_hierarchyTreeData(array_values($this->dataProvider->getModels()), $this->rootParentId); return $this->renderTreelist($models); } protected function renderTreelist($models) { foreach ($models as $index => $model) { $row = $this->renderTreelistItem($model['item']); $children = empty($model['children']) ? '' : $this->renderTreelist($model['children']); $output[] = '

'. $row . $children .'

'; } if (!empty($output)) return '

'. implode("\n", $output) .'

'; } protected function renderTreelistItem($model) { $options = []; $id = ArrayHelper::getValue($model, $this->keyNameId); Html::addCssClass($options, "treelistitem-$id"); $parent_id = ArrayHelper::getValue($model, $this->keyNameParentId); if ($parent_id) { Html::addCssClass($options, "treelistitem-parent-$parent_id"); } // if (is_string($this->value)) { // return ArrayHelper::getValue($model, $this->value); // } else { // return call_user_func($this->value, $model, $key, $index, $this); // } return Html::tag('span', ArrayHelper::getValue($model, $this->displayField), $options); } }