Laravel 5: passing variable into subject

Question

I am using Laravel's mail class and would like to pass variable into subject. Here is my code:

public function send()
{
    $offer = Offer::find($id)->toArray();

    Mail::send('offerMail', $offer, function($message) {
        $message->to('[email protected]');
        $message->subject('Offer No.' . $offer['code']);
    });
}

I am getting

Undefined variable: offer

within line where subject is defined.

Answer 1

Don't forget to inject your outer variables into Closure's scope.

Mail::send('offerMail', $offer, function($message) use ($offer) {
    $message->to('[email protected]');
    $message->subject('Offer No.' . $offer['code']);
});

You can see examples about this under Example 3 section in here.