Where are the Business Rules in MVC

asp.net-mvc model-view-controller business-rules
Scott and the Dev Team picture Scott and the Dev Team · Oct 17, 2008 · Viewed 10.5k times · Source

Now that everyone is talking about MVC, I notice that the business rules are not being addressed. In the old days of the 3-tier architecture, The business rules were in the middle layer. Where do they fall in the new MVC?

Answer

Haacked picture Haacked · Oct 17, 2008

The reason you never see MVC address "Business Rules" is that MVC by and large is a presentation pattern. It's focused on how to structure your application. The Model, for example, can be thought of as a presentation model. The model of your application, which the view then renders.

However, in order to create the presentation model, you generally need to go to your domain models where all your business logic lives. At that point, MVC doesn't dictate where that code physically live. Is it on another tier? MVC doesn't care.

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