TYPO3 Core

We seem to have the same issue without using workspaces. In one of our projects with TYPO3 v12.4.11 we get an error in the page tree filter whenever we try to add a new page using the data handler:

PHP Warning: Undefined array key "NEW65e584cf06bad935695744" in /home/www/xxx/vendor/typo3/cms-frontend/Classes/Hooks/TreelistCacheUpdateHooks.php line 81

More information regarding this error might be available online.

Following patch would solve it:

```
Index: Classes/Hooks/TreelistCacheUpdateHooks.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8 ===================================================================
diff --git a/Classes/Hooks/TreelistCacheUpdateHooks.php b/Classes/Hooks/TreelistCacheUpdateHooks.php
--- a/Classes/Hooks/TreelistCacheUpdateHooks.php
++ b/Classes/Hooks/TreelistCacheUpdateHooks.php (date 1709543377998)
@ -78,7 +78,7 @
if ($status === 'new') {
// Detect new pages
// Resolve the uid
- $affectedPageUid = $dataHandler->substNEWwithIDs[$recordId];
$affectedPageUid = $dataHandler->substNEWwithIDs[$recordId] ?? 0;
$affectedPagePid = $updatedFields['pid'];
} elseif ($status === 'update') {
// Detect updated pages
```

Lina Wolf wrote in #note-2:

We seem to have the same issue without using workspaces. In one of our projects with TYPO3 v12.4.11 we get an error in the page tree filter whenever we try to add a new page using the data handler:

PHP Warning: Undefined array key "NEW65e584cf06bad935695744" in /home/www/xxx/vendor/typo3/cms-frontend/Classes/Hooks/TreelistCacheUpdateHooks.php line 81

Hey Lina,

these are two different issues, right? I cannot reproduce your issue.

Hi Ben,

I can also confirm the issue of Lina reported. When I tried to copy a page and paste, this issue happened. I tried with TYPO3 v12.4.13. Note: I was trying to upgrade a system from 10.4 to 12.4.

Thank you,
Arun

Hi Michael,

this helped immensely! Thanks!

Information for others encountering this issue:

We had the pages extended with a select field. Our problem was, that the field had NOT defined a "default" and the database was set to INT NOT NULL. But even tho the documentation states that "Default value set if a new record is created. If empty, the first element in the items array is selected." this does not seem to be the case for a "foreign_table" select.

Without setting the "default" to 0 inside the TCA the DataHandler gets the following SQL error: "Incorrect integer value: '' for column `mydatabase`.`pages`.`myfield` at row 1" in the insertDB method. This however does not get logged. Instead we only get "PHP Warning: Undefined array key "NEW662621357cbff613450439" in /app/vendor/typo3/cms-frontend/Classes/Hooks/TreelistCacheUpdateHooks.php line 81" in the log.

After setting the default to 0 everything works fine.

Cheers,
Tim

Patch set 1 for branch 12.4 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/c/Packages/TYPO3.CMS/+/84292