使用Doctrine 1.2和Symfony 1.4获取节点祖先

时间:2012-07-06 23:37:21

标签: php symfony-1.4 nodes doctrine-1.2 nested-sets

我尝试从节点中获取所有祖先时遇到了一些麻烦;

这是我的schema.yml:

Constante:
connection: doctrine
tableName: constante
actAs:
NestedSet:
  hasManyRoots: true
  rootColumnName: parent_id
columns:
id:
  type: integer(8)
  fixed: false
  unsigned: false
  primary: true
  autoincrement: true
parent_id:
  type: integer(8)
  fixed: false
  unsigned: false
  primary: false
  notnull: true
  autoincrement: false
lft:
  type: integer(8)
  fixed: false
  unsigned: false
  primary: false
  notnull: true
  autoincrement: false
rgt:
  type: integer(8)
  fixed: false
  unsigned: false
  primary: false
  notnull: true
  autoincrement: false
level:
  type: integer(8)
  fixed: false
  unsigned: false
  primary: false
  notnull: true
  autoincrement: false
cod_interno:
  type: string(5)
  fixed: false
  unsigned: false
  primary: false
  notnull: false
  autoincrement: false
nombre:
  type: string(64)
  fixed: false
  unsigned: false
  primary: false
  notnull: true
  autoincrement: false

这就是我试图从节点(不是根节点)获取所有祖先的方式

$path        = Doctrine_Core::getTable('Constante')->find($condicion); // $condicion = 57
$node        = $path->getNode();
$isLeaf      = $node->isLeaf(); //var_dump throws true
$ancestors   = $node->getAncestors(); //var_dump throws false
$isValidNode = $node->isValidNode(); //var_dump throws true

作为$ancestors == false我无法迭代它并获得所有祖先(我正在尝试构建一个简单的面包屑)

这是我存储在DB中的内容,这是真实数据(仅用于测试puporse)

+---------++---------++---------++---------++----------++---------+
|ID       ||PARENT_ID||LFT      ||RGT      ||LEVEL     ||NOMBRE   |
|---------||---------||---------||---------||----------||---------|
|56       ||56       ||1        ||4        ||0         ||COUNTRY  | --> this is root
|57       ||56       ||2        ||3        ||1         ||CANADA   | --> child of root
+---------++---------++---------++---------++----------++---------+

According to this如果Ancestors返回false,则表示所选节点是根。

我花了好几个小时寻找没有运气的解决方案。

如果您需要更多信息,请随时提出要求!

编辑:我在输入表格中的内容时犯了一个错误,感谢olivierw提醒我这件事。

2 个答案:

答案 0 :(得分:0)

您表中的rgt字段似乎有错误。如果id 56是根,则rgt = 4id 57应为rgt = 3。所以你的表应该是:

+---------++---------++---------++---------++----------++---------+
|ID       ||PARENT_ID||LFT      ||RGT      ||LEVEL     ||NOMBRE   |
|---------||---------||---------||---------||----------||---------|
|56       ||56       ||1        ||4        ||0         ||COUNTRY  |
|57       ||56       ||2        ||3        ||1         ||CANADA   |
+---------++---------++---------++---------++----------++---------+

所以你会正确地得到祖先。

答案 1 :(得分:0)

我想分享我的解决方案,希望它对其他人有用:

动作:

//action.class.php
public function executeIndex(sfWebRequest $request) {

$condicion = $request->getParameter('id') ? $request->getParameter('id') : 0;

if ($condicion > 0) {
  $path = $tree = Doctrine_Core::getTable('Constante')->find($condicion);
} else {
  $tree = Doctrine_Core::getTable('Constante');
  $path = null;
}

$this->constantes = $tree;
$this->path = $path;
$this->setTemplate('index');

}

查看:

//indexSuccess.php
<?php
$var = (is_null($sf_request->getParameter('id'))) ? $constantes->getTree()->fetchRoots() : $constantes->getNode()->getChildren();
?>

<?php if ($var): foreach ($var as $constante): ?>
    <tr>
      <td><?php echo $constante->getNombre() ?></td>
    </tr>
  <?php
  endforeach;
endif;
?>

部分:

//_breadcrumb.php
<?php

if ($path) {

  echo '<ul class="breadcrumb">';

  $node = $path->getNode();
  $ancestors = $node->getAncestors();

  if ($ancestors)
    foreach ($ancestors AS $ancestor) {
      echo '<li>' . link_to($ancestor->getNombre(), 'constantes/more?id=' . $ancestor->getId()) . '<span class="divider">/</span></li>';
    }

  echo '</ul>';
}
?>

我认为代码不言自明,但如果您有任何疑问,请告诉我!