Have I made a mistake with my WordPress pagination? - php

Question

The pagination on a site I am working on is not working; I really can't work out why as it is the same as the other templates within the site. I am wondering if there is a problem with the loop, perhaps where I have specified what category I want it to pull.
This is the page I am having trouble with:
<div class="container content newspage">
<div class="two_third newsarticles">
<?php /* Start the Loop */ ?>
<?php $catquery = new WP_Query( 'cat=388' ); while($catquery->have_posts()) : $catquery->the_post(); ?>
<?php get_template_part( 'content-archive', get_post_format() ); ?>
<?php endwhile; ?>
<nav id="nav-below">
<div class="nav-previous">
<?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'anariel' ) ); ?>
</div>
<div class="nav-next">
<?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→ </span>', 'anariel' ) ); ?>
</div>
</nav>
<!-- end nav-below -->
</div>
<!-- end two_third -->
<div class="sidebar">
<?php if ( !function_exists('dynamic_sidebar') || !dynamic_sidebar('Default Sidebar') ) : ?>
<?php endif; ?>
</div>
</div>
<!-- end container -->
<?php get_footer(); ?>
The template that does work correctly is here:
<div class="container content newspage">
<div class="two_third newsarticles">
<?php /* Start the Loop */ ?>
<?php while ( have_posts() ) : the_post(); ?>
<?php get_template_part( 'content', get_post_format() ); ?>
<?php endwhile; ?>
<?php /* Display navigation to next/previous pages when applicable */ ?>
<?php if ( $wp_query->max_num_pages > 1 ) : ?>
<nav id="nav-below">
<div class="nav-previous">
<?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'anariel' ) ); ?>
</div>
<div class="nav-next">
<?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→ </span>', 'anariel' ) ); ?>
</div>
</nav>
<!-- end nav-below -->
<?php endif; ?>
</div>
<!-- end two_third -->
<aside>
<div class="one_third lastcolumn newssidebar">
<?php get_sidebar(); ?>
</div>
</aside>
</div>
<!-- end container -->
<?php get_footer(); ?>
I have tried copying this over into the template that doesn't work without success.

Answer 1

When you're using a custom query, you have to add the page number to your arguments.
<?php /* Start the Loop */ ?>
<?php
$paged = get_query_var('paged') ? get_query_var('paged') : 1;
$catquery = new WP_Query( array('cat' => 388, 'paged' => $paged) ); while($catquery->have_posts()) : $catquery->the_post(); ?>
You should also pass the number of pages to get_next_posts_link
next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'anariel' ), $catquery->max_num_pages );