扩展/覆盖Magento中的扩展 [英] Extending / overriding extension in Magento

问题描述

我安装了一个扩展，我想从我的模块中使用它的功能.该扩展中的postAction就是所有发生的地方.它使用youtube API检索视频信息，并将其保存在Magento EAV数据模型的多个表上.

我已经创建了一个功能模块，用于仅通过按钮和文本框发送一些搜索词来测试youtube API函数.但是现在我想使用扩展功能来自动执行该调用并填写必要的表，而不是手动执行我的代码中的所有操作.

因此，我需要(或想要?还是必须?)来设置对该postAction的调用，或者扩展或覆盖它.我在这里迷路了，我是Magento和PHP的新手，所以我不清楚该怎么做.

这是我要呼叫的班级:

/**
 * Youtube Upload Controller
 */
class AW_Vidtest_YoutubeController extends Mage_Core_Controller_Front_Action {
.....
}

其中包含postAction函数:

/**
 * Get customer video
 */
public function postAction() {
    $data = new Varien_Object($this->getRequest()->getPost());
....
}

我已经阅读了这些链接上的信息，但是我不清楚我必须做什么.遵循Observer模式?也许自己创建一个post调用，然后以某种方式添加$data结构，以便可以在该调用中使用它?谢谢

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已 这是我到目前为止所拥有的代码，并附有@Francesco的建议.函数printVideoEntry是从其他函数中调用的，每个函数中的printVideoEntry现在将遍历目录中的前3个产品.

<?php
class Dts_Videotestimonials_Model_SearchVideo extends Mage_Core_Model_Abstract
{
    public $search_term;
    private $productModel;

    function printVideoEntry($videoEntry, $_product, $tabs = "")
    {
        # get user data
        $user = Mage::getSingleton('admin/session');
        $userName = $user->getUser()->getFirstname();
        $userEmail = $user->getUser()->getEmail();
        $data = array(
            "ProductId" => $_product->getId(),
                        "AuthorEmail" => $userEmail,
                        "AuthorName" => $userName,
                        "VideoLink" => $videoEntry->getVideoWatchPageUrl(),
                        "VideoType"  => "link",
                        "Title" => $videoEntry->getVideoTitle(),
                        "Comment" => "this is a comment"
        );
        $actionUrl = Mage::getUrl('vidtest/youtube/post');
        Mage::app()->getResponse()->setRedirect($actionUrl, $data);
    }
}

解决方案

要给出明确的答案并不容易...问题尚不清楚，因为我们不知道youtube扩展程序是如何工作的. (代码是加密的还是开放的?)

调用控制者的操作

如果只想调用postAction，则可以使用_redirect($path, $arguments=array())方法. (在Mage/Core/Controller/Varien/Action.php中定义)

1. $path被定义为'moduleName/controllerName'
2. $arguments=array()定义为一对parameterName => Value.

例如.

$this->_redirect('checkout/cart', array('Pname' => $pValue, ... );

这仅在您从控制器调用时才有效...

您可以在此处找到有关_redirect的更多信息:>具有以下参数的magento _redirect +或/

如果要从模型或控制器的任何其他文件中进行重定向，则需要以这种方式调用url:

Mage::app()->getResponse()->setRedirect(Mage::getUrl($path, $arguments=array()));

所以上面的ex.成为:

Mage::app()->getResponse()->setRedirect(Mage::getUrl('checkout/cart', array('Pname' => $pValue, ... ));

观察者

使用观察者意味着向您的模块(观察者)添加一个新模型，并在此类内编写一个在某些事件下执行操作的方法，可能您想调用yt扩展的某些模型/方法.

然后，您必须在config.xml中声明这些东西，将您的观察者方法绑定到某个事件(甚至在Magento中适合您的任何预定义，或者如果需要，您应该创建自己的重写magento类...)

观察者示例

• PackageName/ModuleName/Model/Observer.php

  class PackageName_ModuleName_Model_Observer {
  
      public function myActionMethod(Varien_Event_Observer $observer) {
  
          // Code ... 
          // just a very indicative example
          $model = Mage::getModel('youtubeExtension/Model....').method();
  
      }
  
  }
  

• PackageName/ModuleName/etc/config.xml

  <config>
  ....
  <global>
      <events>
          <EventName>
              <observers>
                  <moduleName_observer>
                      <type>singleton</type>
                      <class>PackageName_ModuleName_Model_Observer</class>
                      <method>myActionMethod</method>
                  </moduleName_observer>                         
              </observers>
          </EventName>
      </events>
  </global>
  ....
  

