Issue: Embedded VW3 images lost

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September 14, 2017 6:18 PM

Alfa1

Distinguished Member

Embedded VW3 images lost

VW3 had forum attachments. VW4 has a new system and images have mostly migrated. But if VW3 wiki articles had images embedded from another wiki article then the link was not changed during import.
The link to the old Vaultwiki 3 attachment remained. Which means that in the case of XenForo it will redirect to the related thread. As we no longer use Wiki threads, those threads have been deleted. The result is that many wiki images are broken.

Example:
/forum/attachment.php?attachmentid=27767&stc=1&d=1345712635
It works in VW3, but not in VW4.

I can see why this happened. I did not expect that this would concern so many wiki attachments. Can anything be done to save these images?

Issue Details

Issue Number 5222

Issue Type Bug

Project VaultWiki 4.x Series

Category Importing

Status Working as Designed

Priority 1 - Security / Login / Data Loss

Affected Version 4.0.19

Fixed Version (none)

Milestone (none)

Software DependencyXenForo 1.x

License TypePaid

Users able to reproduce bug 0

Users unable to reproduce bug 0

Attachments 0

Assigned Users (none)

Tags (none)

September 16, 2017 10:36 AM
pegasus

VaultWiki Team
If the missing attachment was originally attached directly to a wiki page, then the importer did make a record of this attachment ID and the new wiki attachment that it points to.

Assuming you already have an attachment.php redirect script setup for XenForo, it should be as simple as adding the following to your vault/config.php file:

Code:

define('VW_301_ATTACHMENTS', 1);

What this does is that whenever XenForo_ControllerPublic_Attachment is about to return 404, VaultWiki will first check its import records to make sure that the attachment ID is not related to its 301-permanent-redirect records. Note that 301s are only maintained for 6 months, so you should update these URLs as soon as possible.
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September 16, 2017 11:46 AM

Alfa1

Distinguished Member

I would like to update those URLs but I have no list of malfunctioning or redirected URLs. So how do I find those URLs in 2125 pages?
Is there any way to make those redirects permanent? Or find some way to mass rewrite the URLs in the wiki content?

The config file already has that code. But it does not redirect to the correct vaultwiki file.

Reply
September 16, 2017 11:58 AM
pegasus

VaultWiki Team
With the advent of Mass Search and Replace, you can do something like this:

Make a template "Link Needs Updating" which shows an icon and/or text:

Code:

(this link needs updating)

In Mass Management, search for content in all pages, matching the attachment links:

Code:

\[img\]http://forum\.com/attachment\.php.*\[/img\]

Replace with:

Code:

$0 [template]Link Needs Updating[/template][comment]LinkNeedsUpdating[/comment]

Then, visit the template "Link Needs Updating" and go to View > Pages That Use This Template.
This should be a complete list of all such pages that can be shared with your wiki helpers to get this job done. It will be simple to edit each page and Ctrl+F for the template locations.

Alternatively, you should also be able to do a forum search for "LinkNeedsUpdating" and get the same list of pages.
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Issue: Embedded VW3 images lost

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