Zend Framework动作助手Redirector用法实例详解
发布:smiling 来源: PHP粉丝网 添加日期:2021-07-13 14:53:08 浏览: 评论:0
本文实例讲述了Zend Framework动作助手Redirector用法,分享给大家供大家参考,具体如下:
Redirector 提供另一种实现方式,帮助程序重定向到内部或者外部页面;
转向器(Redirector)助手让你使用一个转向器对象帮助程序重定向到新的URL。与_redirect()方法相比,它具有多项优势。例如能够在转向器对象中预先配置整个站点的行为,或者使用与Zend_Controller_Action::_forward()相似的gotoSimple($action, $controller, $module, $params)接口。
转向器拥有影响重定向行为的大量方法:
setCode() 设置重定向过程中使用的HTTP响应码。
setExit() 在重定向后强制执行exit()方法。默认已设定。
setGotoSimple()设置默认的URL,当没有提供参数给gotoSimple()方法时转向该URL。可以使用类似Zend_Controller_Action::_forward()的API:setGotoSimple($action, $controller = null, $module = null, array $params = array());
setGotoRoute()设置基于一个注册路由器的URL,通过传入一个键/值数组和一个路由器名,它将根据路由器的类型和定义来组织URL。
setGotoUrl()设置默认的URL,当没有参数传入gotoUrl(),将使用该URL,接受单个URL字符串。
setPrependBase()在setGotoUrl()、gotoUrl()或者gotoUrlAndExit()指定的URL前面,加入请求对象的基地址(base URL)。
setUseAbsoluteUri()强制转向器在重定向时使用绝对的URI。当该选项设定后,将使用$_SERVER['HTTP_HOST']、 $_SERVER['SERVER_PORT']和 $_SERVER['HTTPS']以及重定向方法指定的URL,来形成一个完整的URI。该选项目前默认关闭,将来的版本可能会默认开启。
此外,转向器中还有大量方法来执行实际的重定向。
gotoSimple()使用setGotoSimple()(类似_forward()的API)来构建URL并执行重定向。
gotoRoute()使用setGotoRoute()(路由组装route-assembly)来构建URL并执行重定向。
gotoUrl()使用setGotoUrl() URL字符串)来构造URL并执行重定向。
最后,你可以在任何时刻使用getRedirectUrl()确定当前的重定向URL。
基础用例
Example #5 设定选项
这个例子改变了几个选项,包括设定重定向时使用的HTTP状态码为303,重定向时不默认退出,以及定义了默认的URL供重定向使用。
- class SomeController extends Zend_Controller_Action
- {
- /**
- * Redirector - defined for code completion
- *
- * @var Zend_Controller_Action_Helper_Redirector
- */
- protected $_redirector = null;
- public function init()
- {
- $this->_redirector = $this->_helper->getHelper('Redirector');
- // Set the default options for the redirector
- // Since the object is registered in the helper broker, these
- // become relevant for all actions from this point forward
- $this->_redirector->setCode(303)
- ->setExit(false)
- ->setGotoSimple("this-action",
- "some-controller");
- }
- public function myAction()
- {
- /* do some stuff */
- // Redirect to a previously registered URL, and force an exit
- // to occur when done:
- $this->_redirector->redirectAndExit();
- return; // never reached
- }
- }
Example #6 使用默认设定
这个例子假定使用默认设定,也就意味着任何重定向将导致立即退出。
- // ALTERNATIVE EXAMPLE
- class AlternativeController extends Zend_Controller_Action
- {
- /**
- * Redirector - defined for code completion
- *
- * @var Zend_Controller_Action_Helper_Redirector
- */
- protected $_redirector = null;
- public function init()
- {
- $this->_redirector = $this->_helper->getHelper('Redirector');
- }
- public function myAction()
- {
- /* do some stuff */
- $this->_redirector
- ->gotoUrl('/my-controller/my-action/param1/test/param2/test2');
- return; // never reached since default is to goto and exit
- }
- }
Example #7 使用goto()的_forward()API
gotoSimple()'s API 模拟了Zend_Controller_Action::_forward()。主要的不同在于它通过传入的参数构造URL,使用默认路由器的默认格式:module/:controller/:action/*。然后重定向而不是继续动作链循环。
- class ForwardController extends Zend_Controller_Action
- {
- /**
- * Redirector - defined for code completion
- *
- * @var Zend_Controller_Action_Helper_Redirector
- */
- protected $_redirector = null;
- public function init()
- {
- $this->_redirector = $this->_helper->getHelper('Redirector');
- }
- public function myAction()
- {
- /* do some stuff */
- // Redirect to 'my-action' of 'my-controller' in the current
