Example analysis of Yii2 using camel case naming to access controllers

yii2在使用的时候，访问控制器的时候，如果控制器的名称是驼峰命名法，那访问的url中要改成横线的形式。例如：

 }
//访问的时候就要www.test.com/room-update这样访问

最近在做某渠道的直连的时候，他们提供的文档上明确指出接口的形式：

刚开始以为YII2中肯定有这样的设置，然后就去google了下，发现都说不行，自己去看了下，果然，框架里面直接是写死的：（源码）\vendor\yiisoft\yii2\base\Controller.php

/**
     * Creates an action based on the given action ID.
     * The method first checks if the action ID has been declared in [[actions()]]. If so,
     * it will use the configuration declared there to create the action object.
     * If not, it will look for a controller method whose name is in the format of `actionXyz`
     * where `Xyz` stands for the action ID. If found, an [[InlineAction]] representing that
     * method will be created and returned.
     * @param string $id the action ID.
     * @return Action the newly created action instance. Null if the ID doesn't resolve into any action.     */
    public function createAction($id)
    {        if ($id === '') {            $id = $this->defaultAction;
        }        $actionMap = $this->actions();        if (isset($actionMap[$id])) {            return Yii::createObject($actionMap[$id], [$id, $this]);
        } elseif (preg_match('/^[a-z0-9\\-_]+$/', $id) && strpos($id, '--') === false && trim($id, '-') === $id) {            $methodName = 'action' . str_replace(' ', '', ucwords(implode(' ', explode('-', $id))));            if (method_exists($this, $methodName)) {                $method = new \ReflectionMethod($this, $methodName);                if ($method->isPublic() && $method->getName() === $methodName) {                    return new InlineAction($id, $this, $methodName);
                }
            }
        }        return null;
    }

这点有点low，不过问题倒不大，这个代码很容易理解，我们发现，其实如果在这个源码的基础上再加上一个else就可以搞定，但是还是不建议直接改源码。

由于我们的项目用的事yii2的advanced版本，并且里面有多个项目，还要保证其他项目使用正常（也就是个别的控制器才需要使用驼峰命名的方式访问），这也容易：

我们可以写个components处理：\common\components\zController.php

<?php/**
 * Created by PhpStorm.
 * User: Steven
 * Date: 2017/10/26
 * Time: 16:50 */namespace common\components;use \yii\base\Controller;use yii\base\InlineAction;class zController extends Controller   //这里需要继承自\yii\base\Controller{    /**
     * Author:Steven
     * Desc:重写路由，处理访问控制器支持驼峰命名法
     * @param string $id
     * @return null|object|InlineAction     */
    public function createAction($id)
    {        if ($id === &#39;&#39;) {            $id = $this->defaultAction;
        }        $actionMap = $this->actions();        if (isset($actionMap[$id])) {            return \Yii::createObject($actionMap[$id], [$id, $this]);
        } elseif (preg_match(&#39;/^[a-z0-9\\-_]+$/&#39;, $id) && strpos($id, &#39;--&#39;) === false && trim($id, &#39;-&#39;) === $id) {            $methodName = &#39;action&#39; . str_replace(&#39; &#39;, &#39;&#39;, ucwords(implode(&#39; &#39;, explode(&#39;-&#39;, $id))));            if (method_exists($this, $methodName)) {                $method = new \ReflectionMethod($this, $methodName);                if ($method->isPublic() && $method->getName() === $methodName) {                    return new InlineAction($id, $this, $methodName);
                }
            }
        } else {            $methodName = &#39;action&#39; . $id;            if (method_exists($this, $methodName)) {                $method = new \ReflectionMethod($this, $methodName);                if ($method->isPublic() && $method->getName() === $methodName) {                    return new InlineAction($id, $this, $methodName);
                }
            }
        }        return null;
    }
}

ok ,这就可以支持使用驼峰形式访问了，当然这个的形式很多，也可以写成一个控制器，然后其它控制器继承这个控制器就行了，但是原理是一样的

如果使用？ 是需要用驼峰命名形式访问的控制器中，继承下这个zController就可以了，

<?php/**
 * Created by PhpStorm.
 * User: Steven
 * Date: 2017/10/18
 * Time: 15:57 */namespace backend\modules\hotel\controllers;use yii\filters\AccessControl;use yii\filters\ContentNegotiator;use yii\web\Response;use common\components\zController;class QunarController extends zController{    public $enableCsrfValidation = false;    public function behaviors()
    {        $behaviors = parent::behaviors();        unset($behaviors[&#39;authenticator&#39;]);        $behaviors[&#39;corsFilter&#39;] = [            &#39;class&#39; => \yii\filters\Cors::className(),
            &#39;cors&#39; => [ // restrict access to
                &#39;Access-Control-Request-Method&#39; => [&#39;*&#39;], // Allow only POST and PUT methods
                &#39;Access-Control-Request-Headers&#39; => [&#39;*&#39;], // Allow only headers &#39;X-Wsse&#39;
                &#39;Access-Control-Allow-Credentials&#39; => true, // Allow OPTIONS caching
                &#39;Access-Control-Max-Age&#39; => 3600, // Allow the X-Pagination-Current-Page header to be exposed to the browser.
                &#39;Access-Control-Expose-Headers&#39; => [&#39;X-Pagination-Current-Page&#39;],
            ],
        ];        //配置ContentNegotiator支持JSON和XML响应格式
        /*$behaviors[&#39;contentNegotiator&#39;] = [
            &#39;class&#39; => ContentNegotiator::className(), &#39;formats&#39; => [
                &#39;application/xml&#39; => Response::FORMAT_XML
            ]
        ];*/
        $behaviors[&#39;access&#39;] = [            &#39;class&#39; => AccessControl::className(),
            &#39;rules&#39; => [
                [                    &#39;ips&#39; => [&#39;119.254.26.*&#39;, //去哪儿IP访问白名单
                        &#39;127.0.0.1&#39;,&#39;106.14.56.77&#39;,&#39;180.168.4.58&#39;  //蜘蛛及本地IP访问白名单
                    ], &#39;allow&#39; => true,
                ],
            ],
        ];        return $behaviors;
    }}?>

示例：

<span style="color: #008000">/*</span><span style="color: #008000">*
     * Author:Steven
     * Desc:酒店静态数据接口     </span><span style="color: #008000">*/</span>
    <span style="color: #0000ff">public</span> <span style="color: #0000ff">function</span><span style="color: #000000"> actiongetFullHotelInfo()
    {

    }</span>

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