查看和部分助手的示例

Question

我想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。这将是一个很好的例子，用我认为的视图帮手来尝试，但我迷路了。在我的理解中，递归部分应该是部分？！ 有人可以解释如何将不同的帮助器部分中的以下功能分开吗？以及如何在我看来实现？

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> "; 
} 

我的观点看起来如下：

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：

新视图助手头：在我的application.ini

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

路径（正如你可以看到我之前尝试命名的东西）

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" 

现在的路径，在这里我保存视图助手文件：

名称：Treeview.php 路径：C：\ WAMP \ WWW \ riba_doc \程序\意见\助手

错误：致命错误：调用第13行中的C：\ wamp \ www \ riba_doc \ application \ views \ scripts \ treeview \ index.phtml中未定义的函数treeview（）

Answer 1

您可以在一点ZF1-如下所示。

创建文件./library/My/View/Helper/Treeview.php有：

<?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怎么找到我们的树状视图类，并把它作为一个视图帮手。这是通过添加下面我们./application/config/application.ini文件来完成：

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

我们可能 - 不知道，aaugh！ - 也有到My_命名空间添加到磁带自动加载：

autoloaderNameSpaces[] = "My_" 

最后，我们可以利用在调用视图脚本树视图助手：

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