himiklab\sortablegrid\SortableGridBehavior::gridSort PHP Method

    public function gridSort($items)
    {
        /** @var ActiveRecord $model */
        $model = $this->owner;
        if (!$model->hasAttribute($this->sortableAttribute)) {
            throw new InvalidConfigException("Model does not have sortable attribute `{$this->sortableAttribute}`.");
        }
        $newOrder = [];
        $models = [];
        foreach ($items as $old => $new) {
            $models[$new] = $model::findOne($new);
            $newOrder[$old] = $models[$new]->{$this->sortableAttribute};
        }
        $model::getDb()->transaction(function () use($models, $newOrder) {
            foreach ($newOrder as $modelId => $orderValue) {
                /** @var ActiveRecord[] $models */
                $models[$modelId]->updateAttributes([$this->sortableAttribute => $orderValue]);
            }
        });
    }