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I need to override one function from the following file:
Mage/Adminhtml/Block/Widget/Grid/Massaction/Abstract.php
The function that needs to be overriden is getJavaScript().
I have tried at least three different solutions from SE, however, none of them seemed to produce any outcome.
Abstract class cannot be override in magento.
If you want to change the code in Abstract class, There will be a solution that
Copy your file to local codePool.
Just copy
app/code/core/Mage/Adminhtml/Block/Widget/Grid/Massaction/Abstract.php
to
app/code/local/Mage/Adminhtml/Block/Widget/Grid/Massaction/Abstract.php
and make changes at that local file
You can't rewrite an abstract class because is not instantiated. The rewrite system works because Magento uses a factory pattern to instantiate model, blocks, and helpers
The solution is you should to override and not rewrite so you copy the file from a core to local codepool.
Copy this file from core/Mage/Adminhtml/Block/Widget/Grid/Massaction/Abstract.php to local/Mage/Adminhtml/Block/Widget/Grid/Massaction/Abstract.php and edit the function in the local copy.
