例如,我的包名称空间是Facebook\Bundle\FacebookBundle\Extension
。
使用此方法我如何创建树枝延伸?
答案 0 :(得分:33)
一切都在这里:How to write a custom Twig Extension。
<强> 1。创建扩展程序:
// src/Facebook/Bundle/Twig/FacebookExtension.php
namespace Facebook\Bundle\Twig;
use Twig_Extension;
use Twig_Filter_Method;
class FacebookExtension extends Twig_Extension
{
public function getFilters()
{
return array(
'myfilter' => new Twig_Filter_Method($this, 'myFilter'),
);
}
public function myFilter($arg1, $arg2='')
{
return sprintf('something %s %s', $arg1, $arg2);
}
public function getName()
{
return 'facebook_extension';
}
}
<强> 2。注册分机即服务
# src/Facebook/Bundle/Resources/config/services.yml
services:
facebook.twig.facebook_extension:
class: Facebook\Bundle\Twig\AcmeExtension
tags:
- { name: twig.extension }
第3。使用它
{{ 'blah'|myfilter('somearg') }}
答案 1 :(得分:14)
您还可以使用getFunctions()
创建twig函数class FacebookExtension extends Twig_Extension
{
public function getFunctions()
{
return array(
'myFunction' => new Twig_Filter_Method($this, 'myFunction'),
);
}
public function myFunction($arg1)
{
return $arg1;
}
使用您的功能:
{{ myFunction('my_param') }}
答案 2 :(得分:14)
自Symfony 2.1起,Twig_Filter_Method类 DEPRECATED
请使用 Twig_SimpleFilter 类,如以下示例所示:
\ SRC \ Acme公司\捆绑\ CoreBundle \枝条\ DatetimeExtension.php
<?php
namespace Acme\Bundle\CoreBundle\Twig;
use Symfony\Component\DependencyInjection\ContainerInterface;
class DatetimeExtension extends \Twig_Extension
{
/**
* @var \Symfony\Component\DependencyInjection\ContainerInterface
*/
private $container;
public function __construct(ContainerInterface $container)
{
$this->container = $container;
}
public function getFilters()
{
return array(
'dateFormat' => new \Twig_SimpleFilter('dateFormat', array($this, 'dateFormat')),
'datetimeFormat' => new \Twig_SimpleFilter('datetimeFormat', array($this, 'datetimeFormat'))
);
}
/**
* @param mixed $date
* @return string
*/
public function dateFormat($date)
{
$format = $this->container->getParameter('acme_core.date_format');
return $this->format($date, $format);
}
/**
* @param mixed $date
* @return string
*/
public function datetimeFormat($date)
{
$format = $this->container->getParameter('acme_core.datetime_format');
return $this->format($date, $format);
}
/**
* @param mixed $date
* @param string $format
* @throws \Twig_Error
* @return string
*/
private function format($date, $format)
{
if (is_int($date) || (is_string($date) && preg_match('/^[0-9]+$/iu', $date))) {
return date($format, intval($date, 10));
} else if (is_string($date) && !preg_match('/^[0-9]+$/', $date)) {
return date($format, strtotime($date));
} else if ($date instanceof \DateTime) {
return $date->format($format);
} else {
throw new \Twig_Error('Date or datetime parameter not valid');
}
}
public function getName()
{
return 'datetime_extension';
}
}
\ SRC \ Acme公司\捆绑\ CoreBundle \资源\配置\ services.yml
services:
acme_core.twig.datetime_extension:
class: Acme\Bundle\CoreBundle\Twig\DatetimeExtension
arguments: [@service_container]
tags:
- { name: twig.extension }
用法示例:
{{ value|datetimeFormat }}
Symfony文档:http://symfony.com/doc/master/cookbook/templating/twig_extension.html
答案 3 :(得分:2)
给出的答案均不适用于Symfony 3.4及更高版本。
// src/TwigExtension/customFilters.php
namespace App\TwigExtension;
use Twig\TwigFilter;
class customFilters extends \Twig_Extension {
public function getFilters() {
return array(
new TwigFilter('base64_encode', array($this, 'base64_en'))
);
}
public function base64_en($input) {
return base64_encode($input);
}
}
然后在您的树枝模板中可以完成
{{ 'hello world' | base64_encode }}
就这样。有关详细说明,您可以查看参考。
参考: DigitalFortress