A unique Angular service that is private and initialized with a specific parameter

Question

A unique Angular service that is private and initialized with a specific parameter

My Angular Service (myService) is injected into multiple components and services through their constructors.

I want each usage of myService to have its own instance to ensure no data is shared among them.

Additionally, I would like myService to be initialized with a specific parameter that defines its behavior. Is there a way to achieve this in Angular?

Any suggestions or solutions are greatly appreciated!

angular typescript dependency-injection

Answer 1

Answer №1

Include your service in the providers array of the component to create a unique service instance for each component instance. For example:

@Component({
  // ...
  providers: [MyService]
})
export class MyComponent  {
  // ...
}

You can also pass parameters to the service using a FactoryProvider. Example:

@Component({
  // ...
  providers: [
    {
      provide: MyService,
      useFactory: () => new MyService('param1') // create service with 'param1' for MyComponent instances
    }
  ]
})
export class MyComponent  {
  // ...
}

Answer 2

Include your service in the providers array of the component to create a unique service instance for each component instance. For example:

@Component({
  // ...
  providers: [MyService]
})
export class MyComponent  {
  // ...
}

You can also pass parameters to the service using a FactoryProvider. Example:

@Component({
  // ...
  providers: [
    {
      provide: MyService,
      useFactory: () => new MyService('param1') // create service with 'param1' for MyComponent instances
    }
  ]
})
export class MyComponent  {
  // ...
}

A unique Angular service that is private and initialized with a specific parameter

Answer №1

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