[TYPO3-bugs] RFC: 3531, Publishing a record breaks dam_ttcontent-relations

[Martin Kutschker]

Andreas Wolf schrieb:
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>> Yes, but a hook is a promise. Once it's there it can neither be removed nor 
>> changed.
> Ok, that's right - so I'll remove it...

Thanx, but the patch for TCEmain is wrong.

Why? It's a special case for tt_content and tx_dam_mm_ref. If it were, 
then the hook is the right solution. But the problem exists for all MM 
relations, or at least double-sided MM ("mmforeign").

If I rad the code/patch correct tt_content.tx_damttcontent_files is the 
foreign part of the MM relation. When I generalize TCA has to do the 
following on a version swap. Check all MM foreign relations of the 
current record and do the switch proposed in the patch.

Something like that (untested):

foreach($TCA[$table]['columns'] as $field) {
  if ($field['config']['MM'] && $field['config']['MM_opposite_field']) {
   $MMtable = $field['config']['MM'];
   $TYPO3_DB->exec_UPDATEquery($MMtable,
     'uid_foreign='.$swapWith, Array('uid_foreign' => -$swapWith));
   $TYPO3_DB->exec_UPDATEquery($MMtable,
    'uid_foreign='.$id, Array('uid_foreign' => $swapWith));
   $TYPO3_DB->exec_UPDATEquery($MMtable,
    'uid_foreign=-'.$swapWith, Array('uid_foreign' => $id));
  }
}

Masi