Encountering NG0204 error while utilizing the ActivatedRoute within an Angular application

Encountering an issue with ActivatedRoute while running the ng serve command on my Angular project:

Error: NG0204: Can't resolve all parameters for ActivatedRoute: (?, ?, ?, ?, ?, ?, ?, ?).
    at getUndecoratedInjectableFactory (core.mjs:9296:15)
    at injectableDefOrInjectorDefFactory (core.mjs:9286:16)
    at providerToFactory (core.mjs:9332:52)
    at providerToRecord (core.mjs:9316:25)
    at R3Injector.processProvider (core.mjs:9213:24)
    at core.mjs:9041:59
    at forEachSingleProvider (core.mjs:9387:13)
    at forEachSingleProvider (core.mjs:9384:13)
    at new R3Injector (core.mjs:9041:9)
    at createInjectorWithoutInjectorInstances (core.mjs:10612:12)
(

Suddenly facing this error after updating Angular, without any previous indication of a problem. The IDE isn't showing any errors either.

import { Routes, RouterModule, ActivatedRoute } from '@angular/router';

@NgModule({
  declarations: [
    AppComponent,
    PropertyCardComponent,
    PropertyListComponent,
    NavBarComponent,
    AddPropertyComponent,
    PropertyDetailsComponent
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    RouterModule,
    FormsModule
  ],
  providers: [ActivatedRoute],
  bootstrap: [AppComponent]

Seeking advice from ChatGPT, but still unable to resolve the issue. Ideally, it should display a list of properties under path: '', however, I'm stuck with the parameter error mentioned above.

angulartypescriptangular-router

Answer №1

To declare your module, you will need to:

  • Define the routes and specify how the routing should be configured by passing the routes into RouterModule.forRoot(routes)
  • Do not include the ActivatedRoute in providers, unless a custom ActivatedRoute implementation is being provided.
@NgModule({
  declarations: [
    AppComponent,
    PropertyCardComponent,
    PropertyListComponent,
    NavBarComponent,
    AddPropertyComponent,
    PropertyDetailsComponent
  ],
  imports: [
    BrowserModule,
    HttpClientModule,
    // Include RouterModule with routes
    RouterModule.forRoot(routes),
    FormsModule
  ],
  //Comment out this line 
  // providers: [ActivatedRoute],
  bootstrap: [AppComponent]

}) export class AppModule{}

Your routes can be set up like this:

export const routes: Routes = [{
 path: '', 
 component: AppComponent
}]

In your AppComponent, remember to inject the ActivatedRoute as shown here:

@Component({selector: 'app-root', template: ``}) 
export class AppComponent {
  constructor(private route: ActivatedRoute){}
}

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