Attempted to load class "Table" from the global namespace

[waldo]

Hallo zusammen,

ich versuche aktuell eine private Erweiterung (diese habe ich vor einigen Jahren unter Contao 4 entwickelt) kompatibel für Contao 5 zu machen.
Grob zusammengefasst lassen sich über diese Erweiterung im Backend verschiedene Produkte und Produktkategorien anlegen und dann im Frontend in einer Produktübersicht und in einer Produkt-Detailseite ausspielen.

Ich habe zwei Backend-Module hinzugefügt, in denen die Produkte und die Kategorien verwaltet werden können:

config.php:

// Backend Modules
$GLOBALS['BE_MOD']['extension']['products'] = [
  'tables' => ['tl_products'],
];

$GLOBALS['BE_MOD']['extension']['categories'] = [
  'tables' => ['tl_categories'],
]; 

Wenn ich jedoch im Backend nun auf eine der beiden Kategorien gehe, erhalte ich folgenden Fehler:

Symfony\Component\ErrorHandler\Error\ClassNotFoundError:
Attempted to load class "Table" from the global namespace.
Did you forget a "use" statement for e.g. "Symfony\Component\Console\Helper\Table", "Spatie\SchemaOrg\Table", "League\CommonMark\Extension\Table\Table", "Doctrine\ORM\Mapping\Table" or "Doctrine\DBAL\Schema\Table"?

  at vendor/contao/core-bundle/contao/classes/Backend.php:293
  at Contao\Backend->getBackendModule()
     (vendor/contao/core-bundle/contao/controllers/BackendMain.php:146)
  at Contao\BackendMain->run()
     (vendor/contao/core-bundle/src/Controller/BackendController.php:44)
  at Contao\CoreBundle\Controller\BackendController->mainAction()
     (vendor/symfony/http-kernel/HttpKernel.php:181)
  at Symfony\Component\HttpKernel\HttpKernel->handleRaw()
     (vendor/symfony/http-kernel/HttpKernel.php:76)
  at Symfony\Component\HttpKernel\HttpKernel->handle()
     (vendor/symfony/http-kernel/Kernel.php:197)
  at Symfony\Component\HttpKernel\Kernel->handle()
     (web/index.php:44) 

Ich kann diesen Fehler allerdings nicht wirklich zuordnen, was mir die Fehlersuche sehr erschwert.
Habt ihr vielleicht einen Ansatz, wie ich auf den Fehler kommen könnte?

[Spooky]

Der dataContainer eines deiner DCAs stimmt nicht. Poste die DCAs.

[waldo]

Gerne.
Meine DCAs sind:

tl_content.php:

<?php
use Contao\DC_Table;
use Contao\Backend;

// Palettes
$GLOBALS['TL_DCA']['tl_content']['palettes']['productList'] = '{type_legend},type,headline;{template_legend:hide},customTpl;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID;{invisible_legend:hide},invisible,start,stop';
$GLOBALS['TL_DCA']['tl_content']['palettes']['productPreview'] = '{type_legend},type,headline;{product_legend},products;{template_legend:hide},customTpl;{protected_legend:hide},protected;{expert_legend:hide},guests,cssID;{invisible_legend:hide},invisible,start,stop';

// Fields
$GLOBALS['TL_DCA']['tl_content']['fields']['products'] = array(
  /*'label'                     => $GLOBALS['TL_LANG']['tl_content']['products'],*/
  'inputType'                 => 'multiColumnWizard',
  'eval'                      => array(
    'columnFields'  => [
      'product' => [
        /*'label'     => $GLOBALS['TL_LANG']['tl_content']['products']['product'],*/
        'inputType' => 'select',
        'foreignKey'=> 'tl_products.artno',
        'eval'      => ['allowHtml' => false, 'style' => 'width: 100%; max-width:200px']
      ]
    ]
  ),
  'sql'               => "blob NULL"
);

tl_form.php:

<?php
use Contao\DC_Table;
use Contao\Backend;

// remove regex from recipient field to allow inserttags there
$GLOBALS['TL_DCA']['tl_form']['fields']['recipient']['eval']['rgxp'] = '';

?>

tl_categories.php:

<?php
use Contao\DC_Table;
use Contao\Backend;

$GLOBALS['TL_DCA']['tl_categories'] = array
(
  // Config
  'config' => array
  (
    'dataContainer'                     => 'Table',
    'sql'                                             => array
    (
      'keys'                                         => array
      (
        'id'                                         => 'primary'
      )
    )
  ),

