how change locale in email being sent from controller - laravel 5.4

Question

I am successfully sending emails with this piece of code:

 \App::setLocale('pl');
 Mail::send('emails.new_'.$itemtype, ['object' => $object, 'email' =>     $email_recipee], function ($m) use ( $email_recipee, $object, $itemtype) {
 $m->to($email_recipee, 'Title')->subject(' Subject of email');
 //
 });

But the emails are translated to en, the default language of the app.

My question

How make Laravel send email with a locale declared just for a particular email (each recipient has a different language set).

What I tried:

• \App::setLocale('pl'); just before the Mail command

• setting my working middleware in the controller globally in __construct():

  $this->middleware('setLocale'); // sets the locale to the recipee locale

dirty (?) solution

For now I just add a line inside the email view:

{{ \App::setLocale($lead->client->lang)}}

Any better way to do it? Thank you.

Answer 1

TL;DR: Just set a $locale field in an object of Mailable class:

class ResetPassword extends Mailable
{
   // ...

    /**
     * Create a new message instance.
     */
    public function __construct(User $user, string $token)
    {
        $this->user = $user;
        $this->token = $token;
        /*
         * Set locale of mail to User's locale
         */
        $this->locale = $this->user->locale; // <-- of course adapt this line to YOUR User model :]
    }

Long story:

There is a trait Localizable. It declares a method withLocale that calls a given function "enveloped" in a specified locale. By "enveloping" I mean: remember a current locale, set a new locale, call a function, restore the remembered locale.

An example of usage can be found in \Illuminate\Mail\Mailable::send:

public function send(MailerContract $mailer)
{
    return $this->withLocale($this->locale, function () use ($mailer) {
        Container::getInstance()->call([$this, 'build']);

        return $mailer->send($this->buildView(), $this->buildViewData(), function ($message) {
            $this->buildFrom($message)
                 ->buildRecipients($message)
                 ->buildSubject($message)
                 ->runCallbacks($message)
                 ->buildAttachments($message);
        });
    });
}

However, this method gives us a clue how to change a locale for a mail - in the first line there is $this->locale. Indeed, Mailable has this field defined:

class Mailable implements MailableContract, Renderable
{
   // ...

    /**
     * The locale of the message.
     *
     * @var string
     */
    public $locale;