Angular Element not resolving routes(?) in another angular project, instead only "<router-outlet></router-outlet>" is shown on Website

Question

following starting point:

We have a few angular frontend micro-services, and now we want to bring them together in one app. We are trying the Angular-Elements approach and we have exported one of the microservices which yielded a huge JS-file.

The problem

When we included the angular element in the "bring it together"-project, simply the "router-outlet" tag is in the dom, but no html is rendered.

Code

The Custom Element:

app.module.ts:

        import {NgModule, Injector} from '@angular/core';

    import {AppRoutingModule} from './app-routing.module';
    import {AppComponent} from './app.component';

    import {PhoneModule} from "./features/phone/phone.module";
    import {createCustomElement} from '@angular/elements';
    import {Router} from '@angular/router';

    @NgModule({
      declarations: [
        AppComponent,
      ],
      imports: [
        AppRoutingModule,
        PhoneModule,
      ],
      entryComponents: [AppComponent],
    })
    export class AppModule {

      constructor(private injector: Injector, private router: Router) {
        this.router = router;
      }

      ngOnInit() {
        this.router.initialNavigation();
      }

      ngDoBootstrap() {
        const customElement = createCustomElement(AppComponent, {injector: this.injector});
        customElements.define('phone-contracts', customElement);
      }
    }

app-routing.module.ts:

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';
import { PhoneListComponent } from './features/phone/phone-list/phone-list.component';
import {PhoneContractDetailsComponent} from "./features/phone/phone-contract-details/phone-contract-details.component";

const routes: Routes = [
    { path: '', redirectTo: 'phone-list', pathMatch: 'full' },
    { path: '', component: PhoneListComponent,},
    { path: 'phone-list/:id', component: PhoneContractDetailsComponent },
    { path: '**', redirectTo: '/phone-list', pathMatch: 'full'}
];

@NgModule({
  imports: [RouterModule.forRoot(routes)],
  exports: [RouterModule]
})
export class AppRoutingModule { }

The bring-it-together-project: These are from the component which is supposed to handle this specific micro-service

phone-contracts.component.html:

<p>
  phone-contracts works!
</p>

<phone-contracts>
  <app-phone-list>
  </app-phone-list>
</phone-contracts>

app.module.ts:

import {CUSTOM_ELEMENTS_SCHEMA, NgModule} from '@angular/core';
import { FormsModule } from '@angular/forms';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent } from './app.component';
import { HomeComponent } from './home/home.component';
import { LoginComponent } from './login/login.component';
import { FooComponent } from './foo/foo.component';
import { HttpClientModule } from '@angular/common/http';
import { CookieService } from 'ngx-cookie-service';
import { AppRoutingModule } from './app-routing.module';
import { AppService } from './app.service';
import { PhoneContractsComponent } from './phone-contracts/phone-contracts.component';
import { DeviceListComponent } from './device-list/device-list.component';

@NgModule({
  declarations: [
    AppComponent,
    HomeComponent,
    LoginComponent,
    FooComponent,
    PhoneContractsComponent,
    DeviceListComponent
  ],
  imports: [
    BrowserModule,
    FormsModule,
    AppRoutingModule,
    HttpClientModule],
  schemas: [CUSTOM_ELEMENTS_SCHEMA],
  providers: [CookieService,AppService],
  bootstrap: [AppComponent]
})
export class AppModule { }

stuff that might matter?

• We are using this as our "builder": "@angular-devkit/build-angular:browser",

• We think that the issue is that the custom element cant resolve the routing and therefore just shows nothing, could this be true?

Answer 1

This is what your Routes list should look like:

const routes: Routes = [
    { 
        path: 'phone-list',
        component: PhoneListComponent
    },
    { 
        path: 'phone-list/:id',
        component: PhoneContractDetailsComponent 
    },
    { 
        path: '**', 
        redirectTo: 'phone-list', 
        pathMatch: 'full'
    }
];

In addition to that, you haven't actually specified where your router-outlet element is present.. if it's displaying it as html then chances are you haven't closed it's parent tag and/or it's not being used on an Angular component.