Dispatch magento event with ajax

Question

I have a magento event 'payment_method_is_active' and I want to call event with ajax.How can I do?

UPDATE: I have an Observer :

<frontend>
 <events>
 <payment_method_is_active>
 <observers>
 <some_observer>
 <class>namespace/observer</class>
 <method>checkObserver</method>
 </some_observer>
 </observers>
 </payment_method_is_active>
 </events>
</frontend>

I want that event to be dispatch everytime I click in one field. for that I have an ajax function :

 jQuery.ajax({
 method: "POST",
 url: "/some/url"}).done(function() {
 jQuery('#fieldId').click(function(){
 //Here I want to dispatch 'payment_method_is_active' event
 });
});

• Rickert: could you please add more information, your question is not clear
• ana.coman93: Check my update.
• Rickert: may i ask why you want this?

Answer 1

You need to make ajax call to a custom controller action and do the dispatch event there as below:

In app/etc/modules/MyCompany_Ajax.xml

<config>
 <modules>
 <MyCompany_Ajax>
 <active>true</active>
 <codePool>local</codePool>
 </MyCompany_Ajax>
 </modules>
</config>

In app/etc/code/local/MyCompany/Ajax/etc/config.xml

<config>
 <modules>
 <MyCompany_Ajax>
 <version>1.0.0</version>
 </MyCompany_Ajax>
 </modules>
 <global>
 <frontend>
 <routers>
 <mycompanyajax>
 <use>standard</use>
 <args>
 <module>MyCompany_Ajax</module>
 <frontName>mycompanyajax</frontName>
 </args>
 </mycompanyajax>
 </routers>
 </frontend>
 </global>
</config>

In app/code/local/MyCompany/Ajax/controllers/AjaxController.php

<?php
class MyCompany_Ajax_AjaxController extends Mage_Core_Controller_Front_Action
{
 public function paymentAction()
 {
 $paymentMethodStatus = $this->getRequest()->getParam('is_active', false);
 //The $args variable may differ based on what values you are expecting in your observer.
 $args = array ('is_active', $paymentMethodStatus);
 Mage::dispatchEvent('payment_method_is_active', $args);
 }
}

In you template file:

$("#paymentCheckBox").live("click", function(){
 var isChecked = $(this).is(":checked");
 $.ajax({
 type: "POST",
 url: mycompanyajax/ajax/payment,
 data: { 'is_active' : isChecked},
 success: function(data) {
 //Handle if you return something
 },
 error: function() {
 alert('Something went wrong');
 },
 complete: function() {
 alert('Its done');
 }
 });
});