php.MVC的模板标签系统(PhpMVC_Tags)现在提供了3种类型的标签:包含指令,声明和表达式.
包含指令能让我们将内容分隔为许多模块,比如:页眉,页脚或者内容.包含的页面可以是HTML,或者其他标签模板页.据个例子,下面的包含指令能用来包含一个页眉:
声明允许我们在模板种声明一个页面级别的变量,或者甚至其他包含页面.一个声明看起来像以下代码:
表达式标签允许我们在模板页中执行表达式.表达式的结果将被包含进模板页.以下表达式将被用来显示一个简单的字符串(salesAreaID),也可以找回框架配置类的属性:
PHP.MVC beta 0.4.0引进了一个新配置类叫做ViewResourcesConfig.这个类能被用来定义能被用在VIEW资源(模板)中的全局参数,并且也能去配置模板标签系统,它将在下面显示.phpmvc-config.xml配置文件中的view-resources元素在下面的显示:
copyright = "Copyright @ 2010 Flash Jack. All rights reserved."
contactInfo = "flash.jack@jackshost.com"
PRocessTags = "true"
compileAll = "true"
className = "MyViewResourcesConfig">
模板页面处理使用模板标签系统能被
processTags = "true"
compileAll = "true"
...
Action Dispatcher
PHP.MVC版本beta 0.4.0以上ActionDispatcher类用来负责使FormBean,Errors,Value(商务数据)和ViewResourcesConfig对象在我们的VIEW(模板)中可以使用.
在检查模板标签系统之前我们应该快速的看一下ActionObjects和ViewResourcesConfig类,当在使用标准的ActionDispatcher时.
ActionObjects
ActionDispatcher使一些对象在我们所使用的模板页面中的应用程序VIEW资源可用.3种标准的ActionObjects为:FormBean,Errors,和Value(商务数据)对象.
一下表格显示了在FormAction和Action类中如何使用FormBean,Errors和Value对象:
Saving ActionObjects in ActionForm Classes
ActionErrors $this->saveErrors($request, $actionErrors)
FormBeans $this->saveFormBean($request, $this)
ValueObjects $this->saveValueObject($request, $valueObject)
Saving ActionObjects in Action Classes
ActionErrors $this->saveErrors($request, $actionErrors)
FormBeans $this->saveFormBean($request, $form)
ValueObjects $this->saveValueObject($request, $valueObject)
Retrieving ActionObjects in View Resources (Templates)
ActionErrors $errors->getItemString('logon_username_reqd')
FormBeans $form->username
ValueObjects $data->salesNorth
一个ActionObject将被初始化为NULL如果对象没有在之前被创建和保存.要想得到ActionObjects的详细信息请看这里:http://www.phpmvc.net/docs/guides/guidesIdx.php?doc=action-objects
View Resources
ActionDispatcher也能暴露ViewResourcesConfig对象到我们的模板页面中.ViewResourcesConfig对象被phpmvc-config.xml配置文件中的
下面这段代码显示了使用模板标签系统的表达式在我们的HTML页眉模板中如何访问ViewResourcesConfig属性:
配置Action Dispatcher
ActionDispatcher是默认的PHP.MVC(在beta 0.4.0以上版本)Dispatcher类.这个Action Dispatcher被包含于框架将默认被使用,除非我们定义了一个类来替代Dispatcher类.在下一节中我们将看到怎样配置我们的应用程序来使用一个替代类--TagActionDispatcher类.

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