Sending an action with notifyListeners()

[brianegan]

Sending an action with notifyListeners()

[edodso2]

I appreciate the reply. I should have spent more time reading the source code. The User and Products model I came up with for the sake of this example but I could see that the pattern would be to provide the User model at the root of the app (assuming all the child widgets need it) then provide the Products model further down the widget tree where it is needed.

I have a lot of refactoring to do but I am confident about this approach now.

[brianegan]

Hey there -- since the Model class implements the Listenable interface from Flutter, which defines notifyListeners as a method that accepts no parameters, I'm not sure we can support this.

That said, I'm actually wondering: What's the benefit of combining the two models into one MainModel? If they were separate models, you would't have to worry about this particular challenge. Furthermore, if the UI only depends on the UserModel, you wouldn't want it to rebuild when the ProductsModel changes. Therefore, to solve that problem, this type of conditional logic would start to pop up more and more. In my opinion, it's just a bit simpler to keep the two Models properly separated.

If you need to access data from both models in your UI layer, you can still do that in your build methods by using a ScopedModelDescendant Widgets or the ScopedModel.of method.

Sure, you might need an extra ScopedModel Widget or two in your tree, but I think it makes almost everything else easier.