Where do I put my business logic in mvc?

Question

Hi I have seen many articles says that you to put the business logic in the model. however If i use the business logic in controller what will be the problem occur. if i use business logic in model then database layer where should i use. Thanks

Pradeep Sahoo · Answer

Controller action takes the request  process it and returns the required results in action result . The purpose o controller is not to handle any business logic . The purpose of mvc is separation of controller model view . Controller process the request  model is a place holder of data  contain the business logic  view contain the UI look and fill. For putting the business logic you can have a repository or business layer code which will process the data and assign it to the model . If you place business logic in controller it will be difficult to maintain difficult to unit test the controller code .

Salman · Answer

Hi. Basically the business logic will be present in model but still we can use repository which will be better. But i recommend to use repository approach. thanks.