I am trying to understand how custom modules in magento work.
So, the models are for MySQL 4 and 5. But I don’t understand some things happening in it.
I looked at the CatalogSearch module under /code/core/Mage/CatalogSearch/
1. Are MySQL 4 and 5 so different that we need two different models?
2. Why are MySQL 5 models all in one directory as .php files, and MySQL 4 models in different directories each?
3. If you look at the CatalogSearch example - I _DON’T_ understand how these models work. The helper uses function from the MySQL 4 and 5 models?
Are there any tutorials or explanations out there which can tell me how to use these models, understanding them?
Hope somebody can help me