How to load all relations in Laravel 5.1 polymorphic relation?

Question

Laravel

There is a main Pattern model that has many Layer models .
There is a Layer model that has a polymorphic relation to the Image and Text models . The Text
model has no child relationship, while the Image has a one-to-one relationship with the File model . In what way, when unloading the Pattern model , pull up all the Layers , each with its own additional relations?

Pattern::whereId($id)->with('layers.layereable')->get();

Answer 1

use Illuminate\Database\Eloquent\Relations\MorphTo;

$activities = ActivityFeed::query()
    ->with(['parentable' => function (MorphTo $morphTo) {
        $morphTo->morphWith([
            Event::class => ['calendar'],
            Photo::class => ['tags'],
            Post::class => ['author'],
        ]);
    }])->get();