duanhuang2150 2018-07-20 05:32
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如何在TYPO3的钩子中更新关系1:n的对象

I have an A entity and this have a property call B as relation 1:n from B to A. When I update A in TCA backend interface, when an particular field is active, the solution runs a hook of type function processDatamap_postProcessFieldArray (...)

I have to create a new element of B and save in ObjectStorage attribute of A. This works in execute time, create an objet and attaching it, but can not save in DB. I have tried with functions of extbase and Repository but it does not work. In my reserch identified the framework Doctrine for create queries, similar to persistence behavior, but in this case I could save the new object of B.

My question is: how could I use Doctrine for build query that allows to make update for object A, adding the new element B and save this element in the relation in DB.

I am working with TYPO3 7.6

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  • doulv1760 2018-07-20 07:32
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    You shouldn't use Extbase within the DataHandler hooks. Also plain database queries (neither with Dotrine or TYPO3_DB) are not good idea for creating entities within BE. Better way is to use TYPO3 DataHandler API. Example creation of Entity B during create/edit of Entity A could look like that.

    Register hook typo3conf/ext/example/ext_localconf.php

    defined('TYPO3_MODE') || die('Access denied.');
    
    $GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['t3lib/class.t3lib_tcemain.php']['processDatamapClass']['example'] = 'Vendor\\Example\\DataHandling\\DataHandler';
    

    typo3conf/ext/example/Classes/DataHandling/DataHandler.php

    namespace Vendor\Example\DataHandling;
    
    use TYPO3\CMS\Core\SingletonInterface;
    use TYPO3\CMS\Core\Utility\StringUtility;
    
    class DataHandler implements SingletonInterface
    {
        public function processDatamap_afterDatabaseOperations(
            string $status,
            string $table,
            $id,
            $fieldArray,
            \TYPO3\CMS\Core\DataHandling\DataHandler $dataHandler
        ) {
            // Do nothing if other table is processed
            if ($table !== 'tx_example_domain_model_entitya') {
                return;
            }
    
            // Get real UID of entity A if A is new record
            $idOfEntityA = $dataHandler->substNEWwithIDs[$id];
    
            // Example fields of entity B
            $entityB = [
                'sys_language_uid' => '0',
                'entitya' => $idOfEntityA,
                'hidden' => '0',
                'title' => 'I\'m entitty B',
                'starttime' => '0',
                'endtime' => '0',
                'pid' => $fieldArray['pid'],
            ];
    
            // Add entity B associated with entity A
            $dataHandler->start(
                [
                    'tx_example_domain_model_entityb' => [
                        StringUtility::getUniqueId('NEW') => $entityB
                    ]
                ],
                []
            );
            $dataHandler->process_datamap();
        }
    }
    

    Tested on 8.7, but will work on 7.6 too. Here you can read more about DataHandler https://docs.typo3.org/typo3cms/CoreApiReference/8.7/ApiOverview/Typo3CoreEngine/Database/

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
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