How override model in Magento correctly?

Question

guys.

I need to override 2 functions in different classes (CatalogSearch/Layer.php and CatalogSearch/Mysql4/Fulltext/Collection.php). So, I have a config file:

Answer 1

The resource models are probably handled separately, try this:

    
        
            
                My_Modulename_Model_CatalogSearch_Layer
            
        
        
            
                My_Modulename_Model_CatalogSearch_Mysql4_Fulltext_Collection