开始yaf之旅
目录结构
+ public <span //</span><span 网站根目录</span>
- index.php <span //</span><span 入口文件</span>
- .htaccess <span //</span><span 重写规则 </span>
+<span conf
</span>|- application.ini <span //</span><span 配置文件 </span>
application/
+<span controllers
</span>- Index.php <span //</span><span 默认控制器</span>
+<span views
</span>|+ index <span //</span><span 控制器</span>
- index.phtml <span //</span><span 默认视图</span>
+ modules <span //</span><span 其他模块</span>
- library <span //</span><span 组件目录</span>
- models <span //</span><span model目录</span>
- plugins <span //</span><span 插件目录</span>入口文件
入口文件是所有请求的入口, 一般都借助于rewrite规则, 把所有的请求都重定向到这个入口文件.
一个经典的入口文件public/index.php
<?<span php
</span><span define</span>("APP_PATH", <span realpath</span>(<span dirname</span>(<span __FILE__</span>) . '/../')); <span /*</span><span 指向public的上一级 </span><span */</span>
<span $app</span> = <span new</span> Yaf_Application(APP_PATH . "/conf/application.ini"<span );
</span><span $app</span>->run();重写规则
除非我们使用基于query string的路由协议(Yaf_Route_Simple, Yaf_Route_Supervar), 否则我们就需要使用WebServer提供的Rewrite规则, 把所有这个应用的请求, 都定向到上面提到的入口文件.
修改.htaccess文件
Nginx的Rewrite (nginx.conf)
<span server {
listen </span><span 80</span><span ;
server_name yaf.demo.com;
root document_root;
index index.php index.html index.htm;
</span><span if</span> (!-<span e $request_filename) {
rewrite </span>^/(.*) /index.php/$<span 1</span><span last;
}
}</span>配置文件
在Yaf中, 配置文件支持继承, 支持分节. 并对PHP的常量进行支持. 你不用担心配置文件太大造成解析性能问题, 因为Yaf会在第一个运行的时候载入配置文件, 把格式化后的内容保持在内存中. 直到配置文件有了修改, 才会再次载入.
一个简单的配置文件application/conf/application.ini
<span [common] application.directory </span>= APP_PATH <span "</span><span /application</span><span "</span><span application.dispatcher.catchException </span>= <span 0</span><span application.dispatcher.throwException </span>= <span 0</span><span application.view.ext </span>= <span '</span><span phtml</span><span '</span><span [product : common] ;enable the error controller application.dispatcher.catchException</span>=<span 1</span>
控制器
在Yaf中, 默认的模块/控制器/动作, 都是以Index命名的, 当然,这是可通过配置文件修改的.
对于默认模块, 控制器的目录是在application目录下的controllers目录下, Action的命名规则是"名字+Action"
默认控制器application/controllers/Index.php
<?<span php
</span><span class</span> IndexController <span extends</span><span Yaf_Controller_Abstract {
</span><span public</span> <span function</span> indexAction() {<span //</span><span 默认Action</span>
<span $this</span>->getView()->assign("content", "Hello World"<span );
}
}
</span>?>视图文件
Yaf支持简单的视图引擎, 并且支持用户自定义自己的视图引擎, 比如Smarty.
对于默认模块, 视图文件的路径是在application目录下的views目录中以小写的action名的目录中.
一个默认Action的视图application/views/index/index.phtml
<html> <head> <title>Hello yaf</title> </head> <body> <?php <span echo</span> <span $content</span>;?> </body> </html>
然后在浏览器输入nginx.conf设置的servername，
表 4.2. Yaf可选配置项
| 名称 | 值类型 | 默认值 | 说明 |
|---|---|---|---|
| application.ext | String | php | PHP脚本的扩展名 |
| application.bootstrap | String | Bootstrapplication.php | Bootstrap路径(绝对路径) |
| application.library | String | application.directory + "/library" | 本地(自身)类库的绝对目录地址 |
| application.baseUri | String | NULL | 在路由中, 需要忽略的路径前缀, 一般不需要设置, Yaf会自动判断. |
| application.dispatcher.defaultModule | String | index | 默认的模块 |
| application.dispatcher.throwException | Bool | True | 在出错的时候, 是否抛出异常 |
| application.dispatcher.catchException | Bool | False | 是否使用默认的异常捕获Controller, 如果开启, 在有未捕获的异常的时候, 控制权会交给ErrorController的errorAction方法, 可以通过$request->getException()获得此异常对象 |
| application.dispatcher.defaultController | String | index | 默认的控制器 |
| application.dispatcher.defaultAction | String | index | 默认的动作 |
| application.view.ext | String | phtml | 视图模板扩展名 |
| application.modules | String | Index | 声明存在的模块名, 请注意, 如果你要定义这个值, 一定要定义Index Module |
| application.system.* | String | * | 通过这个属性, 可以修改yaf的runtime configure, 比如application.system.lowcase_path, 但是请注意只有PHP_INI_ALL的配置项才可以在这里被修改, 此选项从2.2.0开始引入 |
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