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<?php |
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namespace devgroup\JsTreeWidget\actions\nestedset; |
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use yii\base\Action; |
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use yii\base\InvalidConfigException; |
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use yii\db\ActiveRecord; |
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use Yii; |
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use yii\db\Query; |
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use yii\web\Response; |
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class FullTreeDataAction extends Action |
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{ |
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/** @var string */ |
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public $leftAttribute = 'lft'; |
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/** @var string */ |
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public $rightAttribute = 'rgt'; |
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/** @var string set name for multi root tree */ |
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public $rootAttribute = false; |
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/** @var ActiveRecord */ |
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public $className; |
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/** @var string */ |
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public $modelLabelAttribute = 'name'; |
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private $tableName; |
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public function init() |
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{ |
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if (true === empty($this->className) || false === is_subclass_of($this->className, ActiveRecord::class)) { |
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throw new InvalidConfigException('"className" param must be set and must be child of ActiveRecord'); |
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} |
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/** @var ActiveRecord $class */ |
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$class = $this->className; |
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$this->tableName = $class::tableName(); |
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$scheme = Yii::$app->getDb()->getTableSchema($this->tableName); |
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$columns = $scheme->columns; |
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if (false !== $this->rootAttribute && false === isset($columns[$this->rootAttribute])) { |
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throw new InvalidConfigException("Column '{$this->rootAttribute}' not found in the '{$this->tableName}' table"); |
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} |
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if (false === isset( |
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$columns[$this->leftAttribute], |
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$columns[$this->rightAttribute], |
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$columns[$this->modelLabelAttribute] |
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) |
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) { |
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throw new InvalidConfigException( |
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"Some of the '{$this->leftAttribute}', '{$this->rightAttribute}', '{$this->modelLabelAttribute}', " |
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. "not found in the '{$this->tableName}' columns list" |
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); |
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} |
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} |
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public function run() |
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{ |
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$selectArray = [ |
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'id', |
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$this->leftAttribute, |
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$this->rightAttribute, |
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$this->modelLabelAttribute, |
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]; |
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$orderBy = []; |
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if (false !== $this->rootAttribute) { |
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$selectArray[] = $this->rootAttribute; |
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$orderBy[$this->rootAttribute] = SORT_ASC; |
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} |
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$orderBy[$this->leftAttribute] = SORT_ASC; |
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Yii::$app->response->format = Response::FORMAT_JSON; |
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$data = (new Query()) |
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->from($this->tableName) |
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->select($selectArray) |
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->orderBy($orderBy) |
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->all(); |
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return $this->prepareNestedData($data); |
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} |
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/** |
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* Converts single or multi root Nested Set database data into multidimensional array for using in the |
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* jsTree widget |
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* |
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* @param array $data |
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* @param int $lft |
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* @param null $rgt |
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* @param int $root |
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* @return array |
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*/ |
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public function prepareNestedData($data, $lft = 0, $rgt = null, $root = 0) |
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{ |
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$res = []; |
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foreach ($data as $row) { |
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$currentRoot = isset($row[$this->rootAttribute]) ? $row[$this->rootAttribute] : 0; |
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if (is_null($rgt) || $row[$this->rightAttribute] < $rgt) { |
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if ($lft + 1 == $row[$this->leftAttribute] && $root == $currentRoot) { |
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if ($row[$this->leftAttribute] + 1 !== $row[$this->rightAttribute]) { |
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$res[] = [ |
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'id' => $row['id'], |
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'text' => $row[$this->modelLabelAttribute], |
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'children' => self::prepareNestedData( |
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$data, |
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$row[$this->leftAttribute], |
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$row[$this->rightAttribute], |
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$currentRoot |
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), |
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]; |
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} else { |
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$res[] = [ |
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'id' => $row['id'], |
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'text' => $row[$this->modelLabelAttribute], |
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'children' => [] |
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]; |
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} |
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$lft = $row[$this->rightAttribute]; |
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} else if ($row[$this->leftAttribute] == 1 && $root !== $currentRoot) { |
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$res[] = [ |
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'id' => $row['id'], |
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'text' => $row[$this->modelLabelAttribute], |
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'children' => self::prepareNestedData( |
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$data, |
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$row[$this->leftAttribute], |
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$row[$this->rightAttribute], |
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$currentRoot |
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), |
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]; |
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} |
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} |
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} |
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return $res; |
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} |
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} |