How to create event dispatcher in magento? [duplicate]

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Creating Hello world开发者_Go百科 event dispatcher(observer) in Magento?

Hi ,

In my Mage website i am in a situation to perform a set of tasks after a product being added to the shopping cart... i tried to create an event dispatcher, but not succeeded in it.

Can anyone give me info about step by step implementation of event dispatcher or any helpful link?

Thanks,

Balan

---

Step 1: define your module in /app/etc/module/Mycompany_Observer.xml:

<?xml version="1.0" encoding="utf-8"?>
<config>
    <modules>
        <Mycompany_Observer>
            <active>true</active>
            <codePool>local</codePool>
            <depends>
                <Mage_Core />
            </depends>
        </Mycompany_Observer>
    </modules>
</config>

Step 2: define your configuration in /app/code/local/Mycompany/Observer/etc/config.xml:

<?xml version="1.0" encoding="utf-8"?>
<config>
    <modules>
        <Mycompany_Observer>
            <version>0.1.0</version>
        </Mycompany_Observer>
    </modules>
    <global>
        <models>
            <myobserver>
                <class>Mycompany_Observer_Model</class>
            </myobserver>
        </models>
    </global>
    <frontend>
        <events>
            <add_to_cart_after>
                <observers>
                    <my_unique_identifier>
                        <type>singleton</type>
                        <class>myobserver/observer</class>
                        <method>myAddToCartAfter</method>
                    </my_unique_identifier>
                </observers>
            </add_to_cart_after>
        </events>
    </frontend>
</config>

Step 3: define your observer in /app/code/local/Mycompany/Observer/Model/Observer.php:

class Mycompany_Observer_Model_Observer extends Mage_Core_Model_Abstract
{
    public function myAddToCartAfter($oObserver)
    {
        var_dump($oObserver->getData());
        die('stop');
    }
}