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The problem

I was just messing around with a custom post type loop,  and noticed that pagination wasn’t showing up at all. Neither posts_nav_link() nor the WP-PageNavi plugin was working and showing up navigation links.

I was basically using a custom WP_Query like this:

$custom_query = new WP_Query( $args );
while ($custom_query->have_posts()) :
...

The solution

global $wp_query;
$clone_page_total = $wp_query->max_num_pages;
$wp_query->max_num_pages = $custom_query->max_num_pages;

wp_pagenavi();

$wp_query->max_num_pages = $clone_page_total;

Just make sure to put your pagination function call (wp_pagenavi() in this case) before we restore the $wp_query property to it’s original value (in line 7).

What does it do?

The problem is that WordPress pagination functions need the $wp_query object. They don’t care for a custom $custom_query object. We basically just pretend there is a $wp_query object by cloning the needed property max_num_pages to $wp_query.

Requirements

• WordPress 3.0 (if you use custom post types)