- // module, using the params param1 => test and param2 => test2
- $this->_redirector->gotoSimple('my-action',
- 'my-controller',
- null,
- array('param1' => 'test',
- 'param2' => 'test2'
- )
- );
- }
- }
Example #8 通过gotoRoute()使用路由组装(route assembly)
下面的例子使用了路由器的assemble()方法,基于传入参数的关联数组来创建URL,假定下面的路由已经注册:
- $route = new Zend_Controller_Router_Route(
- 'blog/:year/:month/:day/:id',
- array('controller' => 'archive',
- 'module' => 'blog',
- 'action' => 'view')
- );
- $router->addRoute('blogArchive', $route);
给定一个数组,其中年份为2006,月份为4,日期为24,id为42,据此可以组装URL/blog/2006/4/24/42。
- class BlogAdminController extends Zend_Controller_Action
- {
- /**
- * Redirector - defined for code completion
- *
- * @var Zend_Controller_Action_Helper_Redirector
- */
- protected $_redirector = null;
- public function init()
- {
- $this->_redirector = $this->_helper->getHelper('Redirector');
- }
- public function returnAction()
- {
- /* do some stuff */
- // Redirect to blog archive. Builds the following URL:
- // /blog/2006/4/24/42
- $this->_redirector->gotoRoute(
- array('year' => 2006,
- 'month' => 4,
- 'day' => 24,
- 'id' => 42),
- 'blogArchive'
- );
- }
- }
Zend_Controller_Action_Helper_Redirector的源码。
通过源代码不难看出实现方法,以及常见的使用方法。
- <?php
- /**
- * @see Zend_Controller_Action_Helper_Abstract
- */
- require_once 'Zend/Controller/Action/Helper/Abstract.php';
- /**
- * @category Zend
- * @package Zend_Controller
- * @subpackage Zend_Controller_Action_Helper
- * @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- */
- class Zend_Controller_Action_Helper_Redirector extends Zend_Controller_Action_Helper_Abstract
- {
- /**
- * HTTP status code for redirects
- * @var int
- */
- protected $_code = 302;
- /**
- * Whether or not calls to _redirect() should exit script execution
- * @var boolean
- */
- protected $_exit = true;
- /**
- * Whether or not _redirect() should attempt to prepend the base URL to the
- * passed URL (if it's a relative URL)
- * @var boolean
- */
- protected $_prependBase = true;
- /**
- * Url to which to redirect
- * @var string
- */
- protected $_redirectUrl = null;
- /**
- * Whether or not to use an absolute URI when redirecting
- * @var boolean
- */
- protected $_useAbsoluteUri = false;
- /**
- * Whether or not to close the session before exiting
- * @var boolean
- */
- protected $_closeSessionOnExit = true;
- /**
- * Retrieve HTTP status code to emit on {@link _redirect()} call
- *
- * @return int
- */
- public function getCode()
- {
- return $this->_code;
- }
- /**
- * Validate HTTP status redirect code
- *
- * @param int $code
- * @throws Zend_Controller_Action_Exception on invalid HTTP status code
- * @return true
- */
- protected function _checkCode($code)
- {
- $code = (int)$code;
- if ((300 > $code) || (307 < $code) || (304 == $code) || (306 == $code)) {
- require_once 'Zend/Controller/Action/Exception.php';
- throw new Zend_Controller_Action_Exception('Invalid redirect HTTP status code (' . $code . ')');
- }
- return true;
- }
- /**
- * Retrieve HTTP status code for {@link _redirect()} behaviour
- *
- * @param int $code
- * @return Zend_Controller_Action_Helper_Redirector Provides a fluent interface
- */
- public function setCode($code)
- {
- $this->_checkCode($code);
- $this->_code = $code;
- return $this;
- }
- /**
- * Retrieve flag for whether or not {@link _redirect()} will exit when finished.
