Page Not Found – Multisite – Randomness

  • Resolved Jarod Thornton

    (@jarmerson)


    9 years, 3 months ago

    Hi,

    I’ve had a problem with permalinks and cannot for the life of me find a solution. It happens at random and seemingly without provocation.

    What happens is I wake up one random day and a client reports Page Not Found issues on their site. So I pull up their blog and sure enough blog posts are not found.

    I check another client blog and it’s the same issue. I have to then go in one-by-one and fix. However, all it takes is logging into the admin area and visiting the permalinks page – it suddenly works without any action except visiting the permalink settings page in admin.

    I did try to see if updating a plugin would do the trick. So I tried one custom plugin and it didn’t use the WordPress’ $wp_rewrite global. So I tried a more well known plugin, Yoast SEO – that did the trick site-wide.

    The problem persists at random. While that did flush the cache or however it works, the problem returns at random.

    I’ve searched and searched for a few weeks without luck of finding a solution or if I found something I didn’t know if it would work and simply don’t have the experience to implement i.e. WordPress’ $wp_rewrite global – I also attempted to update .htaccess and that didn’t work.

    I would greatly appreciate insight as this is costly for both SEO and traffic.

    Thank you

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  • Thread Starter Jarod Thornton

    (@jarmerson)

    I believe I found the culprit in a custom plugin I’ve been working on. It’s been very stable, but a few lines that were added and never checked up on appear to have caused my rewrite flush issues.

    Here’s the code…

    // Remove Category Base //
// Refresh rules on activation/deactivation/category changes
register_activation_hook(__FILE__, 'no_category_base_refresh_rules');
add_action('created_category', 'no_category_base_refresh_rules');
add_action('edited_category', 'no_category_base_refresh_rules');
add_action('delete_category', 'no_category_base_refresh_rules');
function no_category_base_refresh_rules() {
	global $wp_rewrite;
	$wp_rewrite -> flush_rules();
}

register_deactivation_hook(__FILE__, 'no_category_base_deactivate');
function no_category_base_deactivate() {
	remove_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');
	// We don't want to insert our custom rules again
	no_category_base_refresh_rules();
}

// Remove category base
add_action('init', 'no_category_base_permastruct');
function no_category_base_permastruct() {
	global $wp_rewrite, $wp_version;
	if (version_compare($wp_version, '3.4', '<')) {
		// For pre-3.4 support
		$wp_rewrite -> extra_permastructs['category'][0] = '%category%';
	} else {
		$wp_rewrite -> extra_permastructs['category']['struct'] = '%category%';
	}
}

// Add our custom category rewrite rules
add_filter('category_rewrite_rules', 'no_category_base_rewrite_rules');
function no_category_base_rewrite_rules($category_rewrite) {
	//var_dump($category_rewrite); // For Debugging

	$category_rewrite = array();
	$categories = get_categories(array('hide_empty' => false));
	foreach ($categories as $category) {
		$category_nicename = $category -> slug;
		if ($category -> parent == $category -> cat_ID)// recursive recursion
			$category -> parent = 0;
		elseif ($category -> parent != 0)
			$category_nicename = get_category_parents($category -> parent, false, '/', true) . $category_nicename;
		$category_rewrite['(' . $category_nicename . ')/(?:feed/)?(feed|rdf|rss|rss2|atom)/?$'] = 'index.php?category_name=$matches[1]&feed=$matches[2]';
		$category_rewrite['(' . $category_nicename . ')/page/?([0-9]{1,})/?$'] = 'index.php?category_name=$matches[1]&paged=$matches[2]';
		$category_rewrite['(' . $category_nicename . ')/?$'] = 'index.php?category_name=$matches[1]';
	}
	// Redirect support from Old Category Base
	global $wp_rewrite;
	$old_category_base = get_option('category_base') ? get_option('category_base') : 'category';
	$old_category_base = trim($old_category_base, '/');
	$category_rewrite[$old_category_base . '/(.*)$'] = 'index.php?category_redirect=$matches[1]';

	//var_dump($category_rewrite); // For Debugging
	return $category_rewrite;
}

    I have no use for it so I don’t even care what and why it doesn’t work. ??

Viewing 1 replies (of 1 total)
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