i want rewrite magento helper core class Mage_Core_Helper_Data
.
I have try below code, but it is not working
<?xml version="1.0" ?>
<config>
<global>
...
<helpers>
<csscompresser>
<class>Amit_CssCompresser_Helper</class>
</csscompresser>
<core>
<rewrite>
<data>Amit_CssCompresser_Helper_Core_Data</data>
</rewrite>
</core>
</helpers>
...
</global>
<config>
Can any one tell why is not working?
Best Answer
When you rewrite a helper class, it will only take effect when you use
Mage::helper('...')
.However, most helper classes extend from
Mage_Core_Helper_Data
directly and then, the original class is used :(For example:
If you want to rewrite such a class in all cases, you can use the ugly method to copy it into
app/code/local/Mage/Core/Helper/Data.php
and do your edits there.It is not nice style, but if you want to extend a class very high up in the hierarchy, you have no other choice as far as I know.