雄辩事件的多态关系

Question

I have 2 classes, Coordinate and Hunt

class Coordinate extends Model {

    public function locatable(){
        return $this->morphTo();
    }
}

and

class Hunt extends Model {
    public function coordinate() {
        return $this->morphOne('App\Coordinate', 'locatable');
    }
}

Then I create a new instance of the models using

$cord = new Coordinate;
$hunt = new Hunt;

$hunt->save();
$hunt->coordinate->save($cord);

Now I listen to the saved event of the Hunt

class HuntSaved {
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public $hunt;

    public function __construct(Hunt $hunt) {
        dd($hunt->coordinate);
        $this->hunt = $hunt;
    }


}

The strange thing is that the dd here returns null .
I cannot save the Coordinate first due too its locatable_type and locatable_id which are not null in the database.

My question is, how can I handle the saved event using native eloquent events and get the related model.

Answer 1

在您的关系中，您应该首先创建坐标，然后创建寻线。

$coordinate->hunt()->create(array());