Question

我正在尝试使用嵌套三个级别的更多根位置填充表集：Region，Province和City。

从我正在阅读的excel文件中保存数据。

我写这个剧本：

function importLocations()
{

    $objPHPExcel = PHPExcel_IOFactory::load("./data/elenco_comuni_italiani_30_giugno_2011.xls");

    $locationTable = LocationTable::getInstance();
    /* @var $tree Doctrine_Tree_NestedSet */
    $tree = $locationTable->getTree();

    $startRow = 2;
    $indexRegion = 0;
    $indexProvince = 2;
    $indexCity = 1;

    $objPHPExcel->setActiveSheetIndex($indexRegion);
    $objWorksheetRegion = $objPHPExcel->getActiveSheet();
    $highestRowRegion = $objWorksheetRegion->getHighestRow();
    $highestColumnRegion = $objWorksheetRegion->getHighestColumn();
    $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumnRegion);
    for ($rowRegion = $startRow; $rowRegion <= $highestRowRegion; ++$rowRegion) {
        $region_name = $objWorksheetRegion->getCellByColumnAndRow(0, $rowRegion)->getValue();
        $region_id = $objWorksheetRegion->getCellByColumnAndRow(1, $rowRegion)->getValue();
        // create a new root in the tree
        $tree->createRoot($nodeRegion = $locationTable->createNode($region_name));
        echo "\n\Process to Region: $region_name \n";
        //province
        $objPHPExcel->setActiveSheetIndex($indexProvince);
        $objWorksheetProvince = $objPHPExcel->getActiveSheet();
        $highestRowProvince = $objWorksheetProvince->getHighestRow();
        $highestColumnProvince = $objWorksheetProvince->getHighestColumn();
        $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumnProvince);
        for ($rowProvince = $startRow; $rowProvince <= $highestRowProvince; ++$rowProvince) {
            $province_name = $objWorksheetProvince->getCellByColumnAndRow(0, $rowProvince)->getValue();
            $province_code = $objWorksheetProvince->getCellByColumnAndRow(1, $rowProvince)->getValue();
            $province_region_id = $objWorksheetProvince->getCellByColumnAndRow(2, $rowProvince)->getValue();
            $province_id = $objWorksheetProvince->getCellByColumnAndRow(3, $rowProvince)->getValue();
            if ($province_region_id == $region_id) {
                //create province node and append it to the region
                $nodeProvince = $locationTable->createNode($province_name, $province_code);
                $locationTable->appendNode($nodeProvince, $nodeRegion);
                echo "Process to Province: $province_name \n";
                //city
                $objPHPExcel->setActiveSheetIndex($indexCity);
                $objWorksheetCity = $objPHPExcel->getActiveSheet();
                $highestRowCity = $objWorksheetCity->getHighestRow();
                $highestColumnCity = $objWorksheetCity->getHighestColumn();
                $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumnCity);
                for ($rowCity = $startRow; $rowCity <= $highestRowCity; ++$rowCity) {
                    $city_name = $objWorksheetCity->getCellByColumnAndRow(0, $rowCity)->getValue();
                    $city_province_id = $objWorksheetCity->getCellByColumnAndRow(1, $rowCity)->getValue();
                    $city_region_id = $objWorksheetCity->getCellByColumnAndRow(2, $rowCity)->getValue();
                    if ($city_region_id == $province_region_id && $city_province_id == $province_id) {
                        //create province node and append it to the region
                        $nodeCity = $locationTable->createNode($city_name);
                        $locationTable->appendNode($nodeCity, $nodeProvince);
                        echo "Process to City: $city_name \n";
                    }
                }
            }
        }
    }
    echo "Locations Salvate con Successo! \n\n\n";

}

和我的位置表：

/**
 * LocationTable
 *
 * This class has been auto-generated by the Doctrine ORM Framework
 */
class LocationTable extends Doctrine_Table
{

    const LEVEL_REGION = '0';
    const LEVEL_PROVINCE = '1';
    const LEVEL_CITY = '2';

    /**
     * Returns an instance of this class.
     *
     * @return object LocationTable
     */
    public static function getInstance()
    {
        return Doctrine_Core::getTable('Location');
    }

    /**
     * Developer MUST CALL $parent->refresh() before insert a new node, otherwise
     * following insertions are wrong
     *
     * @param Location $son
     * @param Location $parent
     * @link http://trac.doctrine-project.org/ticket/928
     */
    public function appendNode(Location $son, Location $parent)
    {
        // internally calls save both on parent and son
        $son->getNode()->insertAsLastChildOf($parent);
        // load new parent lft and rgt values
        $parent->refresh();
    }

    /**
     * Build a tree node, save it and return it
     *
     * @param string $label
     * @param string $code
     *
     * @return Location
     */
    public function createNode($label, $code = null)
    {
        $node = $this->create(array('name' => $label, 'code' => $code));
        $node->save();
        return $node;
    }
}

我的学说模式：

Location:
  tableName: locations
  actAs:
    NestedSet:
      hasManyRoots: true
      rootColumnName: root_id
  columns:
    id:
      type: integer(4)
      primary: true
      autoincrement: true
    name:
      type: string(255)
      notnull: true
    code:
      type: string(2)

问题在于，当我去检查给定节点时，我们检查一个省，如果我执行如下查询：

SELECT * FROM locations WHERE lft >= x AND rgt <= y

我找不到我希望找到的城市，但我发现了更多。

读取excel文件的scritp它完美运行。我打印并阅读所有输出并更正。我认为lft和rgt值存在问题。你知道你在文档中发现了一些不是prensa的错误吗？

Answer 1

您的定义中设置了hasManyRoots。这意味着，您的嵌套集表包含多个树。在每个树lft和rgt中构建独立于其他树，因此使用SELECT * FROM locations WHERE lft >= x AND rgt <= y查询从多个树中检索节点。

您有两种方法可以解决它：快速和正确。

快速的一个：

每条记录都有一个root_id（在rootColumnName属性中设置，它也是默认值）列。此列包含树的根节点的id。因此，如果您必须知道所需节点的root_id并将其用作

SELECT * FROM locations WHERE lft >= x AND rgt <= y and root_id = rid

正确的：

不要直接查询数据库。从数据库中获取所需的记录作为对象（例如，使用DQL），然后使用getChildren或getDescendants遍历它：

// Get the node into $provincevar
$all_cities_in_province = $province->getDescendants();

有关详细说明，请参阅NestedSet documentation。

还有一点注意：这可能是巧合，缺少缓存或其他东西，但看起来Doctrine会立即刷新NestedSet节点操作函数所做的更改（例如createRoot，{{1 }，delete等。但这是我在具有开发环境的单机上所做的观察。

填充表嵌套集Doctrine 1.2

1 个答案: