child component cannot load use child route in angular

Question

I have a Bar component, then I create a child component (child-bar) under Bar Component. I also have child route for it. But I child component cannot find (404) when I use child route.

app.routes.ts:

import { Routes } from '@angular/router';
import { HomeComponent } from './home';
import { AboutComponent } from './about';
import { BarComponent } from './bar/bar.component';
import { NoContentComponent } from './no-content';

import { DataResolver } from './app.resolver';

export const ROUTES: Routes = [
  { path: '',      component: HomeComponent },
  { path: 'home',  component: HomeComponent },
  { path: 'about', component: AboutComponent },
  { path: 'bar', component: BarComponent},
  { path: 'detail', loadChildren: './+detail#DetailModule'},
  { path: 'barrel', loadChildren: './+barrel#BarrelModule'},
  { path: '**',    component: NoContentComponent },
];

bar.component.ts:

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'bar',
  templateUrl: './bar.component.html',
  styleUrls: ['./bar.component.css']
})
export class BarComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  }

}

bar.component.html:

<p>
  bar works!
</p>
<span>
      <a [routerLink]=" ['./child-bar'] ">
        Child Bar
      </a>
    </span>
<router-outlet></router-outlet>

child-bar.component.ts:

import { Component, OnInit } from '@angular/core';

@Component({
  selector: 'child-bar',
  templateUrl: './child-bar.component.html',
  styleUrls: ['./child-bar.component.css']
})
export class ChildBarComponent implements OnInit {

  constructor() { }

  ngOnInit() {
    console.log('hello `ChildBar` component');
  }

}

child-bar.module.ts:

import { CommonModule } from '@angular/common';
import { FormsModule } from '@angular/forms';
import { NgModule } from '@angular/core';
import { RouterModule } from '@angular/router';

import { routes } from './child-bar.routes';
import { ChildBarComponent } from './child-bar.component';

console.log('`ChildBar` bundle loaded asynchronously');

@NgModule({
  declarations: [
    /**
     * Components / Directives/ Pipes
     */
    ChildBarComponent,
  ],
  imports: [
    CommonModule,
    FormsModule,
    RouterModule.forChild(routes),
  ],
})
export class ChildBarModule {
  public static routes = routes;
}

child-bar.routes.ts:

import { ChildBarComponent } from './child-bar.component';

export const routes = [
  { path: '', component: ChildBarComponent,  pathMatch: 'full' },
];

Please let me know if you need more file, I can attach it. Thanks.

Answer 1

Your routing file is wrong if something is child of a component then routing file should be like this

In case of normal routing without lazy loading

export const routes: Routes = [
  { path: '', redirectTo: 'home', pathMatch: 'full' },
   { path: 'home',  component: HomeComponent },
   { path: 'about', component: AboutComponent },
   { path: 'bar', component: BarComponent,
    children: [
      { path: '', redirectTo: 'child-bar', pathMatch: 'full' },
      { path: 'child-bar', component: ChildBarComponent }
    ]
  }
];

if you want lazy loading you can try these two way

1)

{ path: 'bar', component: BarComponent,
        children: [
          { path: '', redirectTo: 'child-bar', pathMatch: 'full' },
          { path: 'child-bar', loadChildren: 'childbar/childbar.module#ChildBarModule' }
        ]
     }

2) move your complete bar component with child component in separate module with there own routing table

export const routes: Routes = [
  { path: '', redirectTo: 'product-list', pathMatch: 'full' },
   { path: 'home',  component: HomeComponent },
   { path: 'about', component: AboutComponent },
   { path: 'bar', loadChildren: 'bar/bar.module#LazyModule' }
  }
];

check this plnkr to understand how lazy loading works https://plnkr.co/edit/vpCqRHDAj7V6mlN1AknN?p=preview i hope this will help :)