magento 设置全局变量或函数 (Session, Registry 和 Function)

最新推荐文章于 2019-05-05 20:36:00 发布

原创最新推荐文章于 2019-05-05 20:36:00 发布 · 272 阅读

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本文详细介绍了Magento中如何在会话中获取和设置变量、使用注册模式进行全局变量管理及创建全局函数的方法。通过实例展示了不同场景下这些功能的具体应用。

1. Magento: Get and set variables in session

To set a Magento session variable:

$myValue = 'Hello World';
Mage::getSingleton('core/session')->setMyValue($myValue);

To Retrieve:

$myValue = '';
$myValue=Mage::getSingleton('core/session')->getMyValue();

To Unset:

Mage::getSingleton('core/session')->unsMyValue();

或者

/* Core Session */ 
Mage::getSingleton('core/session')->setYourVariable('data');
$Data = Mage::getSingleton('core/session')->getYourVariable();
 
/* Customer Session */ 
Mage::getSingleton('customer/session')->setYourVariable('data');
$Data = Mage::getSingleton('customer/session')->getYourVariable();
 
/* Admin Session */ 
Mage::getSingleton('admin/session')->setYourVariable('data');
$Data = Mage::getSingleton('admin/session')->getYourVariable();

2. Magento’s Registry Pattern

The three registry methods are

Mage::register
Mage::unregister   
Mage::registry

The register method is how you set a global-like variable.

Mage::register('some_name', $var);

Then, later in the request execution, (from any method), you can fetch your variable back out

$my_var = Mage::registry('some_name');

Finally, if you want to make you variable unavailable, you can use the unregister method to remove it from the registry.

Mage::unregister('some_name');

3. Create Global Function In Magento

This code will allow you to add a function that can be called from anywhere within Magento. It extends the helper class

1) Create a file named ‘Mycode.xml’ and copy it to app/etc/modules/ – it should look like this:

<?xml version="1.0"?>
<config>
    <modules>
		<Mycode_Function>
			<active>true</active>
			<codePool>local</codePool>
		</Mycode_Function>
    </modules>
</config>

2) Create the directory app/code/local/Mycode/Function/etc and then create a file named ‘config.xml’ In it copy:

<?xml version="1.0"?>
<config>
 
    <modules>
        <Mycode_Function>
            <version>1.0.0</version>
        </Mycode_Function>
    </modules>
 
    <global>
 
        <helpers>
            <function>
                <class>Mycode_Function_Helper</class>
            </function>
        </helpers> 
 
    </global>
 
</config>

3) Create the directory app/code/local/Mycode/Function/Helper and then create a file named ‘Data.php’ In it copy:

<?php
 
class Mycode_Function_Helper_Data extends Mage_Core_Helper_Abstract
{
 
	public function test(){
 
	return 'works';
 
	}
 
}

You can now call this function like so

<?php 
 
	 echo Mage::helper('function')->test();
 
 ?>

来源： http://joe-riggs.com/blog/2011/06/create-global-function-in-magento/

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