Navigate with options in latest NativeScript with Angular and TypeScript

Question

I want to go to another page with options, but I can not find the documentation that explains this well. I use routes. Here is an example of my routes.

import { RouterConfig } from '@angular/router';
import { nsProvideRouter } from 'nativescript-angular/router';
import { MainPage } from './pages/main/main.component';
import { DetailsPage } from './pages/details/details.component';

export const routes: RouterConfig = [
    { path: "", component: MainPage },
    { path: "details", component: DetailsPage }
];

export const APP_ROUTER_PROVIDERS = [
    nsProvideRouter(routes, {})
];

I want to go to DetailsPage with the parameters of what was selected in MainPage. Here is an excerpt from MainPage:

import { Page } from 'ui/page';
import { Component, ElementRef, OnInit, ViewChild } from '@angular/core';
import { Entity } from '../../shared/entity/entity';

@Component({
    selector: "main",
    templateUrl: "pages/main/main.html",
    styleUrls: ["pages/main/main-common.css", "pages/main/main.css"]
})
export /**
 * MainPage
 */
class MainPage {

    constructor(private _page: Page, private _router: Router) { }

    onNavigate(selectedItem: Entity) {
        // Can't figure out how to get selectedItem to details…
        this._router.navigate(["/details"]);
    };
}

Insert: Below I have added a part class.

import { Component, OnInit, OnDestroy } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Entity } from '../../shared/entity/entity';
import { EntityModel } from '../../shared/entity/entity.model';

@Component({
    selector: "detail",
    templateUrl: "pages/detail/detail.html",
    styleUrls: ["pages/detail/detail-common.css", "pages/detail/detail.css"],
    providers: [EntityModel] 
})
export /**
 * DetailPage
 */
class DetailPage implements OnInit, OnDestroy {

    entity: Entity;

    private _paramSubcription: any;

    constructor( private _activatedRoute: ActivatedRoute, private _entityModel: EntityModel ) { }

    ngOnInit() {
        console.log("detail ngOnInit was called.");
        let entityName: string;
        this._paramSubcription = this._activatedRoute.params.subscribe(params => entityName = params['id']);
        this.entity = this._entityModel.entityNamed(entityName);
    };

    ngOnDestroy() {
        if (this._paramSubcription) {
            this._paramSubcription.unsubscribe();
        };
    };
}

Here is the template for Detail:

<ActionBar [title]="entity.name"></ActionBar>
<ListView [items]="entity.items">
    <Template let-item="item">
        <StackLayout>
            <Label [text]="item.name"></Label>
            <Label [text]="item.description"></Label>
        </StackLayout>
    </Template>
</ListView>

I found classes as NavigationContextwell as methods navigateToand navigateFrom, but I did not understand how to send NavigationContextto Page. Or if it even needs to be sent this way. So, the question is, what is the best way to use Routingto go to another page (rather than a dialog) and pass parameters?

Answer 1

, :

export const routes: RouterConfig = [
    { path: "", component: MainPage },
    { path: "details/:id", component: DetailsPage }
];

:

this._router.navigate(["/details", selectedItem.id]);

DetailsPage ActivatedRoute.