- *
- * @return boolean
- */
- public function getExit()
- {
- return $this->_exit;
- }
- /**
- * Retrieve exit flag for {@link _redirect()} behaviour
- *
- * @param boolean $flag
- * @return Zend_Controller_Action_Helper_Redirector Provides a fluent interface
- */
- public function setExit($flag)
- {
- $this->_exit = ($flag) ? true : false;
- return $this;
- }
- /**
- * Retrieve flag for whether or not {@link _redirect()} will prepend the
- * base URL on relative URLs
- *
- * @return boolean
- */
- public function getPrependBase()
- {
- return $this->_prependBase;
- }
- /**
- * Retrieve 'prepend base' flag for {@link _redirect()} behaviour
- *
- * @param boolean $flag
- * @return Zend_Controller_Action_Helper_Redirector Provides a fluent interface
- */
- public function setPrependBase($flag)
- {
- $this->_prependBase = ($flag) ? true : false;
- return $this;
- }
- /**
- * Retrieve flag for whether or not {@link redirectAndExit()} shall close the session before
- * exiting.
- *
- * @return boolean
- */
- public function getCloseSessionOnExit()
- {
- return $this->_closeSessionOnExit;
- }
- /**
- * Set flag for whether or not {@link redirectAndExit()} shall close the session before exiting.
- *
- * @param boolean $flag
- * @return Zend_Controller_Action_Helper_Redirector Provides a fluent interface
- */
- public function setCloseSessionOnExit($flag)
- {
- $this->_closeSessionOnExit = ($flag) ? true : false;
- return $this;
- }
- /**
- * Return use absolute URI flag
- *
- * @return boolean
- */
- public function getUseAbsoluteUri()
- {
- return $this->_useAbsoluteUri;
- }
- /**
- * Set use absolute URI flag
- *
- * @param boolean $flag
- * @return Zend_Controller_Action_Helper_Redirector Provides a fluent interface
- */
- public function setUseAbsoluteUri($flag = true)
- {
- $this->_useAbsoluteUri = ($flag) ? true : false;
- return $this;
- }
- /**
- * Set redirect in response object
- *
- * @return void
- */
- protected function _redirect($url)
- {
- if ($this->getUseAbsoluteUri() && !preg_match('#^(https?|ftp)://#', $url)) {
- $host = (isset($_SERVER['HTTP_HOST'])?$_SERVER['HTTP_HOST']:'');
- $proto = (isset($_SERVER['HTTPS'])&&$_SERVER['HTTPS']!=="off") ? 'https' : 'http';
- $port = (isset($_SERVER['SERVER_PORT'])?$_SERVER['SERVER_PORT']:80);
- $uri = $proto . '://' . $host;
- if ((('http' == $proto) && (80 != $port)) || (('https' == $proto) && (443 != $port))) {
- // do not append if HTTP_HOST already contains port
- if (strrchr($host, ':') === false) {
- $uri .= ':' . $port;
- }
- }
- $url = $uri . '/' . ltrim($url, '/');
- }
- $this->_redirectUrl = $url;
- $this->getResponse()->setRedirect($url, $this->getCode());
- }
- /**
- * Retrieve currently set URL for redirect
- *
- * @return string
- */
- public function getRedirectUrl()
- {
- return $this->_redirectUrl;
- }
- /**
- * Determine if the baseUrl should be prepended, and prepend if necessary
- *
- * @param string $url
- * @return string
- */
- protected function _prependBase($url)
- {
- if ($this->getPrependBase()) {
- $request = $this->getRequest();
- if ($request instanceof Zend_Controller_Request_Http) {
- $base = rtrim($request->getBaseUrl(), '/');
- if (!emptyempty($base) && ('/' != $base)) {
- $url = $base . '/' . ltrim($url, '/');
- } else {
- $url = '/' . ltrim($url, '/');
- }
- }
- }
- return $url;
- }
- /**
- * Set a redirect URL of the form /module/controller/action/params
- *
- * @param string $action
- * @param string $controller
- * @param string $module
- * @param array $params
- * @return void
- */
- public function setGotoSimple($action, $controller = null, $module = null, array $params = array())
- {
- $dispatcher = $this->getFrontController()->getDispatcher();
- $request = $this->getRequest();
- $curModule = $request->getModuleName();
- $useDefaultController = false;
