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Custom TYPO3 condition for checking if a specific extension is loaded (with custom Symfony ExpressionLanguage provider)
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| <?php | |
| declare(strict_types=1); | |
| namespace Vendor\Extension\ExpressionLanguage\FunctionsProvider; | |
| use Symfony\Component\ExpressionLanguage\ExpressionFunction; | |
| use Symfony\Component\ExpressionLanguage\ExpressionFunctionProviderInterface; | |
| /** | |
| * ConditionFunctionsProvider | |
| */ | |
| class ConditionFunctionsProvider implements ExpressionFunctionProviderInterface | |
| { | |
| /** | |
| * getFunctions | |
| * | |
| * @return ExpressionFunction[] | |
| */ | |
| public function getFunctions(): array | |
| { | |
| return [ | |
| $this->getIsExtensionLoadedFunction(), | |
| ]; | |
| } | |
| /** | |
| * getIsExtensionLoadedFunction | |
| * | |
| * [isExtensionLoaded('extensionKey')] | |
| * lib.foo = TEXT | |
| * lib.foo.value = bar | |
| * [END] | |
| * | |
| * @return ExpressionFunction | |
| */ | |
| protected function getIsExtensionLoadedFunction(): ExpressionFunction | |
| { | |
| return new ExpressionFunction('isExtensionLoaded', static function () { | |
| // Not implemented, we only use the evaluator | |
| }, static function ($existingVariables, $extensionKey) { | |
| return !empty($extensionKey) && ExtensionManagementUtility::isLoaded($extensionKey); | |
| }); | |
| } | |
| } |
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| <?php | |
| // This file needs to be in the Configuration folder of your extension | |
| return [ | |
| 'typoscript' => [ | |
| Vendor\Extension\ExpressionLanguage\TyposcriptConditionProvider::class, | |
| ] | |
| ]; |
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| <?php | |
| declare(strict_types=1); | |
| namespace Vendor\Extension\ExpressionLanguage; | |
| use Vendor\Extension\ExpressionLanguage\FunctionsProvider\ConditionFunctionsProvider; | |
| use TYPO3\CMS\Core\ExpressionLanguage\AbstractProvider; | |
| /** | |
| * TyposcriptConditionProvider | |
| */ | |
| class TyposcriptConditionProvider extends AbstractProvider | |
| { | |
| public function __construct() | |
| { | |
| $this->expressionLanguageProviders = [ | |
| ConditionFunctionsProvider::class, | |
| ]; | |
| } | |
| } |
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