Overriding a controller or model

[derchris]

Hi,

a colleague of mine customized a shop for one of our clients. One of the things he did was to add a new column to the products table (for technical information) which can be edited in backend and will be shown in productdetails.
Since I want the shop to be upgradeable I tried to upgrade to the new version, nearly all customizations were lost.

So I read a lot about the templating and made an override for productdetails. But I still have problems: how can I override the model and the controller? I tried with the 3rd party "MVC Plugin" but it didn't work...

[K&K media production]

For this things your client should use custom fields. So he can add the technical information to each product. No new column or core hacks are necessary on this way.

[PRO]

this should be done with the "specification" plugin that comes standard with vmart.
Thats exactly what its for