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PHP应用本文讲述了Zend Framework自定义Helper类相关注意事项.分享给大家供大家参考,具体如下:
PHP应用编写自定义的Helper类
PHP应用编写自定义的Helper类很容易,只要遵循以下几个原则即可:
PHP应用① 类名必须是 Zend_View_Helper_*,*是helper的名称.例如,你在写一个名为“specialPurpose”的类,类名将至少是"SpecialPurpose",另外你还应该给类名加上前缀,建议将“View_Helper”作为前缀的一部份:“My_View_Helper_SpecialPurpose”.(注意大小写)你将需要将前缀(不包含下划线)传递给addHelperPath() 或 setHelperPath().
② 类中必须有一个public的办法,该办法名与helper类名相同.这个办法将在你的模板调用"$this->specialPurpose()"时执行.在我们的“specialPurpose”例子中,相应的办法声明可以是 “public function specialPurpose()”.
③ 一般来说,Helper类不应该echo或print或有其它形式的输出.它只需要返回值就可以了.返回的数据应当被转义.
④ 类文件的命名应该是helper办法的名称,比如在"specialPurpose"例子中,文件要存为“SpecialPurpose.php”.
PHP应用把helper类的文件放在你的helper路径下, Zend_View就会自动加载,实例化,持久化,并执行.
PHP应用三点类文件名称,类名称,类中helper办法,保持某种程度上的一致.
PHP应用贴代码:
PHP应用两个helper,看清楚了,他们的不同啊.....
PHP应用version zf 1.10
PHP应用Bootstrap.php
PHP应用
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap {
protected function _initDoctype() {
$this->bootstrap ( 'view' );
$view = $this->getResource ( 'view' );
$view->doctype ( 'XHTML1_STRICT' );
}
protected function _initView() {
$view = new Zend_View ();
$view->setEncoding ( 'UTF-8' );
$view->doctype ( 'XHTML1_STRICT' );
$view->addHelperPath('../application/views/helpers', 'My_View_Helper');
$viewRenderer = new Zend_Controller_Action_Helper_ViewRenderer();
Zend_Controller_Action_HelperBroker::addHelper($viewRenderer);
$viewRenderer->setView($view);
return $view;
}
}
PHP应用application/views/helpers
PHP应用Img.php:
PHP应用
class Zend_View_Helper_Img extends Zend_View_Helper_Abstract
{
public function img()
{
return "this is a img";
}
}
PHP应用TestHelper.php:
PHP应用
class My_View_Helper_TestHelper extends Zend_View_Helper_Abstract
{
public function testHelper()
{
return "this is a TestHelper";
}
}
PHP应用action中使用:
PHP应用
<?php echo $this->doctype() ?>
<?php echo $this->img() ?>
<?php echo $this->testHelper() ?>
PHP应用附加内容,在initView中添加addHelperPath,可以改成采用加载application.ini文件配置项的方式把路径进行配置.如下
PHP应用
class Bootstrap extends Zend_Application_Bootstrap_Bootstrap {
protected function _initDoctype() {
$this->bootstrap ( 'view' );
$view = $this->getResource ( 'view' );
$view->doctype ( 'XHTML1_STRICT' );
}
protected function _initView() {
$view = new Zend_View ();
$view->setEncoding ( 'UTF-8' );
$view->doctype ( 'XHTML1_STRICT' );
$options = $this->getOptions ();
$viewOptions = $options ['resources']['view']['helperPath'];
if (is_array ($viewOptions)) {
foreach($viewOptions as $helperName =>$path)
{
$view->addHelperPath ( $path, $helperName );
}
}
$viewRenderer = new Zend_Controller_Action_Helper_ViewRenderer ();
Zend_Controller_Action_HelperBroker::addHelper ( $viewRenderer );
$viewRenderer->setView ( $view );
return $view;
}
}
PHP应用
[production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1
includePaths.library = APPLICATION_PATH "/../library"
bootstrap.path = APPLICATION_PATH "/Bootstrap.php"
bootstrap.class = "Bootstrap"
appnamespace = "Application"
resources.view[] =
resources.view.helperPath.My_View_Helper = "../application/views/helpers"
resources.frontController.controllerDirectory = APPLICATION_PATH "/controllers"
resources.frontController.params.displayExceptions = 1
[staging : production]
[testing : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1
[development : production]
phpSettings.display_startup_errors = 1
phpSettings.display_errors = 1
resources.frontController.params.displayExceptions = 1
PHP应用更多关于zend相关内容感兴趣的读者可查看本站专题:《Zend FrameWork框架入门教程》、《php优秀开发框架总结》、《Yii框架入门及常用技巧总结》、《ThinkPHP入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》
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