Last week I published two articles using custom loops. The first was about how to create a custom loop. The second was how to retrieve posts based on custom fields. In both articles, several readers commented that they would like to see paging and have it explained. I’d like to thank Aaron Harun from Anthology of Ideas for supplying the code used in this post. Paging, and why it doesn’t work with WP_Query The paging magic happens in a file called ‘link-template.php‘ in the ‘wp-includes‘ folder. Most themes have basic paging built in, with the help of two functions: next_posts_link and previous_posts_link. These functions, as well as several others, make use of a global variable called $wp_query. This variable is actually an instance of the WP_Query object. However, when we create our own instantiation of WP_Query, we don’t have this global variable $wp_query, which is why paging will not work. […]