miodi

Dependency Injection tools for Dart.

This library aims to easily manage dependencies in your business logic components.

The project is in beta testing, please write about all the errors found.

https://pub.dartlang.org/packages/miodi

Docs

  • factory and asyncFactory each time you call inject or injectAsync create a new instance.

  • singleton and asyncSingleton returns a single object instance, also guarantees that the object will be initialized only once.

  • component function to create MiodiComponent, you can also inherit from the class MiodiComponent if you want to expand its functionality.

  • module function to create MiodiModule, you can also inherit from the class MiodiModule if you want to expand its functionality

Example

Added example project. Pls check for future updates for more information. https://github.com/Miolin/miodi/tree/master/example

You can make an injection into the constructors of your objects, there are no restrictions.

Create component:



class AppComponent extends MiodiComponent {
  @override
  List<MiodiModule> get modules => [
        module(
          providers: [
            factory(
              UserController,
              () => UserController(get(name: currentUserProvider)),
            ),
          ],
        ),
        appModule,
        loggerModule,
        ExampleDependencyModule(get)
      ];
}

final appModule = module(
  providers: [
    singleton(User, () => User('0', 'currentUser'), name: currentUserProvider)
  ],
);

final loggerModule = LoggerModule();

typedef T DependencyProvider<T>();

class ExampleDependencyModule extends MiodiModule {
  final DependencyProvider<UserController> controllerProvider;

  ExampleDependencyModule(this.controllerProvider);

  @override
  List<AsyncProvider> get asyncProviders => [];

  @override
  List<Provider> get providers =>
      [factory(TestDependency, () => TestDependency(controllerProvider()))];
}


In the body of the component, use the get() method to get dependencies (from the current or other modules). You can use several components. You can also use the component's constructor to represent dependencies in modules.

Usage example:


void main() async {
  Miodi.init([AppComponent()]);
  final logger = await Miodi.injectAsync<Logger>();
  //or
  UserController controller = inject();

  final testDependency = inject<TestDependency>();
  
  logger.log('TestDependency  ${testDependency.controller.currentUser.name}');
}

Libraries

component
configuration
consts
errors
miodi
module
providers