[TYPO3-dev] TCEmain hook for postprocessing data fails updating select fields

[Thomas "Thasmo" Deinhamer]

Ah, sorry - to clear this up:

They way I do this for a news article is to use a new instance of the 
TCEmain class:

$engine = t3lib_div::makeInstance('t3lib_TCEmain');
$engine->stripslashes_values = 0;
$engine->start($map, array());
$engine->process_datamap();

This way it cares about the MM relation etc. and does everything on it's 
own, without manually setting any relations at all.

If I use the hook, and change/set the category field it seems, TCEmain 
won't process this further and wants to store the given, plain value.

Is there any functionality or solution to avoid manually creating those 
MM relations, and telling TCEmain or TYPO3 to do so? In case of the 
hook, which just runs when 'updating' a record, I need to be sure to 
delete all existing MM relations, and then add new ones - which is imho 
a lot of code, which may be implemented already somewhere in TYPO3?

Thanks a lot,
Thomas


Am 20.04.2010 17:01, schrieb JoH asenau:
> Thomas "Thasmo" Deinhamer wrote:
>> Hello folks!
>>
>> When trying to update/postprocess a select field with a TCEmain hook,
>> I get the error:
>> "102: These fields are not properly updated in database: (category_id)
>> Probably value mismatch with fieldtype."
>>
>> This happens e.g. for the extension 'cal' when trying to set some
>> categories for an event by hand:
>> $fields['category_id'] = array(1,2);
>>
>> I even tried:
>> $fields['category_id'] = '1,2';
>
> category_id is INT(11) so the message is correct.
>
>> When doing the same for a tt_news record, setting some categories the
>> same way, everything works fine. (I guess TCEmain cares about the MM
>> table and handles the creation of the desired MM records etc.)
>
> Of course it does, so you have to do it accordingly:
> 1) Get the desired values
> 2) create according entries in the MM table.
> 3) Count the overall entries in the MM table
> 4) Write this value back to category_id
>
> This is default behaviour for MM related fields in TYPO3.
> The field itself contains just the current number of relations.
>
> HTH
>
> Joey
>