douyinliu8813 2018-08-13 08:18 采纳率: 100%
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为什么在symfony 3.4中呈现php模板是打印http标头?

I'm trying to move from a messy PHP template structure, with many duplicated code, to slots to help us having a similar twig philosophy with the extends.

The problem that we have is that some templates are rendering the HTTP Headers: enter image description here

The code for Form/form.html.php is:

<?php
/**
 * @var \Symfony\Bundle\FrameworkBundle\Templating\TimedPhpEngine    $view
 * @var \Symfony\Bundle\FrameworkBundle\Templating\Helper\FormHelper $formHelper
 * @var \Symfony\Component\Templating\Helper\SlotsHelper             $slotsHelper
 * @var \Symfony\Component\Form\FormView                             $form
 */
$formHelper = $view['form'];
$slotsHelper = $view['slots'];

?>
<div class="form-wrapper">
    <?php $slotsHelper->output('form-start', $formHelper->start($form)) ?>
    <?php $slotsHelper->output('form-widget', $formHelper->widget($form)) ?>
    <?php $slotsHelper->output('form-end', $formHelper->end($form)) ?>
</div>

And the code for the other template, Form/Order/form.html.php, is

<?php
/**
 * @var \Symfony\Bundle\FrameworkBundle\Templating\TimedPhpEngine    $view
 * @var \Symfony\Bundle\FrameworkBundle\Templating\Helper\FormHelper $formHelper
 * @var \Symfony\Component\Templating\Helper\SlotsHelper             $slotsHelper
 * @var \Symfony\Component\Form\FormView                             $form
 */
$formHelper = $view['form'];
$slotsHelper = $view['slots'];
$view->extend(':Form:form.html.php');

$slotsHelper->start('form-widget');
echo $formHelper->widget($form);
$slotsHelper->stop();

In the Controller, I'm rendering the form as always I've rendered a form:

$this->render("Form/Order/form.html.php", ['form' => $orderForm->createView()])

If I change this sentence by "returned string", Symfony prints only this "returned string", not the headers.

The form is rendered correctly, but for some reason that I cannot understand, Symfony is printing the HTTP Headers.

Thanks!

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