如何在joomla 2.5中使用ajax在自定义模块的帮助文件中调用函数？

Question

i created a custom module with a custom form , i have a 2 dependent drop downs. i want to populate te drop down of second one based on first . But i am stuck with the url that must be specied to call the function when making ajax call

<script>
$(document).ready(function() {
     $( "#strCountry" ).change(function(){
          var id = $( "#strCountry option:selected" ).val();
          if(id>0){
              $.ajax({
                  url: "module=mycontact&task=getgetStates&country_id="+id,
                  success: function(responseText){
                         document.getElementById('strCountry').innerHTML=responseText;
                   }
              });
          }
     });
});
</script>

I am not talking about making call to component , its module ....... the url i specified above doesnt work , its showing a 404 error ....

Answer 1

If you are using Joomla 3 or newer version, you can use com_ajax . Here you can find more info about how to set up and use it http://docs.joomla.org/Using_Joomla_Ajax_Interface

Basically you need to have helper.php file in your module folder, with class named modMODULE_NAMEHelper and you can access it's methods via url: index.php?option=com_ajax&module=MODULE_NAME&method=METHOD_NAME

Please note, that MODULE_NAME is without mod_ prefix, you if your module called mod_mymodule , you should use mymodule .