- if (null === $controller && null !== $module) {
- $useDefaultController = true;
- }
- if (null === $module) {
- $module = $curModule;
- }
- if ($module == $dispatcher->getDefaultModule()) {
- $module = '';
- }
- if (null === $controller && !$useDefaultController) {
- $controller = $request->getControllerName();
- if (emptyempty($controller)) {
- $controller = $dispatcher->getDefaultControllerName();
- }
- }
- $params[$request->getModuleKey()] = $module;
- $params[$request->getControllerKey()] = $controller;
- $params[$request->getActionKey()] = $action;
- $router = $this->getFrontController()->getRouter();
- $url = $router->assemble($params, 'default', true);
- $this->_redirect($url);
- }
- /**
- * Build a URL based on a route
- *
- * @param array $urlOptions
- * @param string $name Route name
- * @param boolean $reset
- * @param boolean $encode
- * @return void
- */
- public function setGotoRoute(array $urlOptions = array(), $name = null, $reset = false, $encode = true)
- {
- $router = $this->getFrontController()->getRouter();
- $url = $router->assemble($urlOptions, $name, $reset, $encode);
- $this->_redirect($url);
- }
- /**
- * Set a redirect URL string
- *
- * By default, emits a 302 HTTP status header, prepends base URL as defined
- * in request object if url is relative, and halts script execution by
- * calling exit().
- *
- * $options is an optional associative array that can be used to control
- * redirect behaviour. The available option keys are:
- * - exit: boolean flag indicating whether or not to halt script execution when done
- * - prependBase: boolean flag indicating whether or not to prepend the base URL when a relative URL is provided
- * - code: integer HTTP status code to use with redirect. Should be between 300 and 307.
- *
- * _redirect() sets the Location header in the response object. If you set
- * the exit flag to false, you can override this header later in code
- * execution.
- *
- * If the exit flag is true (true by default), _redirect() will write and
- * close the current session, if any.
- *
- * @param string $url
- * @param array $options
- * @return void
- */
- public function setGotoUrl($url, array $options = array())
- {
- // prevent header injections
- $url = str_replace(array("\n", "\r"), '', $url);
- if (null !== $options) {
- if (isset($options['exit'])) {
- $this->setExit(($options['exit']) ? true : false);
- }
- if (isset($options['prependBase'])) {
- $this->setPrependBase(($options['prependBase']) ? true : false);
- }
- if (isset($options['code'])) {
- $this->setCode($options['code']);
- }
- }
- // If relative URL, decide if we should prepend base URL
- if (!preg_match('|^[a-z]+://|', $url)) {
- $url = $this->_prependBase($url);
- }
- $this->_redirect($url);
- }
- /**
- * Perform a redirect to an action/controller/module with params
- *
- * @param string $action
- * @param string $controller
- * @param string $module
- * @param array $params
- * @return void
- */
- public function gotoSimple($action, $controller = null, $module = null, array $params = array())
- {
- $this->setGotoSimple($action, $controller, $module, $params);
- if ($this->getExit()) {
- $this->redirectAndExit();
- }
- }
- /**
- * Perform a redirect to an action/controller/module with params, forcing an immdiate exit
- *
- * @param mixed $action
- * @param mixed $controller
- * @param mixed $module
- * @param array $params
- * @return void
- */
- public function gotoSimpleAndExit($action, $controller = null, $module = null, array $params = array())
- {
- $this->setGotoSimple($action, $controller, $module, $params);
- $this->redirectAndExit();
- }
- /**
- * Redirect to a route-based URL
- *
- * Uses route's assemble method tobuild the URL; route is specified by $name;
- * default route is used if none provided.
