swiftgenericsviper-architecture

VIPER architecture with generic protocols

I got an interesting question about the VIPER architecture and Generics protocol.

It seems that the Presenter and Interactor communicates a lot, (for fetching and receiving data), but the "Output" functions of the Interactor will always be the same

Something like:

func dataFetched(object: JSONObject)

And if you have 10 modules you'll have 10 times this function with only the JSONObject that change...

Is that possible to use something like

protocol Ouput {
  associatedType Object
  func dataFetched(object: Object)
}

And choose the type of Object in the presenter?

Solution

  • If JSONObject is an Entity presenter should not know about it. Instead, interactor should return pleomorphic type that can be converted to a ViewModel. And then presenter can pass this ViewModel to the view. So interactor output could look like: 

    func didFetched(object: ViewModelConvertible)