显然要根据您的程序包/模块/方法名称更改EventName和所有假名称

最困难的是找到适合您的合适活动... 每当您在magento代码中看到诸如Mage::dispatchEvent('EventName', Parameters);之类的东西时，这都是一个事件.

您可以在默认的Magento事件列表中找到此处

希望对您有帮助

I have an extension installed and I want to use its funcionality from my modules. The postAction in that extension is where all happens. It uses youtube API to retrieve a video information and save it on several tables on the Magento EAV data model.

Already have a functional module that I created to test youtube API functions using just a button and a text box to send some search term. But now I want to do it automatically using the extension funcionalities to make that call and fill in the necessary tables instead of doing everything manually from my code.

So I need (or want? or must?) to setup a call to that postAction or extend or override it. I'm lost here, I'm new to Magento and PHP so I haven´t a clear idea on what to do.

This is the class I want to call:

/**
 * Youtube Upload Controller
 */
class AW_Vidtest_YoutubeController extends Mage_Core_Controller_Front_Action {
.....
}

And inside it the postAction function:

/**
 * Get customer video
 */
public function postAction() {
    $data = new Varien_Object($this->getRequest()->getPost());
....
}

I have read the information on these links but I'm not clear on what exactly I'm must do. Follow the Observer pattern? Maybe just creating a post call by myself and somehow adding the $data structure so it can be used on the call? Thanks

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Edited: This is the code I have until now, with suggestions made by @Francesco. The function printVideoEntry is called from other function, inside a for each that for now walks the first 3 products on the catalog.

<?php
class Dts_Videotestimonials_Model_SearchVideo extends Mage_Core_Model_Abstract
{
    public $search_term;
    private $productModel;

    function printVideoEntry($videoEntry, $_product, $tabs = "")
    {
        # get user data
        $user = Mage::getSingleton('admin/session');
        $userName = $user->getUser()->getFirstname();
        $userEmail = $user->getUser()->getEmail();
        $data = array(
            "ProductId" => $_product->getId(),
                        "AuthorEmail" => $userEmail,
                        "AuthorName" => $userName,
                        "VideoLink" => $videoEntry->getVideoWatchPageUrl(),
                        "VideoType"  => "link",
                        "Title" => $videoEntry->getVideoTitle(),
                        "Comment" => "this is a comment"
        );
        $actionUrl = Mage::getUrl('vidtest/youtube/post');
        Mage::app()->getResponse()->setRedirect($actionUrl, $data);
    }
}

解决方案

It is not easy to give a clear answer ... the question is not clear because we don't know how the youtube extension works. ( the code is crypted or open ? )

Call a Controller's Action

If you want to just call postAction you can use _redirect($path, $arguments=array()) method. ( defined in Mage/Core/Controller/Varien/Action.php )

1. $path is defined as 'moduleName/controllerName'
2. $arguments=array() are defined as couple parameterName => Value.

Ex.

$this->_redirect('checkout/cart', array('Pname' => $pValue, ... );

This will work only if you call it from a Controller ...

you can find more info about _redirect here: magento _redirect with parameters that have + or /

In case you want to do a redirection from a model or any different file form a Controller one you will need to call the url in this way :

Mage::app()->getResponse()->setRedirect(Mage::getUrl($path, $arguments=array()));

so the above ex. becames:

Mage::app()->getResponse()->setRedirect(Mage::getUrl('checkout/cart', array('Pname' => $pValue, ... ));

Observer

Using an Observer means add a new model to your module ( the observer ) and write inside this class a method that perform an action under certain events, probably you want to calls some model/method of the yt extension.

Then you have to declare this stuff in you config.xml binding you observer method to some event ( any predefined even in Magento that suit you or if you need you should create your own rewriting the magento class ... )

Example for Observer

• PackageName/ModuleName/Model/Observer.php

  class PackageName_ModuleName_Model_Observer {
  
      public function myActionMethod(Varien_Event_Observer $observer) {
  
          // Code ... 
          // just a very indicative example
          $model = Mage::getModel('youtubeExtension/Model....').method();
  
      }
  
  }
  

• PackageName/ModuleName/etc/config.xml

  <config>
  ....
  <global>
      <events>
          <EventName>
              <observers>
                  <moduleName_observer>
                      <type>singleton</type>
                      <class>PackageName_ModuleName_Model_Observer</class>
                      <method>myActionMethod</method>
                  </moduleName_observer>                         
              </observers>
          </EventName>
      </events>
  </global>
  ....
  

Obviously change EventName and all fake name according to your package/module/methods names

The most of the difficult is to find the right event that suit you ... Everytime you see in magento code something like Mage::dispatchEvent('EventName', Parameters); this is an event.

you can find a list of default Magento event Here

I hope it helps you

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