Issue: Redirect and category blow up article

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July 15, 2009 4:24 PM

tommythejoat

Regular Member

Redirect and category blow up article

An article that is the target of a redirect generates a duplicate post error message

We have an article called Swiss Fake that also has a redirect article called Swiss Fakes. When the categoy European Watches is added to the article Swiss Fake, it creates an error loop.

Every time one tries to view the target article directly by clicking on its name, you get a duplicate post error. If you click on the article with the redirect in it, you see the target article just fine.

When the error message is displayed, a new identical entry is created in the Category namespace called European Watches. This new category has no entries. There is already a populated category European Watches and the author is trying to add the Swiss Fake article to that category.

a few evenings ago this was generating so many false entries that I did a series of database edits to remove the trash entries from vault_category and edited the post to remove the category tag. That made the behavior go away, but putting the category tag back in makes the error recur.

Swiss Fake via redirect

This may not actually get you there because the behavior continually deteriorates over time with each new access.

Issue Details

Issue Number 677

Issue Type Bug

Project VaultWiki 3.x Series

Category Redirects

Status Fixed

Priority 3 - Loss of Functionality

Affected Version 2.3.2

Fixed Version 2.5.0

Milestone VaultWiki 2.5.x

Software DependencyAny

Users able to reproduce bug 0

Users unable to reproduce bug 0

Attachments 0

Assigned Users (none)

Tags (none)

July 15, 2009 4:53 PM
pegasus

VaultWiki Team
For now, all I can recommend is removing a few lines that won't be present anyway in VaultWiki Categories 2. It will make some of your Special pages data inaccurate, but will prevent this from continuing to occur. In AdminCP -> Plugins & Products -> Plugin Manager -> CES VaultWiki Categories -> vault_bbcode_link, find and remove:

Code:

if (!$linkid AND !$vbulletin->GPC['preview']) { global $vbphrase; // generate a new article in the Category namespace require_once(DIR . '/vault/special_plugins_newpost.php'); $linkid = special_article_creator( $option, array('phrase' => 'ces_category_default_message'), $vault->namespacecache["$nsid"]['forumid'], array( 'userid' => $post['userid'], 'username' => $post['username'] ) ); }

In vault/extensions/category/category_functions_ext.php, find and remove:

Code:

$category['class'] = 'new';

It's okay to do this, because the index should still be generated under the "There is no text in this page" message.
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July 15, 2009 6:17 PM

tommythejoat

Regular Member

I found the original cause of this problem with the category. The original form of the category had two spaces between two of the words. This was essentially invisible and I finally spotted it by looking at the url and noticing two successive spaces.

The software apparently is ignoring the whitespace in some functions and not in others.

I think it should probably not be possible to create a category name with two spaces, extra tabs, etc. All whitespace should be reduced to a single space in a category title. Leading and trailing whitespace should be removed.

Just to be clear, this would apply to all category links as well.

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July 15, 2009 8:49 PM

pegasus

VaultWiki Team

Yes, this is an issue with how HTML handles whitespace vs. how vBulletin's parser handles whitespace.

The whitespace issue (for links anyway) will be obsolete in 3.x, because it would reduce to the same URL. VaultWiki no longer finds articles based on title, but instead on the processed URL. This prevents situations like having two articles called "Stop & Go" and "Stop and Go", both would go to the same article without needing the redirect. It also makes sure things like "Stop           and Go" and "Stop & Go" go to the same place.

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Issue: Redirect and category blow up article

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