How to config routing Angular4 router

Question

Problem: I am configuring routes for my application. I want to have my url like https://localhost:4200/hero=id where id will be what ever user selects from Heroscomponent.This is not working for me.

if I try below url whose path is /hero/:id as per angular docs it works phonemically.

https://localhost:4200/hero/:id

Can some please provide me a solution to this problem.

This is my route config file where

 const appRoutes: Routes = [
  { path: 'hero', component: HeroesComponent },
  {path: 'hero{=:id}', component: HeroDetailComponent},
  {
    path: 'home',
    redirectTo: '/hero',
    data: { title: 'Heroes List' }
  },{
    path: 'student',
    component: AppTable
  },{
    path: 'video',
    component: VideoTagComponent
  },{ path: '',
    redirectTo: '/hero',
    pathMatch: 'full'
  }
  // { path: '**', component: PageNotFoundComponent }
];

Below is my HeroesComponent file where i am routing to path = "/hero="+id

import { Component } from '@angular/core';
import { Router } from '@angular/router';
import {Hero} from './hero';


const HEROES: Hero[] = [
  { id: 11, name: 'Mr. Nice' },
  { id: 12, name: 'Narco' },
  { id: 13, name: 'Bombasto' },
  { id: 14, name: 'Celeritas' },
  { id: 15, name: 'Magneta' },
  { id: 16, name: 'RubberMan' },
  { id: 17, name: 'Dynama' },
  { id: 18, name: 'Dr IQ' },
  { id: 19, name: 'Magma' },
  { id: 20, name: 'Tornado' }
];

@Component({
    selector: 'my-heroes',
    templateUrl: './heroes.html',
    styleUrls: ['./app.component.css']
})

export class HeroesComponent {
    hero = HEROES;
    path:string;
    selectedHero: Hero;

    constructor(private router: Router){}        

    onSelect(hero: Hero): void {
      this.selectedHero = hero;
      this.path = "/hero=" +this.selectedHero.id.toString();
      this.router.navigate([this.path]);
    }

    // gotoDetail(): void {
    // }
}

This is the error i am getting in the browser console.
core.es5.js:1020 ERROR Error: Uncaught (in promise): Error: Cannot match any routes. URL Segment: 'hero%3D13' Error: Cannot match any routes. URL Segment: 'hero%3D13'**strong text**

id routing using "=" is a requirement? – JayDeeEss Sep 19 '17 at 15:46 — JayDeeEss, Sep 19 '17 at 15:46
yes @JayDeeEss it's a requirement. – harsh Sep 20 '17 at 05:23 — harsh, Sep 20 '17 at 05:23

score 1 · Accepted Answer · answered Feb 27 '18 at 12:27

I found a solution to this problem.

Because Angular don't support this.. So, we can create a CustomUrlSerializer

   import { UrlSerializer, UrlTree, DefaultUrlSerializer } from '@angular/router';

export class CustomUrlSerializer implements UrlSerializer {
    public parse(url: any): UrlTree {
        let _serializer = new DefaultUrlSerializer();
        return _serializer.parse(url.replace('=', '%3D'));
    }

    public serialize(tree: UrlTree): any {     
        let _serializer = new DefaultUrlSerializer();
        let path = _serializer.serialize(tree);
        // use regex to replace as per the requirement.
        return path.replace(/%3D/g, '=');
    }
}

import this module where you are bootstrapping your AppComponent

import { CustomUrlSerializer } from 'file path';

@NgModule({
  bootstrap: [ AppComponent ],
  imports: [
  ],
  providers: [
    { provide: UrlSerializer, useClass: CustomUrlSerializer},

  ]
})

In Your routing module create a matcher for mapping the route.

export const ROUTES: Routes = [
  { matcher: pathMatcher, component: ComponetName},
  ];

const KEYWORD = /hero=([^?]*)/;


export function pathMatcher(url: UrlSegment[], group: UrlSegmentGroup, route: Route): any {
    if (url.length >= 1) {
        const [part1] = url
        if (part1.path.startsWith('hero')) {
            const [,keyword] = KEYWORD.exec(part1.path) || ['',''];
            let consumedUrl: UrlSegment[] = [];
            consumedUrl.push(url[0]);
            return {
                consumed: consumedUrl,
                posParams: { //The parameters if any you want to pass to ur component
                    heroId: new UrlSegment(keyword,{})
                }
            }
        }
    }
    return null
}

Now, In your component you can fetch the heroId by using

this.route.params.subscribe((params)=>{
          this.data = params['heroId'];
      })

where route is instance of ActivatedRoute

score 0 · Answer 2 · answered Sep 19 '17 at 15:48

0

Instead of {path: 'hero{=:id}', component: HeroDetailComponent},
use {path: 'hero/:id', component: HeroDetailComponent},
or {path: 'hero/:id/detail', component: HeroDetailComponent},.

According to angular documentation: you should create the path in that way: { path: 'hero/:id', component: HeroDetailComponent },

And in your HeroDetailComponent you'll be able to access the id in this way:

constructor(
  private route: ActivatedRoute,
  private router: Router,
  private service: HeroService
) {}

ngOnInit() {
  const hero = this.route.paramMap
    .switchMap((params: ParamMap) =>
      this.service.getHero(params.get('id')));
}

How to config routing Angular4 router

2 Answers2