Comments on: How to override a Magento core block class

By: anciwasim

anciwasim — Wed, 23 Jun 2010 12:34:48 +0000

Hello,

If i wanted to override method of continue shopping button, how can i do that.
Location : /app/core/Mage/Checkout/Block/Cart.php
public function getContinueShoppingUrl()
{
$url = $this->getData(’continue_shopping_url’);
if (is_null($url)) {
$url = Mage::getSingleton(’checkout/session’)->getContinueShoppingUrl(true);
if (!$url) {
$url = Mage::getUrl();
}
$this->setData(’continue_shopping_url’, $url);
}
return $url;
}

By: stef

stef — Mon, 14 Jun 2010 21:21:40 +0000

great tutorial but if you use Firebug, won’t all make it easier?

By: Vitaly

Vitaly — Thu, 27 May 2010 10:35:48 +0000

It works (!) with Magento 1.4.0.1.

But when I go to “Configuration->Advanced” and set “Disabled” for Fido_Catalog original Breadcrumbs does not appear.
So I can’t swith off this module. Why?..

By: Nikola

Nikola — Fri, 21 May 2010 22:01:40 +0000

It does not work in 1.4.1. I guess you can’t overwrite (untested) a block class that is created like this.
$this->getLayout()->createBlock(’catalog/breadcrumbs’);
Mage/Catalog/Block/Category/View.php
Mage/Catalog/Block/Product/View.php

By: jp

jp — Thu, 20 May 2010 17:49:20 +0000

How do I change the color of the breadcrumbs?

By: Name Paolo

Name Paolo — Tue, 20 Apr 2010 11:36:23 +0000

it’s impossible to override Mage_Core_Block_Template
this seems to be a special class
any ideas?
tell me if anyone can, pls…

By: Matt

Matt — Tue, 30 Mar 2010 09:33:07 +0000

Nice tutorial. How would you go about overriding Adminhtml/Block/Page.php, but not for all modules, just for one custom module?

By: justinjohnson.org

justinjohnson.org — Tue, 09 Mar 2010 06:12:12 +0000

Thank you so damn much. This worked perfectly for me when overwriting Mage_Catalog_Block_Navigation. One thing that still alludes me is the meaning in the structure in the etc/config.xml file. Namely, how would I set it up to overwrite Mage_Core_Model_Email_Template? I assume its something like this My_Core_Model_Email_Template but where do I put the file? Can it go in the same file that you described in step 2?

By: DarkGhostHunter

DarkGhostHunter — Thu, 18 Feb 2010 23:54:42 +0000

Note: I’t doesn’t work anymore with Magento 1.4.0

By: Zoran

Zoran — Fri, 29 Jan 2010 01:28:19 +0000

Thanks for the nice explanation.
What is the downside of overriding too many core files, is there an acceptable limit of working modullary by extending the core? Is using events observers methods easier and more flexible way of extending?