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Bug #90399

Updated by Christoph Lehmann almost 5 years ago

https://docs.typo3.org/m/typo3/reference-tca/master/en-us/ColumnsConfig/Type/Select.html#treeconfig allows to set a custom DataProvider. 

 In TYPO3.CMS/typo3/sysext/core/Classes/Tree/TableConfiguration/TreeDataProviderFactory.php:43 the custom DataProvider is created but there is no check if it implements the EventDispatcherInterface. 

 <pre> 
         if (!empty($tcaConfiguration['treeConfig']['dataProvider'])) { 
             $dataProvider = GeneralUtility::makeInstance($tcaConfiguration['treeConfig']['dataProvider'], $tcaConfiguration, $table, $field, $currentValue); 
         } 
 </pre> 

 This ends in an exception: 

 "Argument 1 passed to TYPO3\\CMS\\Core\\Tree\\TableConfiguration\\MyTreeDataProvider::__construct() must implement interface Psr\\EventDispatcher\\EventDispatcherInterface, array given. 

 The custom DataProvider looks like this 

 <pre> 
 <?php 
 namespace TYPO3\CMS\Core\Tree\TableConfiguration; 
 class MyTreeDataProvider extends DatabaseTreeDataProvider {} 
 </pre>

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