App\Models\Forum\ForumCover::setMainCoverAttribute PHP Method

    public function setMainCoverAttribute($value)
    {
        if (($value['_delete'] ?? false) === true) {
            $this->deleteFile();
        } elseif (($value['cover_file'] ?? null) !== null) {
            $this->storeFile($value['cover_file']);
        }
    }