laravel mailables - >在渲染视图后替换标记

Question

following thing:

I read posts from a wordpress database. The idea is that the posts act as master.

E.g. we have a wordpress post with post content:

Hi XX_USERNAME_XX,

nice to meet you.

XX_LARAVEL_CONTENT_XX

thanks for your donation of XX_DONATION_AMOUNT_XX

bye

I now want to send a normal laravel mailable that when sending out, does the replacements. Now the thing is the views in laravel typically act as master.

in this case though, I want the wordpress post content to be the master, and insert the laravel view into the wordpress content (XX_LARAVEL_CONTENT_XX). And while doing that, replace additional tokens (XX_DONATION_AMOUNT_XX).

How can I do stuff, just before the laravel mailable is rendered? e.g. before the output of the mailable is passed to the mail service, i want to hook in my own filter, take the output from the mailable and put that output into the wordpress post. Is there something supporting this?

Answer 1

not quite clear to me why you choose to compose your views this way, but in order to achieve this your way, you could use the callbacks variable in the Mailable class. They will be called upon the message right after it has been composed from your view

Class MyMail extends Mailable
{
    use Queueable, SerializesModels;
    public $master;
    publiс $placeholder = 'XX_LARAVEL_CONTENT_XX';

    public function __construct($master)
    {
        $this->master = $master; // 'BEFORE + XX_LARAVEL_CONTENT_XX + AFTER';
    }

    public function build()
    {
        $this->callbacks[] = function ($message) {
            $oldBody = $message->getBody();
            $newBody = str_replace($this->placeholder, $oldBody, $this->master);
            $message->setBody($newBody);
        };

        return $this->view('my-laravel-mail-view') // your normal message setup
            ->to('[e-mail]')
            ->subject('Hello');
    }
}

And if you want to replace multiple variables, remember that str_replace supports arrays as search and replacement:

str_replace(['aa', 'bb'], ['AA', 'BB'], $subject);