zend-framework2 - 渲染带有子视图的视图？

Question

我正在尝试使用特定模板（电子邮件的主视图，例如 2 列布局等）发送具有特定“布局”（用于页眉/页脚）的电子邮件。

$mainViewhtml 有：<?= $this->content ?>但是当它应该是$childView包含所有变量的 html时，它始终为 NULL。

这是我在MailService.php文件中的内容：

public function createMessage($to, $subject, $template, $variables) : Message
{
    // Create mail
    $message = new Message();

    // Create mail body
    $mainView   = new ViewModel();
    $mainView->setTerminal(true);
    $mainView->setTemplate('layout/mail.phtml');

    $childView  = new ViewModel();
    $childView->setTerminal(true);
    $childView->setTemplate($template);
    $childView->setVariables($variables);

    $mainView->addChild($childView, 'content');

    $msgRender  = $this->viewRenderer->render($mainView);

    $body = new Part($msgRender);
    $body->setType(Mime::TYPE_HTML);

    $messageBody = new MessageBody();
    $messageBody->addPart($body);
    $message->setBody($messageBody);

    $message->setTo($to);
    $message->setSubject($subject);

    return $message;
}

$this->viewRenderer在工厂中注入：

/** @var RendererInterface $viewRenderer */
$viewRenderer = $serviceLocator->get('viewrenderer');

Answer 1

好的，我开始工作了！:) 我必须渲染childView然后将此渲染设置为视图变量mainView

public function createMessage($to, $subject, $template, $variables) : Message
{
    // Create mail
    $message = new Message();

    // Create mail body
    $mainView   = new ViewModel();
    $mainView->setTerminal(true);
    $mainView->setTemplate('layout/mail.phtml');

    $childView  = new ViewModel();
    $childView->setTemplate($template);
    $childView->setVariables($variables);
    $childRender = $this->viewRenderer->render($childView); // render child

    $mainView->setVariable('content', $childRender); // set childRender to mainView

    $msgRender  = $this->viewRenderer->render($mainView);

    $body = new Part($msgRender);
    $body->setType(Mime::TYPE_HTML);

    $messageBody = new MessageBody();
    $messageBody->addPart($body);
    $message->setBody($messageBody);

    $message->setTo($to);
    $message->setSubject($subject);

    return $message;
}