How to setup a cron job in Magento module?

Question

I wanted to setup a cron job inside my module. I followed the instructions on Magento wiki - how_to_setup_a_cron_job, but my cron job is simply not executing.

This is my config.xml (app/code/local/Roomstory/Invoice/etc/config.xml)

<?xml version="1.0"?>
<config>    
    <modules>
        <Roomstory_Invoice>
            <version>0.1.1</version>
        </Roomstory_Invoice>
    </modules>
<!-- -->
    <crontab>
        <jobs>
            <roomstoryinvoice_setstatus>
                <schedule><cron_expr>*/10 * * * *</cron_expr></schedule>
                <run><model>roomstory_invoice/setstatus::run</model></run>
            </roomstoryinvoice_setstatus>
        </jobs>
    </crontab>
</config>

And this is my class. (app/code/local/Roomstory/Invoice/Model/Setstatus.php)

<?php
class Roomstory_Invoice_Model_Setstatus {

  public function run() {
    return true;
  }

}
?>

I have installed a Cron Scheduler Module, which shows my cron job listed, but when I try to "run now" (for debugging), I get error -

Invalid callback: roomstory_invoice/setstatus::run does not exist

This something simple, after much trying, I am still not able to find the error. Please tell some other way to do it, or indicate the error in this code.

Thanks!

Answer 1

In your modules config.xml put the following:

<config>
    <global>
        <models>
            <roomstoryinvoicecron>
                <class>Roomstory_Invoice_Model</class>
            </roomstoryinvoicecron>                         
        </models>
    </global>
    <crontab>
        <jobs>
            <roomstoryinvoicecron>
                <schedule>
                    <cron_expr>*/10 * * * *</cron_expr>
                </schedule>
                <run>
                    <model>roomstoryinvoicecron/observer::setStatus</model>
                </run>
            </roomstoryinvoicecron>
        </jobs>
    </crontab>
</config>

In app/code/local/Roomstory/Invoice/Model/Observer.php add the following:

<?php
class Roomstory_Invoice_Model_Observer {
    public function setStatus() {
        Mage::log("WORKS!");
    }
}

Make sure logging is enabled and it should work, check the log to be sure ;)

Answer 2

Be sure to add Magento cron.sh file in crontab

crontab -e

*/5 * * * * /bin/sh /path-to-magento/cron.sh