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Yii2.0 creates a custom component method

Jan 03, 2017 am 09:38 AM

下面是Yii2.0如何创建一个自定义组件的实例

第一步:在common下创建components文件夹

第二步: 在新建的components文件夹中创建一个自定义组件 比如:ReadHttpHeader.php,代码如下

) as $ip) {
                    if (filter_var($ip, FILTER_VALIDATE_IP) !== false) {
                        return $ip;
                    }
                }
            }
        }
    }
 
}

注意: 'common' 已经在 common/config/bootstrap.php定义好了别名,可以直接使用

第三步:打开common/config/main.php(main-local.php) 在配置文件中添加你的组件

<?php
 
return [
          &#39;components&#39; => [
                    &#39;ReadHttpHeader&#39; => [
                              &#39;class&#39; => &#39;commoncomponentsReadHttpHeader&#39;
                    ],
          ],
 ];

第四步:现在我们的组件方法可以被所有控制器调用,比如我们现在在我们的基础控制器(BaseController)中加载我们的组件ReadHttpHeader ,其他控制器都继承我们的基础控制器

<?php
 
namespace frontendcontrollers;
 
use Yii;
use yiiwebController; 
class BaseController extends Controller {
 
    protected $session = false;
 
    public function actions() {
        return [
                  &#39;error&#39; => [
                            &#39;class&#39; => &#39;yiiwebErrorAction&#39;,
                  ],
        ];
    }
 
    public function init() {
 
        parent::init();
 
        // IP essential for prelim DDoS check
        if (!$this->cgS(&#39;UC-SEC.1a&#39;)) {
            $ip = Yii::$app->ReadHttpHeader->RealIP();
            echo $ip;
        }
    }
 
}
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