  // List
  'list' => array
  (
    'sorting' => array
    (
      'mode'                            => 5,
      'fields'                  => array('sorting'),
      'paste_button_callback'   => array('tl_categories', 'pasteElement')
    ),
    'label' => array(
      'fields'                  => array('categoryde', 'categoryen'),
      'showColumns'             => true
    ),
    'operations' => array
    (
      'edit' => array
      (
        'label'               => &$GLOBALS['TL_LANG']['tl_categories']['edit'],
        'href'                => 'act=edit',
        'icon'                => 'edit.gif'
      ),
      'cut' => array
      (
        'label'               => &$GLOBALS['TL_LANG']['tl_categories']['cut'],
        'href'                => 'act=paste&mode=cut',
        'icon'                => 'cut.svg',
        'attributes'          => 'onclick="Backend.getScrollOffset()"',
        'button_callback'     => array('tl_categories', 'cutCategory')
      ),
      'delete' => array
      (
        'label'               => &$GLOBALS['TL_LANG']['tl_categories']['delete'],
        'href'                => 'act=delete',
        'icon'                => 'delete.gif',
        'attributes'          => 'onclick="if(!confirm(\'' . $GLOBALS['TL_LANG']['MSC']['deleteConfirm'] . '\'))return false;Backend.getScrollOffset()"'
      )
    )
  ),

  // Palettes
  'palettes' => array
  (
    'default'                   => '{basicinfo_legend}, categoryde, categoryen;'
  ),

  // Fields
  'fields' => array
  (
    'id' => array
    (
      'sql'                     => "int(100) unsigned NOT NULL auto_increment"
    ),
    'pid' => array
    (
      'sql'                     => "int(100) unsigned NOT NULL default 0",
    ),
    'sorting' => array
    (
      'sql'                     => "int(100) unsigned NOT NULL default 0"
    ),
    'tstamp' => array
    (
      'label'                     => $GLOBALS['TL_LANG']['tl_categories']['tstamp'],
      'eval'                    => array('rgxp'=>'date'),
      'flag'                    => 5,
      'sql'                     => "int(10) unsigned NOT NULL default '0'"
    ),
    'categoryde' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_categories']['categoryde'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>true, 'tl_class'=>'w50'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'categoryen' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_categories']['categoryen'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>true, 'tl_class'=>'w50'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    )
  )
);

class tl_categories extends Backend {
  public function cutCategory($row, $href, $label, $title, $icon, $attributes){
    $objPage = \BundleProvider\ContaoProductsBundle\Model\CategoryModel::findById($row['id']);

        return '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.Contao\StringUtil::specialchars($title).'"'.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</a> ';
  }

  public function pasteElement(DataContainer $dc, $row, $table, $cr, $arrClipboard=null){
        $imagePasteAfter = Image::getHtml('pasteafter.gif', sprintf($GLOBALS['TL_LANG'][$table]['pasteafter'][1], $row['id']));

    $objPage = \BundleProvider\ContaoProductsBundle\Model\CategoryModel::findById($row['pid']);
    return '<a href="'.$this->addToUrl('act='.$arrClipboard['mode'].'&amp;mode=1&amp;pid='.$row['id'].(!\is_array($arrClipboard['id']) ? '&amp;id='.$arrClipboard['id'] : '')).'" title="'.Contao\StringUtil::specialchars(sprintf($GLOBALS['TL_LANG'][$dc->table]['pasteafter'][1], $row['id'])).'" onclick="Backend.getScrollOffset()">'.$imagePasteAfter.'</a> ';
    }
}

?>

tl_products.php:

<?php
use Contao\DC_Table;
use Contao\Backend;

$GLOBALS['TL_DCA']['tl_products'] = array
(
  // Config
  'config' => array
  (
    'dataContainer'                     => 'Table',
    'sql'                                             => array
    (
      'keys'                                         => array
      (
        'id'                                         => 'primary'
      )
    ),
    'onsubmit_callback'         =>  array(array('tl_products', 'onsubmit_callback'))
  ),

  // List
  'list' => array
  (
    'sorting' => array
    (
      'mode'                            => 1,
      'flag'                                      => 11,
      'fields'                                  => array('artno'),
      'panelLayout'             => 'filter;search,limit'
    ),

