Using @select decorator with @Input #557

This is a...

• feature request
• bug report
• usage question

What toolchain are you using for transpilation/bundling?

• @angular/cli
• Custom @ngTools/webpack
• Raw ngc
• SystemJS
• Rollup
• Other

Environment

NodeJS Version: 10.15.1
Typescript Version: 3.2.2
Angular Version: 7.2.10
@angular-redux/store version: 9.0.0
@angular/cli version: (if applicable) 7.3.5
OS: macOS

Notes

I have a 'normalized' state shape where entities are indexed by id.

The entities are rendered in a list, which is controlled by a form of filters and sort options.

I'm using Epics to observe the form actions to update an array of filtered, sorted entity ids.

interface Entity {
  id: string,
  name: string
}

interface State {
  entities: { [id: string]: Entity },
  entityListIds: Array<string>
}

@Component({
  selector: 'entity-list',
  template: `
    <ng-container *ngIf="entityListIds$ | async as entityListIds;">
      <entity *ngFor="let entityId in entityListIds" [entityId]="entityId"></entity>  
    </ng-container>
  `
});
export class EntityListComponent {
  @select('entityListIds') entityListIds$: Observable<Array<string>>;
}

Can the EntityComponent use the entityId input with the @select decorator?

export class EntityComponent {
  @Input() entityId: string;
  @select(['entities', this.entityId]) entity$: Observable<Entity>;
}

I'm wondering if this is possible with instance methods/properties or if I have to inject the store. I'm also interested in scenarios where the input changes, and how to handle that with the select pattern.