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Opened 15 years ago

Closed 15 years ago

#9379 closed defect (bug) (duplicate)

Custom permalinks causes error when clicking Older Entries

Reported by: jsherk's profile jsherk Owned by: ryan's profile ryan
Milestone: Priority: normal
Severity: minor Version: 2.7.1
Component: Permalinks Keywords:
Focuses: Cc:


Using the default wordpress theme in 2.7.1, installed in .

Create a category (let's call it 'stuff'), and then add posts to that category (let's add 4 for now), and then set Reading-> Blog Pages Show At Most 3 Posts so that there will be more than one page.

Now set Permalinks to Custom: /%category%/%post_id%
so that they will show by Category name and post-id.

Now go to the category page

You should see your first three posts, and Older Entries should also be highlighted. If you hover over Older Entries it will say

But if you click on it, you will get either a "Sorry, nothing there" error, or a 404 error.

A possible solution is here:

Change History (3)

#1 @jsherk
15 years ago

The barefootdevelopment solution did not work, but I was able to modify it and work around the problem:

When viewing pages from categories [permalink= /%category%/%post_id% and lets assume the category name is 'stuff' and I want to go to page 2], then $query_string is passed 'category_name'='stuff/page' and it is also passed 'p'='2'.

I had to remove the '/page' from the end of 'category_name', and I had to set 'paged'='2' and had to unset 'p'. Here is the workaround code plugin:

Plugin Name: Fix Paging in Category Listings
Plugin URI:
Description: Fixes a bug where next/previous page links are broken in category listings
Version: 0.6
Author: Doug Smith (modified by Jeff Sherk)
Author URI:

Modified on March 23, 2009 by Jeff Sherk for WordPress 2.7.1

Based on original plugin info listed below:
Plugin Name: Fix Paging in Category Listings
Plugin URI:
Description: Fixes a bug where next/previous links are broken in category by year/month listings
Version: 0.5
Author: Doug Smith
Author URI:

Copyright 2007 Doug Smith (email: dsmith@…)

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.



  • Function to fix problem where next/previous buttons are broken on list
  • of posts in a category when the custom permalink string is:
  • /%category%/%year%/%monthnum%/%postname%/
  • The problem is that with a url like this:
  • /category/2007/10/page/2
  • the 'page' looks like a post name, not the keyword "page"
  • MODIFIED ON March 23, 2009 by Jeff Sherk
  • Permalink structure was /%category%/%post_id% which looked like
  • When attempting to go to another page, it looked like this
  • but would generate a 404 error .
  • This modification takes $query_stringcategory_name? and chops the '/page'
  • off the end. It also takes $query_stringpaged? and sets it equal to
  • $query_stringp?, and then unsets $query_stringp?.
  • 'p' is not needed, but 'paged' is needed in order to make it work correctly */

function fix_page_in_category_from_query_string($query_string) {

Check to see if the 'p' and 'category_name' are set in $query_string
if ( isset($query_stringcategory_name?) && isset($query_stringp?) ) {

$category_name = $query_stringcategory_name?;
$category_len = strlen($category_name);

Check to see if the 'category_name' has '/page' on the end of it
if (substr($category_name, $category_len-5,5) == '/page') {

Remove '/page' from the end of 'category_name'
$query_stringcategory_name? = substr($query_stringcategory_name?,0,$category_len-5);

Set 'paged' equal to the page you want to go to
$query_stringpaged? = $query_stringp?;

Unset 'p' since we don't need it anymore because we set 'paged' instead


return $query_string;


add_filter('request', 'fix_page_in_category_from_query_string');


#2 @Denis-de-Bernardy
15 years ago

  • Component changed from General to Permalinks
  • Milestone changed from Unassigned to Future Release
  • Owner changed from anonymous to ryan
  • Priority changed from high to normal
  • Severity changed from major to minor

it's not recommended to use permalink structures that start with category or postname

#3 @Denis-de-Bernardy
15 years ago

  • Milestone Future Release deleted
  • Resolution set to duplicate
  • Status changed from new to closed

See #8905

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