设置posts_per_page时分页/ page / 2 /的WordPress 404错误

Question

I am fairly new to coding with WordPress. Essentially what my intention was is to set different post per page limits for separate categories.

so I edited the functions.php file on my theme with the following code.

// Set the posts per category.
add_filter('pre_get_posts', 'per_category_basis');
function per_category_basis($query){

    if ($query->is_category) {
        // category named 'books' show 12 posts
        if (is_category('team')){
            $query->set('posts_per_page', 100);
        }

        if (is_category('our-work') || is_category('news')){
            $query->set('posts_per_page', 2);
        }
    }
    return $query;
}

this does work perfectly for displaying the number of posts. The problem is when navigating to page 2 website.com/news/page/2/ I will get a 404 error.

I have already attempted changes to the function.php and searched google for other options. I've changed the settings under reading and still no luck.

Any help would be greatly appreciated. I am aware there is a 7 year old plugin called category pagination fix. but it is out dated and doesn't work with PHP 7.2 and latest version of WordPress.

Answer 1

Ok, so I found out the issue.

The reason why this page was displaying a 404 is because under settings > permalinks i was using the custom structure

/%category%/%postname%/

and had the "category base" set to "." (a fullstop) in term this removed the pages from being /category/news/page/2 to /news/page/2 but also broke the pagination..

The easiest fix i found was simply installing the below plugin. Fixed my issue and made pagination work 100% correctly.

There is also a similar function in Yoast SEO pro which may do similar.

No Category Base (WPML): https://wordpress.org/plugins/no-category-base-wpml/