Single model over multiple pages

[Ayush789]

How to use the same model in multiple pages

I am making a cryptocurrency app and following your provider guide 010 using get it
For the main page, I made a HomeModel class with a list of Coin instances and used it in dashboard page by using BaseView<HomeModel>.
Now, for adding another item to list in HomeModel I move on to another page add_coin where also I use BaseView<HomeModel>.
But here if I register it using locator.registerLazySingleton(()=>HomeModel()); it gives error HomeModel was used after being disposed.
And if I register it using factory it does not change the value in initial page

You can see the code here:
https://github.com/Ayush789/crypto_provider

[FilledStacks]

Don't use the same model for two views, you're not using the architecture correctly then. Each view has it's own model. Use a service to share your information.

Create an information service that's a singleton and keep your list of coins in there. In the AddCoin page call your function addCoin on your information service from the model. In your HomeModel get the coins from the information service. The service manages all your shared information the models should just use services to produce state.

[Ayush789]

Thank you.
Is there a general base info service that I can rely on. I am trying to use this system as a base for my upcoming projects.

[Ayush789]

Made an AllCoins repository class with all the global required things and put it under core > shared.
Registered it with the locator and used it in whatever page it was needed by calling through the locator.
It's working correctly.

Is that the correct approach?

[FilledStacks]

No there's no base info service. A service is just a plain class that performs logic. There's nothing to share between the services.

Yes, That's the approach you'd want to use. Models talk to service/repo and that's it. Any data shown is requested from the service/repo and displayed in the UI.