    'label' => array(
      'fields'                  => array('id', 'artno', 'titlede'),
      'label_callback'          => array('tl_products', 'label_callback'),
      'showColumns'             => true
    ),
    'operations' => array
    (
      'edit' => array
      (
        'label'               => &$GLOBALS['TL_LANG']['tl_products']['edit'],
        'href'                => 'act=edit',
        'icon'                => 'edit.gif'
      ),
      'copy' => array
      (
        'label'             => &$GLOBALS['TL_LANG']['tl_products']['copy'],
        'href'              => 'act=copy',
        'icon'              => 'copy.gif',
        'button_callback'     => array('tl_products', 'copyProduct')
      ),
      'delete' => array
      (
        'label'               => &$GLOBALS['TL_LANG']['tl_products']['delete'],
        'href'                => 'act=delete',
        'icon'                => 'delete.gif',
        'attributes'          => 'onclick="if(!confirm(\'' . $GLOBALS['TL_LANG']['MSC']['deleteConfirm'] . '\'))return false;Backend.getScrollOffset()"'
      ),
      'toggle' => array
            (
                'label'               => &$GLOBALS['TL_LANG']['tl_products']['toggle'],
                'icon'                => 'visible.svg',
                'attributes'          => 'onclick="Backend.getScrollOffset();return AjaxRequest.toggleVisibility(this,%s)"',
                'button_callback'     => array('tl_products', 'toggleIcon')
            )
    )
  ),

  // Palettes
  'palettes' => array
  (
    'default'                   => '{basicinfo_legend}, artno, titlede, titleen; {category_legend}, category; {description_legend}, shortdescriptionde, shortdescriptionen, descriptionde, descriptionen; {image_legend}, imageSRC; {datasheet_legend}, datasheet_data, dimensions, weight, shippinginfo_de, shippinginfo_en, ean, conradnr, tariffno; {download_legend}, downloadSRC, linkedDownloads; {faq_legend}, faq_data; {recommendedProducts_legend}, recommendedProducts; {youtube_legend}, youtube_de, youtube_en; {datasheetData_legend}, datasheetImageSRC'
  ),

  // Fields
  'fields' => array
  (
    'id' => array
    (
      'sql'                     => "int(10) unsigned NOT NULL auto_increment"
    ),
    'tstamp' => array
    (
      'label'                     => $GLOBALS['TL_LANG']['tl_products']['tstamp'],
      'eval'                    => array('rgxp'=>'date'),
      'flag'                    => 5,
      'sql'                     => "int(10) unsigned NOT NULL default '0'"
    ),
    'published' => array
    (
        'label'               => $GLOBALS['TL_LANG']['tl_products']['published'],
        'filter'              => true,
        'inputType'           => 'checkbox',
        'sql'                 => "char(1) NOT NULL default '0'"
    ),
    'artno' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['artno'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>true, 'tl_class'=>'w50', 'doNotCopy'=>true),
        'search'                => true,
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'titlede' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['titlede'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>true, 'tl_class'=>'clr w50', 'doNotCopy'=>true),
        'search'                => true,
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'titleen' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['titleen'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>true, 'tl_class'=>'w50', 'doNotCopy'=>true),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'category' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['category'],
      'inputType'               => 'multiColumnWizard',
      'eval'                    => array(
        'columnFields' => [
          'data' => [
              'label'     => &$GLOBALS['TL_LANG']['tl_products']['category']['data'],
              'inputType' => 'select',
              'foreignKey'=> 'tl_categories.categoryde',
              'eval'      => ['includeBlankOption'=>true, 'allowHtml' => false, 'style'=>'width:100%']
          ]
        ],
        'buttons'     => array('copy'=>false, 'up'=>false, 'down'=>false),
        'tl_class'    => 'w50'
      ),
      'sql'               => "blob NULL"
    ),
    'shortdescriptionde'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['shortdescriptionde'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>true, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'shortdescriptionen'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['shortdescriptionen'],
        'inputType'             => 'text',
        'eval'                  => array('mandatory'=>true, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'descriptionde'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['descriptionde'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>true, 'rte'=>'tinyMCE', 'style'=>'resize: none', 'tl_class'=>'clr'),
        'sql'                   => "mediumtext NOT NULL default ''"
    ),
    'descriptionen'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['descriptionen'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>true, 'rte'=>'tinyMCE', 'style'=>'resize: none', 'tl_class'=>'clr'),
        'sql'                   => "mediumtext NOT NULL default ''"
    ),
    'imageSRC' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['imageSRC'],
      'inputType'               => 'fileTree',
      'eval'                    => array('mandatory'=>true, 'multiple'=>true, 'orderField'=>'orderImageSRC', 'files'=>true, 'filesOnly'=>true, 'isGallery'=>true, 'extensions'=>'png', 'fieldType'=>'checkbox', 'path'=>'files/files/Produkte'),
      'sql'                     => "blob NULL"
    ),
    'orderImageSRC' => array
    (
      'label'                   => &$GLOBALS['TL_LANG']['tl_products']['sortOrder'],
      'sql'                     => "blob NULL"
    ),
    'downloadSRC' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['downloadSRC'],
      'inputType'               => 'fileTree',
      'eval'                    => array('multiple'=>true, 'files'=>true, 'orderField'=>'orderDownloadSRC', 'filesOnly'=>true, 'isGallery'=>false, 'fieldType'=>'checkbox', 'path'=>'files/files/Produkte'),
      'sql'                     => "blob NULL"
    ),
    'orderDownloadSRC' => array
    (
      'label'                   => &$GLOBALS['TL_LANG']['tl_products']['sortOrder'],
      'sql'                     => "blob NULL"
    ),
    'linkedDownloads' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['linkedDownloads'],
      'inputType'               => 'multiColumnWizard',
      'eval'                    => array(
        'columnFields' => [
          'titlede' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['linkedDownloads']['titlede'],
              'inputType' => 'text',
              'mandatory' => true,
              'class'     => 'tl_text',
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%;'],
          ],
          'titleen' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['linkedDownloads']['titleen'],
              'inputType' => 'text',
              'mandatory' => true,
              'class'     => 'tl_text',
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%'],
          ],
          'data' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['linkedDownloads']['data'],
              'inputType' => 'text',
              'mandatory' => true,
              'class'     => 'tl_text',
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%;'],
          ]
        ],
        'style'     => 'max-width:100%;'
      ),
      'sql'               => "blob NULL"
    ),
    'datasheet_data' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['datasheet_data'],
      'inputType'               => 'multiColumnWizard',
      'eval'                    => array(
        'columnFields' => [
          'headline_de' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['datasheet_data']['headline_de'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ],
          'headline_en' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['datasheet_data']['headline_en'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ],
          'data_de' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['datasheet_data']['data_de'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ],
          'data_en' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['datasheet_data']['data_en'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ]
        ], 'style' => 'max-width:100%'
      ),
      'sql'               => "blob NULL"
    ),
    'dimensions'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['dimensions'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'shippinginfo_de'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['shippinginfo_de'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "mediumtext NOT NULL default ''"
    ),
    'shippinginfo_en'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['shippinginfo_en'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "mediumtext NOT NULL default ''"
    ),
    'weight'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['weight'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'ean'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['ean'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none', 'doNotCopy'=>true),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'tariffno'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['tariffno'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none'),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'conradnr'                 => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['conradnr'],
        'inputType'             => 'textarea',
        'eval'                  => array('mandatory'=>false, 'tl_class'=>'w50', 'style'=>'resize: none', 'doNotCopy'=>true),
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'faq_data' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['faq_data'],
      'inputType'               => 'multiColumnWizard',
      'eval'                    => array(
        'columnFields' => [
          'questionde' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['faq_data']['questionde'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ],
          'questionen' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['faq_data']['questionen'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ],
          'answerde' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['faq_data']['answerde'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ],
          'answeren' => [
              'label'     => $GLOBALS['TL_LANG']['tl_products']['faq_data']['answeren'],
              'inputType' => 'textarea',
              'mandatory' => true,
              'eval'      => ['mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%; resize: none;'],
          ]
        ],
        'style' => 'max-width:100%',
        'buttons' => array('copy'=>false)
      ),
      'sql'               => "blob NULL"
    ),
    'recommendedProducts' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['recommendedProducts'],
      'inputType'               => 'multiColumnWizard',
      'eval'                    => array(
        'columnFields' => [
          'data' => [
              'label'           => $GLOBALS['TL_LANG']['tl_products']['recommendedProducts']['products'],
              'inputType'       => 'select',
              'foreignKey'      => 'tl_products.artno',
              'eval'            => ['includeBlankOption'=>true, 'mandatory' => false, 'allowHtml' => false, 'style' => 'width: 100%;'],
          ]
        ],
        'buttons'               =>  array('copy'=>false),
        'tl_class'              =>  'w50'
      ),
      'sql'                     => "blob NULL"
    ),
    'youtube_de' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['youtube_de'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>false, 'tl_class'=>'w50', 'allowHtml' => false, 'doNotCopy'=>true),
        'search'                => true,
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'youtube_en' => array
    (
        'label'                 => $GLOBALS['TL_LANG']['tl_products']['youtube_en'],
        'inputType'             => 'text',
        'eval'                                  => array('mandatory'=>false, 'tl_class'=>'w50', 'allowHtml' => false, 'doNotCopy'=>true),
        'search'                => true,
        'sql'                   => "varchar(255) NOT NULL default ''"
    ),
    'datasheetImageSRC' => array
    (
      'label'                   => $GLOBALS['TL_LANG']['tl_products']['datasheetImageSRC'],
      'inputType'               => 'fileTree',
      'eval'                    => array('mandatory'=>false, 'multiple'=>false, 'orderField'=>'orderdatasheetImageSRC', 'files'=>true, 'filesOnly'=>true, 'isGallery'=>true, 'extensions'=>'png', 'fieldType'=>'checkbox', 'path'=>'files/files/Produkte'),
      'sql'                     => "blob NULL"
    ),
    'orderdatasheetImageSRC' => array
    (
      'label'                   => &$GLOBALS['TL_LANG']['tl_products']['sortOrderDatasheetImage'],
      'sql'                     => "blob NULL"
    ),
  )
);

