“传递给 ViewHelper 的未声明参数"例外 [英] "Undeclared arguments passed to ViewHelper" Exception

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问题描述

更新 TYPO3 后,我得到一个 TYPO3Fluid\Fluid\Core\ViewHelper\Exception传递给 ViewHelper 的未声明参数......有效参数是."

After updating TYPO3, I get a TYPO3Fluid\Fluid\Core\ViewHelper\Exception "Undeclared arguments passed to ViewHelper ... Valid arguments are."

推荐答案

这可能是由于使用已删除功能的扩展.仅使用 TYPO3 内核,您应该不会看到此错误.

This may be due to an extension using functionality that has been dropped. Using only the TYPO3 core, you should not see this error.

在您的扩展中:如果您仍然在带有参数的 ViewHelper 类中使用 render() 方法,您可能需要替换:

In your extension: If you still use the render() method in your ViewHelper class with arguments, you may want to replace this:

之前:

public function render(Mail $mail, $type = 'web', $function = 'createAction')

<小时>

之后:

public function initializeArguments()
{
    parent::initializeArguments();

    $this->registerArgument('mail', Mail::class, 'Mail', true);
    $this->registerArgument('type', 'string', 'type: web | mail', false, 'web');
    $this->registerArgument('function', 'string', 'function: createAction | senderMail | receiverMail', false, 'createAction');
}

public function render()
{
    $mail = $this->arguments['mail'];
    $type = $this->arguments['type'] ?? 'web';
    // ...  

}

<小时>

另外,

  • 如果不需要使用 render()(例如,除非您需要访问 $this 变量),您可能需要切换到 renderStatic() 以获得性能原因(另见这个其他StackOverflow 回答 澄清)
  • TYPO3Fluid\Fluid\Core\ViewHelper 中的类继承而不是TYPO3\CMS\Fluid\Core\ViewHelper:
  • if there is no need to use render() (e.g. unless you need to access $this variables), you may want to switch to renderStatic() for performance reasons (see also this other StackOverflow answer for clarification)
  • inherit from classes in TYPO3Fluid\Fluid\Core\ViewHelper instead of TYPO3\CMS\Fluid\Core\ViewHelper:
// use TYPO3\CMS\Fluid\Core\ViewHelper\AbstractViewHelper;
use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;

<小时>

文档:

变更日志:

  • Breaking: #82414 - CMS ViewHelper base classes removed
  • Deprecation: #81213 - Render method arguments on ViewHelpers deprecated
  • Breaking: #87193 - Deprecated functionality removed (for 10)

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