php – Symfony2翻译yaml数组和twig循环

我试图从翻译文件中转换一个数组

// messages.en.yml

termsAndConditions:
  title: Terms and Conditions
  paragraph:
    - Paragraph text...blah blah...1
    - Paragraph text...blah blah...2
    - Paragraph text...blah blah...3
    - Paragraph text...blah blah...n

// termsandconditions.html.twig

//试过……

{% for i in range(1,termsAndConditions.paragraph|length) -%}
    <p>{% trans %}termsAndConditions.paragraph. {{ i }}{% endtrans %}</p>
{%- endfor %}

//并试过……

{% for i in range(1,termsAndConditions.paragraph|length) -%}
   <p>{{ 'termsAndConditions.paragraph.' ~ i ~ |trans }}</p>
{%- endfor %}

解决方法:

您需要使用成对的键：值才能使事情发挥作用：

// messages.en.yml
termsAndConditions:
  title: Terms and Conditions
  paragraph:
    1: Paragraph text...blah blah...1
    2: Paragraph text...blah blah...2
    3: Paragraph text...blah blah...3
    4: Paragraph text...blah blah...n

此外,由于您希望使用变量进行翻译,因此可以通过这种方式访问​​翻译{{(‘termsAndConditions.paragraph.’〜i)| trans}}.

我已经硬编码了4而不是termsAndConditions.paragraph | length.不确定你是否可以从树枝模板中访问它…

// termsandconditions.html.twig
{% for i in range(1,4) -%}
   <p>{{('termsAndConditions.paragraph.'~i)|trans}}</p>
{%- endfor %}

它应该工作.希望能帮助到你.

UPDATE

除非你在模板中定义了变量或者你通过控制器注入了变量,否则termsAndConditions.paragraph | length是没有意义的.

解决方案

解决方案1.在您的控制器中,访问yaml并获取翻译数量,然后将其传递给模板,就是这样.

解决方案2.创建服务并将转换器服务注入其中.在控制器中创建一个计算特定键元素数量的方法.注入转换器服务比直接读取yaml更好,因为它在读取目录时会缓存它.

解决方案3.与2相同但创建树枝过滤器.我打算去看这个,因为它看起来很有趣.

解决方案3

让我们从创建扩展开始：

namespace Acme\DemoBundle\Twig\Extension;

class TransLengthExtension extends \Twig_Extension
{
    private $translator;

    public function __construct($translator) {
        $this->translator = $translator;
    }


    public function getFilters()
    {
        return array(
            new \Twig_SimpleFilter('translength', array($this, 'translengthFilter')),
        );
    }

    public function translengthFilter($id, $domain = null)
    {
        if (null === $domain) {
            $domain = 'messages';
        }

        $i = 0;
        $g = $this->translator->getMessages();
        foreach($g["messages"] as $key => $message) {
            if(substr( $key, 0, strlen($id) ) === $id ) {
                $i++;
            }
        }

        return $i;
    }

    public function getName()
    {
        return 'acme_extension';
    }
}

如您所见,它计算翻译目录中$id出现次数.翻译负责区域设置,加载适当的目录等.它还缓存了在性能方面非常好的结果.

注册注入翻译器并注册为枝条扩展的服务：

services:
    acme.twig.acme_extension:
        class: Acme\DemoBundle\Twig\Extension\TransLengthExtension
        arguments: 
            - "@translator"
        tags:
            - { name: twig.extension }

现在,在您的模板中：

{% set end = 'termsAndConditions.paragraph'|translength %}
{% for i in range(1,end) -%}
   <p>{{('termsAndConditions.paragraph.'~i)|trans}}</p>
{%- endfor %}

希望能帮助到你.