div>