extends Mage_Catalog_Block_Product

Question

I need to extend getPriceHtml method of Mage_Catalog_Block_Products class.

Why? I need to change template for price only for my custom extension of RSS (Aph_Rss > works fine!). This extension use getPriceHtlmRss($product,true) new method, now I want extend getPriceHtml > getPriceHtmlRss to add inline css into price-last / special-price tag for email-marketing automation in specific template > priceRss.phtml

I've created Aph/Catalog/etc -> config.xml:

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <global>
        <blocks>
            <catalog>
                <rewrite>
                    <product>Aph_Catalog_Block_Product</product>
                </rewrite>
            </catalog>
        </blocks>
    </global>
</config>

Then created Aph/Catalog/Block/Product.php

<?php

include('Mage/Catalog/Block/Product.php');

class Aph_Catalog_Block_Product extends Mage_Catalog_Block_Product
{
    protected $_finalPrice = array();

    public function getPriceHtmlRss($product)
    {
        $this->setTemplate('catalog/product/priceRss.phtml');
        $this->setProduct($product);
        return $this->toHtml();
    }
}

Then created: app/design/frontend/default/mytheme/template/catalog/product/priceRss.phtml

Last step: Created file app/etc/modules/Aph_Catalog.xml

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

Visiting http://www.mydomain.tld/rss/catalog/category/cid/193/store_id/2/ -> no price shown. priceRss.phtml not loaded. Why?

Answer 1

You have rewrite Mage_Catalog_Block_Product class properly.

As per as my knowledge ,on www.mydomain.tld/rss page Mage_Catalog_Block_Product block class does not rendered.

Basically, www.mydomain.tld/rss page Mage_Rss_Block_List rendered.

Please check at rss.xml file for understand the layout of rss page at your theme layout folder app/design/frontend/YourPackage/YourTheme/layout.

Hope you will be understand.

Answer 2

Your question seems bit unclear for me. However check below points.

1. Your module should be depend upon Mage_Catalog module. You can do this via activation file of your module.

   File : app\etc\modules\Aph_Catalog.xml

   <config>
       <modules>
           <Aph_Catalog>
               <active>true</active>
               <codePool>local</codePool>
               <depends>
                   <Mage_Catalog/>
               </depends>
           </Aph_Catalog>
       </modules>
   </config>
   

2. Make sure your module resides in local codepool.ie at app\code\local.

3. You said you have a custom extension Aph_Rss. By it's name I assume it customized Magento's default RSS Module, ie Mage_Rss. You again said you have a problem with getPriceHtmlRss() which comes inside the custom extension Aph_Rss. If that is the case, you need to overwrite Aph_Rss block class not Mage_Catalog_Block_Product block class. If this is the case, then you need to provide more details on which block class in Aph_Rss holds the method getPriceHtmlRss() and give more details about that extension.