How to set the popularity of a product to 100 automatically on creation

Question

At the moment I have a category of say 20 products and I have popularity on them all (they are all in a set order) If I then add a new product to this category, it sets the popularity of this new product to 0. I want to default the popularity of new products to 100.

How can I do this?

Answer 1

The perfect solution for this is to develop an Event-Observer module using the controller_action_postdispatch_adminhtml_catalog_product_save event which is fired on product save. Your Observer.php will then update the product's popularity, like this:

app/code/local/Namespace/Module/etc/config.xml:

...
<adminhtml>
    <events>
        <controller_action_postdispatch_adminhtml_catalog_product_save>
            <observers>
                <namespace_module>
                    <type>singleton</type>
                    <class>Namespace_Module_Model_Observer</class>
                    <method>updatePopularity</method>
                </namespace_module>
            </observers>
        </controller_action_postdispatch_adminhtml_catalog_product_save>
    </events>
</adminhtml>

And then in app/code/local/Namespace/Module/Model/Observer.php:

public function updatePopularity($observer){
    $product = $observer->getEvent()->getProduct();
    $product->setPopularity(100);
    $product->save();
}

Then you should be all set.