本文介绍了如何使用教义在单个查询中获取整个树?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
此片段来自 官方网站按预期工作:
This snippet from official website works as expected:
$treeObject = Doctrine::getTable('Category')->getTree();
$rootColumnName = $treeObject->getAttribute('rootColumnName');
foreach ($treeObject->fetchRoots() as $root) {
$options = array(
'root_id' => $root->$rootColumnName
);
foreach($treeObject->fetchTree($options) as $node) {
echo str_repeat(' ', $node['level']) . $node['name'] . "
";
}
}
但我看到有几十个查询发送到数据库.
But I see there are dozens of queries sent to database.
一口怎么办?
推荐答案
试试这个:
Doctrine_Core::getTable('YourTableWithTree')->createQuery('tree')
->addOrderBy('tree.root_id ASC')
->addOrderBy('tree.lft ASC');
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