class tl_products extends Backend
{

  public function toggleIcon($row, $href, $label, $title, $icon, $attributes)
  {
    $this->import('BackendUser', 'User');
    if (strlen($this->Input->get('tid'))) {
      $this->toggleVisibility($this->Input->get('tid'), ($this->Input->get('state') == 0));
      $this->redirect($this->getReferer());
    }

    $href .= '&amp;id='.$this->Input->get('id').'&amp;tid='.$row['id'].'&amp;state='.$row[''];

    if (!$row['published']){
      $icon = 'invisible.gif';
    }

    return '<a href="'.$this->addToUrl($href).'" title="'.specialchars($title).'"'.$attributes.'>'.$this->generateImage($icon, $label).'</a> ';
  }

  public function toggleVisibility($intId, $blnPublished)
  {
    $this->createInitialVersion('tl_products', $intId);

    // Trigger the save_callback
    if (is_array($GLOBALS['TL_DCA']['tl_products']['fields']['published']['save_callback'])) {
        foreach ($GLOBALS['TL_DCA']['tl_products']['fields']['published']['save_callback'] as $callback) {
            $this->import($callback[0]);
            $blnPublished = $this->$callback[0]->$callback[1]($blnPublished, $this);
        }
    }

    // Update the database
    $this->Database->prepare("UPDATE tl_products SET tstamp=". time() .", published='" . ($blnPublished ? '0' : '1') . "' WHERE id=?")
        ->execute($intId);
    $this->createNewVersion('tl_products', $intId);

    // Save Log
    $product = \BundleProvider\ContaoProductsBundle\Model\ProductModel::findById($intId);
    $logMsg = BackendUser::getInstance()->username . " changed visibility for product " . $product->artno . " (ID: " . $product->id . ").";
    \System::log($logMsg, __METHOD__, TL_GENERAL);
  }

  // Duplicate Product
  public function copyProduct($row, $href, $label, $title, $icon, $attributes, $table)
  {
        if ($GLOBALS['TL_DCA'][$table]['config']['closed']) {
            return '';
        }
        return '<a href="'.$this->addToUrl($href.'&amp;id='.$row['id']).'" title="'.Contao\StringUtil::specialchars($title).'"'.$attributes.'>'.Contao\Image::getHtml($icon, $label).'</a> ';
    }

  // Label Callback
  public function label_callback($row, $label, DataContainer $dc, $args)
  {

    // Replace Image
    if($args[0]){
      $product = \BundleProvider\ContaoProductsBundle\Model\ProductModel::findById($args[0]);

      if($product->orderImageSRC) {
        $src = \FilesModel::findByUuid(unserialize($product->orderImageSRC)[0])->path;
        $smallImg = \Image::get($src, 300, null, 'proportional');
        $args[0] = '<img src="' . $smallImg . '" style="max-width:100px;">';
      }
    }

    return $args;
  }

  // OnSubmit Callback
  public function onsubmit_callback(DataContainer $dc)
  {
    $logMsg = BackendUser::getInstance()->username . " updated product " . $dc->activeRecord->artno . " (ID: " . $dc->activeRecord->id . ").";
    \System::log($logMsg, __METHOD__, TL_GENERAL);
  }
}

[Spooky]

Statt

'dataContainer' => 'Table' 

muss es

'dataContainer' => \Contao\DC_Table::class 

sein.

https://docs.contao.org/dev/referenc...fig/#reference

[waldo]

Das wars, vielen Dank!