TYPO3 Core

We would very much like to able to send addtional parameters to the prefix function. This is currently not possible.

'config' => [
'type' => 'slug',
'appearance' => [
'prefix' => SlugService::class . '->jobPrefix',
'parameters' => [
'foo' => 'bar'
]
],
'generatorOptions' => [
'fields' => ['title'],
'replacements' => SlugUtility::REPLACEMENTS
],
'fallbackCharacter' => '-',
'eval' => 'uniqueInSite',
'size' => 60
]

In TcaSlug.php a solution to pass the provided parameters:

if ($prefix !== '') {
                //$parameters = ['site' => $site, 'languageId' => $languageId, 'table' => $table, 'row' => $row];
                $parameters = [
                    'site' => $site, 'languageId' => $languageId, 'table' => $table, 'row' => $row,
                    'parameters' => $fieldConfig['config']['appearance']['parameters'] ?? []
                ];
                $prefix = GeneralUtility::callUserFunction($prefix, $parameters, $this);
            } elseif ($site instanceof SiteInterface) {
                // default behaviour used for pages
                $prefix = $this->getPrefixForSite($site, $languageId);
            }

We believe this would be a welcomed extension of the Slug type for TCA.