文本中的电子邮件地址到 mailto 超链接(可能在 Twig 中?) [英] Email adress in text to mailto hyperlink (possible in Twig?)

问题描述

我有一个名为 contactInfo 的具有文本类型属性的实体.在表单中输入这些详细信息时，用户只能提交没有 html 的文本.通常在此文本区域中的某处输入电子邮件地址(以及更多详细信息).

I have an entity with a text-type attribute called contactInfo. Users can only submit text without html when entering these details in a form. Often an email address is entered somewhere in this textarea (together with more details).

现在，当我显示此 contactInfo 时，我想将任何电子邮件地址调整为带有 mailto 超链接的电子邮件地址.例如

Now when I display this contactInfo I would like adjust any email address to an email address with a mailto hyperlink. For example

Email us at: [e-mail]. 

应该变成:

Email us at: <a href="mailto:[e-mail]">[e-mail]</a>.

这个怎么办?我可以直接在 Twig 中使用 RegEx 或 Replace 过滤器执行此操作吗?还是我真的应该在控制器中执行此操作?

How to go about this? Can I do this directly in Twig with some RegEx or Replace filter? Or should I really do this in the controller?

推荐答案

你可以创建一个 twig 过滤器，比如mailTo"并做一些像

You can create a twig filter, something like "mailTo" and do something like

<?php
   namespace App\Twig;

    use Twig\Extension\AbstractExtension;
    use Twig\TwigFilter;

    class AppExtension extends AbstractExtension
    {
        public function getFilters()
        {
            return array(
                new TwigFilter('mailTo', array($this, 'mailTo'), array('is_safe' => 'html')),
            );
        }

        public function mailTo(string $text)
        {
            if(preg_match_all('/[\p{L}0-9_.-]+@[0-9\p{L}.-]+\.[a-z.]{2,6}\b/u',$text,$mails)){
    foreach($mails[0]as $mail ){
        $text = str_replace($mail,'<a href="mailto:'.$mail.'">'.$mail.'</a>',$text);
    }
}


            return $text;
        }
    }

然后在你的模板中像这样使用它

And then use it like this in your template

contactInfo|mailTo

无论如何，不​​要在数据库中存储mailto:"或html标签，因为它们总是相同的......

Either way, don't store "mailto:" or html tags in database when those are always gonna be the same...

关于树枝自定义过滤器的文档https://symfony.com/doc/current/templating/twig_extension.html

documentation on twig custom filters https://symfony.com/doc/current/templating/twig_extension.html

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