颤振使用多个模型与范围模型 [英] Flutter Using Multiple Models with Scoped Model

问题描述

我正在尝试在Flutter中构建Expense跟踪器应用程序，并决定使用范围模型进行状态管理.该应用程序有一个可以拥有多个帐户的用户，每个帐户可以具有许多交易.

I'm trying to build an Expense tracker App in Flutter and has decided to use Scoped Model for state management. The App has a User who can have many Accounts and each account can have many Transactions.

我如何对这些模型进行建模以与范围模型一起使用，我一直坚持选择好的架构.

How do I model these to be used with Scoped Model, I am stuck on selecting a good Architecture.

如果我创建的用户模型具有一个帐户列表，其中每个帐户都是一个帐户模型，则从AccountModel内部触发和更新不会触发那些访问UserModel类的帐户.

If I create a UserModel that has a list of Accounts where each Account is an AccountModel then triggering and update from inside AccountModel would not trigger the ones accessing the UserModel class.

推荐答案

class CombinedWidget extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final username =
      ScopedModel.of<UserModel>(context, rebuildOnChange: true).username;
    final counter =
      ScopedModel.of<CounterModel>(context, rebuildOnChange: true).counter;

    return Text('$username tapped the button $counter times');

  }
}

您可以在源中看到完整的示例.

you can see complete example in source .

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