Configuring routes for Angular4 router is a vital step in creating a

Question

Configuring routes for Angular4 router is a vital step in creating a

Issue: I am currently setting up routes for my application, aiming to structure the URL as https://localhost:4200/hero=id, where the 'id' will be dynamically selected. However, this setup is not functioning as expected.

If I attempt to use a URL with the path /hero/:id as recommended in Angular documentation, it works perfectly.

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

I require assistance in finding a solution to this dilemma.

Below is an excerpt from my route configuration file:

 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 }
];

Additionally, here is a snippet of my HeroesComponent file demonstrating how I'm routing to path = "/hero="+id:

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

// Array of hero objects
const HEROES: Hero[] = [
  ...
];

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

export class HeroesComponent {
    ...
}

Upon inspection, I've encountered the following error 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'

javascript angular typescript angular4-router

Answer 1

Answer №1

I managed to find a resolution to this issue.

Due to Angular's lack of support for this feature, 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);
        // utilize regex to replace as needed.
        return path.replace(/%3D/g, '=');
    }
}

Import this module when bootstrapping your AppComponent

import { CustomUrlSerializer } from 'file path';

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

  ]
})

In Your routing module, set up 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: { //Parameters to pass to your component
                    heroId: new UrlSegment(keyword,{})
                }
            }
        }
    }
    return null
}

Now, in your component, you can access the heroId using

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

where route is an instance of ActivatedRoute

Answer 2

I managed to find a resolution to this issue.

Due to Angular's lack of support for this feature, 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);
        // utilize regex to replace as needed.
        return path.replace(/%3D/g, '=');
    }
}

Import this module when bootstrapping your AppComponent

import { CustomUrlSerializer } from 'file path';

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

  ]
})

In Your routing module, set up 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: { //Parameters to pass to your component
                    heroId: new UrlSegment(keyword,{})
                }
            }
        }
    }
    return null
}

Now, in your component, you can access the heroId using

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

where route is an instance of ActivatedRoute

Answer 3

Answer №2

Instead of using

{path: 'hero{=:id}', component: HeroDetailComponent},

consider using

{path: 'hero/:id', component: HeroDetailComponent},

or

{path: 'hero/:id/detail', component: HeroDetailComponent},

.

As per the guidelines provided in the angular documentation: it is recommended to define the path like this:

{ path: 'hero/:id',      component: HeroDetailComponent },

By following this structure, you can easily retrieve the id within your HeroDetailComponent as shown below:

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')));
}

For more detailed information, refer to the official Documentation

Answer 4

Instead of using

{path: 'hero{=:id}', component: HeroDetailComponent},

consider using

{path: 'hero/:id', component: HeroDetailComponent},

or

{path: 'hero/:id/detail', component: HeroDetailComponent},

.

As per the guidelines provided in the angular documentation: it is recommended to define the path like this:

{ path: 'hero/:id',      component: HeroDetailComponent },

By following this structure, you can easily retrieve the id within your HeroDetailComponent as shown below:

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')));
}

For more detailed information, refer to the official Documentation

Configuring routes for Angular4 router is a vital step in creating a

Answer №1

Answer №2

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