After adding <crontab> in my config.xml

Question

After adding <crontab></crontab> in mymodule's config.xml file I got error:

Fatal error: Class 'Mage_Mymodule_Helper_Data' not found in **/app/Mage.php on line 547

in my config.xml

<helpers>
    <mymodule>
     <class>Mypackage_Mymodule_Helper</class>
    </mymodule>
</helpers>

and cron tag

<crontab>
    <jobs>
      <mycron>
        <schedule><cron_expr>*/1 * * * *</cron_expr></schedule>
        <run><model>mymodule/observer::cancelOrders</model></run>
            </mycron>
    </crontab>

Please suggest in which direction i have to check the error. Thank you for help in adv..

Answer 1

app/etc/modules/Mypackage_Mymodule.xml

<?xml version="1.0"?>
    <config>
      <modules>
        <Mypackage_Mymodule>
          <active>true</active>
          <codePool>local</codePool>
          <version>0.1.0</version>
        </Mypackage_Mymodule>
      </modules>
    </config>

app/code/local/Mypackage/Mymodule/etc/config.xml

<?xml version="1.0"?>
<config>
  <modules>
    <Mypackage_Mymodule>
      <version>0.1.0</version>
    </Mypackage_Mymodule>
  </modules>
  <global>
    <helpers>
      <mymodule>
        <class>Mypackage_Mymodule_Helper</class>
      </mymodule>
    </helpers>
    <models>
      <mymodule>
        <class>Mypackage_Mymodule_Model</class>
      </mymodule>
    </models>
  </global>    
    <crontab>
        <jobs>            
            <mymodule_cancelorders>
                <schedule><cron_expr>*/1 * * * *</cron_expr></schedule>
                <run><model>mymodule/cron::cancelOrders</model></run>
            </mymodule_cancelorders>
        </jobs>
    </crontab>
</config> 

app/code/local/Mypackage/Mymodule/Helper/Data.php

class Mypackage_Mymodule_Helper_Data extends Mage_Core_Helper_Abstract
{
}

app/code/local/Mypackage/Mymodule/Model/Cron.php

class Mypackage_Mymodule_Model_Cron{    

        public function cancelOrders(){
            //do something
        } 
}

Answer 2

Remove following code from config.xml if you are not using any helper class method.

<helpers>
    <mymodule>
     <class>Mypackage_Mymodule_Helper</class>
    </mymodule>
</helpers>

or create Helper directory and inside that directory create Data.php

<?php
class Mypackage_Mymodule_Helper_Data extends Mage_Core_Helper_Abstract{

}

Answer 3

Here we can mention the config.xml file mention the following code

<config>
<crontab>
    <jobs>
        <my_cron>
            <schedule>
                <cron_expr>*/5 * * * *</cron_expr>
            </schedule>
            <run>
                <model>mymodule/observer::functionName</model>
            </run>
        </my_cron>
    </jobs>
</crontab>

Then call that function in observer.php file

class Firstname_MyModule_Model_Observer
{
  public function functionName()
  {
     // Do the operations here
  }
}

Answer 4

Below cronjob code will execute at 12:30PM every day.

<job name="test_customer_export" instance="Vendorname\modulename\Cron\Customer" method="execute">
    <schedule>30 12 * * *</schedule>
</job>

30 is minute 12 is hours