Issue: Invalid argument supplied for foreach()

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September 26, 2017 10:44 AM

Alfa1

Distinguished Member

Invalid argument supplied for foreach()

Code:

ErrorException: Invalid argument supplied for foreach() - vault/core/controller/dm/xf.php:156 
Generated By: Alfa, A moment ago

Stack Trace
#0 /vault/core/controller/dm/xf.php(156): XenForo_Application::handlePhpError(2, 'Invalid argumen...', '/home/...', 156, Array)
#1 /vault/core/controller/ui/redirect/vw.php(347): vw_DM_Controller_XF->set_existing(false)
#2 /vault/core/controller/ui/page/vw.php(711): vw_UI_Redirect_Controller->save()
#3 /vault/core/controller/ui/page/vw.php(76): vw_UI_Page_Controller->post_redirect()
#4 /vault/core/controller/ui/page/xf.php(58): vw_UI_Page_Controller->execute()
#5 /vault/core/controller/ui/stack/vw.php(276): vw_UI_Page_Controller_XF->execute()
#6 /library/vw/XenForo/ControllerPublic/Wiki.php(70): vw_UI_Stack_Controller->execute()
#7 /library/XenForo/FrontController.php(351): vw_XenForo_ControllerPublic_Wiki->actionIndex()
#8 /library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#9 /index.php(13): XenForo_FrontController->run()
#10 {main}

Please see error log 887 on my site for the request state.

Issue Details

Issue Number 5249

Issue Type Bug

Project VaultWiki 4.x Series

Category Synonyms

Status Fixed

Priority 4 - Warnings / Script Errors

Affected Version 4.0.19

Fixed Version 4.0.20

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 27, 2017 4:58 PM

pegasus

VaultWiki Team

Fixed on your site and in the next release. This occurred in the following condition:

1. A Manage Synonyms tab is open, and at least one synonym is listed under the existing synonyms there.
2. One of the existing synonyms is deleted in another browser tab or by another user.
3. The user with the Manage Synonyms tab open saves the tab.
4. Since one of the existing synonyms on the tab no longer exists, this error is thrown.

The correct behavior in this case is for the synonym to be recreated without throwing an error.

In this case, this resulted in the prefix selection not being honored, and no prefix being used when the synonym was recreated.
Additionally I noticed that when creating a new synonym on a page that already has at least one synonym, the prefix selection for the new synonym is not honored. However, it should still be possible to rename the synonym to include the prefix afterwards. This is also fixed.

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Issue: Invalid argument supplied for foreach()

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