extjs 4：仅按特定id显示树面板节点 MySQL数据库： tree.php 问题:

1） 我只想显示树面板根，其中id为38和43。如果我们更改.php中的代码，当单击树面板时，树无法扩展数据。因此，我不这样认为，我们在php脚本中更改代码？如何仅在树面板中显示我想要的数据？

---

P/S:id的传递参数是灵活的，不仅仅是38和43。

我认为这将满足您的需要：

   <?php
    mysql_connect("localhost", "root", "") or die("Could not connect");
    mysql_select_db("tree") or die("Could not select database");

    $parent_id = $_GET['node'];
    $id = $_GET['id'];
    // 1) Remove false as checked
    $query = "SELECT id, text,parent_id, leaf FROM mytree WHERE parent_id='".$parent_id."' ";
    if($parent_id == 0)
        $query = $query."AND id IN (".$id.") ";
    $query = $query."ORDER BY text ASC";
    $rs = mysql_query($query);
    $arr = array();
    while($obj = mysql_fetch_object($rs)) {

      // 2) If no leaf then destroy the attribute
      if($obj->leaf != "false"){
         // 1) set checked attribute with an boolean value 
         $obj->checked = false;       
      }
     $arr[] = $obj;
    }
    echo json_encode($arr);
?>

---

不确定为什么C.Y.的编辑建议被拒绝，但我已经添加了它，因为它是正确的。
<?php
mysql_connect("localhost", "root", "") or die("Could not connect");
mysql_select_db("tree") or die("Could not select database");

$parent_id = $_GET['node'];
$id = $_GET['id'];
    // 1) Remove false as checked
    $query = "SELECT id, text,parent_id, leaf FROM mytree WHERE parent_id='".$parent_id."' ORDER BY text ASC";
    $rs = mysql_query($query);
    $arr = array();
    while($obj = mysql_fetch_object($rs)) {

      // 2) If no leaf then destroy the attribute
      if($obj->leaf != "false"){
         // 1) set checked attribute with an boolean value 
         $obj->checked = false;       
      }
     $arr[] = $obj;
    }
    echo json_encode($arr);
?>

Ext.onReady(function() {
    var store = Ext.create('Ext.data.TreeStore', {
        proxy: {
    type: 'ajax',
    url: 'tree.php',
    extraParams :{id:'38,43'},
    // Here Magic comes
    actionMethods: {
      create : 'GET',
      read   : 'GET',
      update : 'GET',
      destroy: 'GET'
    }
        },
        sorters: [{
            property: 'leaf',
            direction: 'ASC'
        }, {
            property: 'text',
            direction: 'ASC'
        }]
    });

   <?php
    mysql_connect("localhost", "root", "") or die("Could not connect");
    mysql_select_db("tree") or die("Could not select database");

    $parent_id = $_GET['node'];
    $id = $_GET['id'];
    // 1) Remove false as checked
    $query = "SELECT id, text,parent_id, leaf FROM mytree WHERE parent_id='".$parent_id."' ";
    if($parent_id == 0)
        $query = $query."AND id IN (".$id.") ";
    $query = $query."ORDER BY text ASC";
    $rs = mysql_query($query);
    $arr = array();
    while($obj = mysql_fetch_object($rs)) {

      // 2) If no leaf then destroy the attribute
      if($obj->leaf != "false"){
         // 1) set checked attribute with an boolean value 
         $obj->checked = false;       
      }
     $arr[] = $obj;
    }
    echo json_encode($arr);
?>