- *
- * @param array $urlOptions Array of key/value pairs used to assemble URL
- * @param string $name
- * @param boolean $reset
- * @param boolean $encode
- * @return void
- */
- public function gotoRoute(array $urlOptions = array(), $name = null, $reset = false, $encode = true)
- {
- $this->setGotoRoute($urlOptions, $name, $reset, $encode);
- if ($this->getExit()) {
- $this->redirectAndExit();
- }
- }
- /**
- * Redirect to a route-based URL, and immediately exit
- *
- * Uses route's assemble method tobuild the URL; route is specified by $name;
- * default route is used if none provided.
- *
- * @param array $urlOptions Array of key/value pairs used to assemble URL
- * @param string $name
- * @param boolean $reset
- * @return void
- */
- public function gotoRouteAndExit(array $urlOptions = array(), $name = null, $reset = false)
- {
- $this->setGotoRoute($urlOptions, $name, $reset);
- $this->redirectAndExit();
- }
- /**
- * Perform a redirect to a url
- *
- * @param string $url
- * @param array $options
- * @return void
- */
- public function gotoUrl($url, array $options = array())
- {
- $this->setGotoUrl($url, $options);
- if ($this->getExit()) {
- $this->redirectAndExit();
- }
- }
- /**
- * Set a URL string for a redirect, perform redirect, and immediately exit
- *
- * @param string $url
- * @param array $options
- * @return void
- */
- public function gotoUrlAndExit($url, array $options = array())
- {
- $this->setGotoUrl($url, $options);
- $this->redirectAndExit();
- }
- /**
- * exit(): Perform exit for redirector
- *
- * @return void
- */
- public function redirectAndExit()
- {
- if ($this->getCloseSessionOnExit()) {
- // Close session, if started
- if (class_exists('Zend_Session', false) && Zend_Session::isStarted()) {
- Zend_Session::writeClose();
- } elseif (isset($_SESSION)) {
- session_write_close();
- }
- }
- $this->getResponse()->sendHeaders();
- exit();
- }
- /**
- * direct(): Perform helper when called as
- * $this->_helper->redirector($action, $controller, $module, $params)
- *
- * @param string $action
- * @param string $controller
- * @param string $module
- * @param array $params
- * @return void
- */
- public function direct($action, $controller = null, $module = null, array $params = array())
- {
- $this->gotoSimple($action, $controller, $module, $params);
- }
- /**
- * Overloading
- *
- * Overloading for old 'goto', 'setGoto', and 'gotoAndExit' methods
- *
- * @param string $method
- * @param array $args
- * @return mixed
- * @throws Zend_Controller_Action_Exception for invalid methods
- */
- public function __call($method, $args)
- {
- $method = strtolower($method);
- if ('goto' == $method) {
- return call_user_func_array(array($this, 'gotoSimple'), $args);
- }
- if ('setgoto' == $method) {
- return call_user_func_array(array($this, 'setGotoSimple'), $args);
- }
- if ('gotoandexit' == $method) {
- return call_user_func_array(array($this, 'gotoSimpleAndExit'), $args);
- }
- require_once 'Zend/Controller/Action/Exception.php';
- throw new Zend_Controller_Action_Exception(sprintf('Invalid method "%s" called on redirector', $method));
- }
- }
Tags: Framework Redirector
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