Where does input validation belong in an MVC appli

Question

I have a MVC application that receives an input from a form.
This is a login form so the only validation that is necessary is to check whether the input is non-empty.
Right now before I pass it to the model I validate it in the controller.
Is this a best practice or not? Does it belong to the model?

Answer 1

Assuming your application is structured like:

• Model-View-Controller
• Service
• Persistence
• Model

The user input would come to your controller, and you would use services in the service layer to validate it.