Question

我希望深入了解视图助手和部分助手的主题。我尝试了一个教程的treeview元素，它工作得很好。这是一个很好的例子来尝试我认为的视图助手，但我迷失了。在我的理解中，递归部分应该是部分的？！有人可以解释如何在不同的帮助器部分中拆分以下功能吗？以及如何在我看来实施？

    function treeview($array, $currentParent, $currLevel = 0, $prevLevel = -1) {

    foreach ($array as $categoryId => $category) {
        if ($currentParent == $category['parent_id']) {                       
            if ($currLevel > $prevLevel) echo " <ol class='tree'> "; 
                if ($currLevel == $prevLevel) echo " </li> ";
                echo '<li> <label for="subfolder2">'.$category['name'].'</label> <input type="checkbox" name="subfolder2"/>';
                if ($currLevel > $prevLevel) { $prevLevel = $currLevel; }
                $currLevel++; 
                treeview ($array, $categoryId, $currLevel, $prevLevel);
                $currLevel--;               
            }   
        }
        if ($currLevel == $prevLevel) echo " </li>  </ol> ";
}

我的观点如下：

require_once('../application/library/Treeview.php');
header("Content-Type: text/html; charset=utf-8");
echo $this->headLink()->prependStylesheet($this->baseUrl().'/css/tree.css'); 
$this->title = "Treeview Test";
$this->headTitle($this->titel);

$arrayCategories = array();
foreach($this->treeviewitems as $row) : 
    $arrayCategories[$row['id']] = array("parent_id" => $row['parent_id'], "name" =>$row['name']);

endforeach; 
treeview($arrayCategories, 0);

编辑，因为命名和路径问题：

新的观察者头：

class Application_View_Helper_Treeview extends Zend_View_Helper_Abstract
{
    public function treeview($array, $currentParent, $currLevel = 0, $prevLevel = -1) {

我的application.ini中的

路径（你可以看到我之前尝试过命名的东西）

resources.view.helperPath.Company_View_Helper = "Company/View/Helper"
resources.view.helperPath.Britta_View_Helper = "Britta/View/Helper"
resources.view.helperPath.Application_View_Helper = APPLICATION_PATH "/views/helpers"
resources.view.helperPath.Zend_Dojo_View_Helper = "Zend/Dojo/View/Helper"

现在是保存viewhelper文件的路径：

name：Treeview.php 路径：C：\ wamp \ www \ riba_doc \ application \ views \ helpers

错误：致命错误：在第13行的C：\ wamp \ www \ riba_doc \ application \ views \ scripts \ treeview \ index.phtml中调用未定义的函数treeview（）

Answer 1

您可以采用类似ZF1的方式执行此操作，如下所示。

使用以下内容创建文件./library/My/View/Helper/Treeview.php

<?php

class My_View_Helper_Treeview extends Zend_View_Helper_Abstract
{
    public function treeview($array, $currentParent, $currLevel = 0, $prevLevel = -1)
    {

        foreach ($array as $categoryId => $category) {
            if ($currentParent == $category['parent_id']) {
                if ($currLevel > $prevLevel) {
                    echo " <ol class='tree'> ";
                }
                if ($currLevel == $prevLevel) {
                    echo " </li> ";
                }
                echo '<li> <label for="subfolder2">' . $category['name'] . '</label> <input type="checkbox" name="subfolder2"/>';
                if ($currLevel > $prevLevel) {
                    $prevLevel = $currLevel;
                }
                $currLevel++;
                $this->treeview($array, $categoryId, $currLevel, $prevLevel);
                $currLevel--;
            }
        }
        if ($currLevel == $prevLevel) {
            echo " </li>  </ol> ";
        }
    }
}

接下来，我们需要告诉ZF如何找到我们的Treeview类并将其视为一个视图助手。这是通过将以下内容添加到我们的./application/config/application.ini文件中来完成的：

resources.view.helperPath.My_View_Helper_ = "My/View/Helper/"

我们可能 - 不确定，奥！ - 还必须将My_命名空间添加到自动加载器：

autoloaderNameSpaces[] = "My_"

最后，我们可以使用以下命令在视图脚本中调用Treeview帮助器：

<? $this->treeview($arrayCategories, 0) ?>

视图和部分帮助程序的示例

1 个答案: