AyaSoftware

For blocks and models (not controllers), the override is pretty simple. Unless you want to make a module portable to other projects, you can copy the model you want to override from core/ to local/..

So if you want, for example, override Mage_Directory_Model_Currency, you have to copy app/code/core/Mage/Directory/Model/Currency.php to app/code/local/Directory/Model/Currency.php, and make modifications to that local file or use the following XML configuration.

<?xml version="1.0"   ?>


  
    
      1.0
    
  
  
  
    
         
              
                    XLPages_currencymodule_Model_Currency
                
                           
     
    
    
    
		
			
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