《PHP應(yīng)用：Zend Framework自定義Helper類相關(guān)注意事項(xiàng)總結(jié)》要點(diǎn)：
本文介紹了PHP應(yīng)用：Zend Framework自定義Helper類相關(guān)注意事項(xiàng)總結(jié)，希望對(duì)您有用。如果有疑問(wèn)，可以聯(lián)系我們。
PHP應(yīng)用本文講述了Zend Framework自定義Helper類相關(guān)注意事項(xiàng).分享給大家供大家參考,具體如下：
PHP應(yīng)用編寫自定義的Helper類
PHP應(yīng)用編寫自定義的Helper類很容易,只要遵循以下幾個(gè)原則即可：
PHP應(yīng)用① 類名必須是 Zend_View_Helper_*,*是helper的名稱.例如,你在寫一個(gè)名為“specialPurpose”的類,類名將至少是"SpecialPurpose",另外你還應(yīng)該給類名加上前綴,建議將“View_Helper”作為前綴的一部份：“My_View_Helper_SpecialPurpose”.(注意大小寫)你將需要將前綴(不包含下劃線)傳遞給addHelperPath() 或 setHelperPath().
② 類中必須有一個(gè)public的辦法,該辦法名與helper類名相同.這個(gè)辦法將在你的模板調(diào)用"$this->specialPurpose()"時(shí)執(zhí)行.在我們的“specialPurpose”例子中,相應(yīng)的辦法聲明可以是 “public function specialPurpose()”.
③ 一般來(lái)說(shuō),Helper類不應(yīng)該echo或print或有其它形式的輸出.它只需要返回值就可以了.返回的數(shù)據(jù)應(yīng)當(dāng)被轉(zhuǎn)義.
④ 類文件的命名應(yīng)該是helper辦法的名稱,比如在"specialPurpose"例子中,文件要存為“SpecialPurpose.php”.
PHP應(yīng)用把helper類的文件放在你的helper路徑下, Zend_View就會(huì)自動(dòng)加載,實(shí)例化,持久化,并執(zhí)行.
PHP應(yīng)用三點(diǎn)類文件名稱,類名稱,類中helper辦法,保持某種程度上的一致.
PHP應(yīng)用貼代碼：
PHP應(yīng)用兩個(gè)helper,看清楚了,他們的不同啊.....
PHP應(yīng)用version?? zf 1.10
PHP應(yīng)用Bootstrap.php
PHP應(yīng)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應(yīng)用application/views/helpers
PHP應(yīng)用Img.php：
PHP應(yīng)用
class Zend_View_Helper_Img extends Zend_View_Helper_Abstract
{
public function img()
{
return "this is a img";
}
}
PHP應(yīng)用TestHelper.php：
PHP應(yīng)用
class My_View_Helper_TestHelper extends Zend_View_Helper_Abstract
{
public function testHelper()
{
return "this is a TestHelper";
}
}
PHP應(yīng)用action中使用：
PHP應(yīng)用
<?php echo $this->doctype() ?>
<?php echo $this->img() ?>
<?php echo $this->testHelper() ?>
PHP應(yīng)用附加內(nèi)容,在initView中添加addHelperPath,可以改成采用加載application.ini文件配置項(xiàng)的方式把路徑進(jìn)行配置.如下
PHP應(yīng)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應(yīng)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
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PHP應(yīng)用希望本文所述對(duì)大家PHP程序設(shè)計(jì)有所贊助.
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