When attempting to navigate using router.navigate in Angular 6 from a different component, it triggers a refresh

My routing setup is structured as follows:

Main App-routing module

const routes: Routes = [
  {
    path: '',
    redirectTo: environment.devRedirect,
    pathMatch: 'full',
    canActivate: [AuthenticationGuard]
  },
  {
    path: 'customers/:customerId/contracts/:contractId',
    loadChildren: './grouping/grouping-routing.module#GroupingRoutingModule'
    canActivate: [AuthenticationGuard],
  }
];

I also have a child component with its own set of routes:

const routes: Routes = [
      {
        path: 'create',
        component: CreateEditComponent,
        data: { animation: 'create' },
        canActivate: [ AuthenticationGuard ]
      },
      {
        path: ':groupId/edit',
        component: CreateEditComponent,
        data: { animation: 'edit' },
        canActivate: [ AuthenticationGuard ]
      },
      {
        path: '',
        component: OverviewComponent,
        data: { animation: 'overview' },
        canActivate: [ AuthenticationGuard ]
      }
];

In addition, there is a top level navbar component in the app.component.html.

Both the navbar component and the CreateEditComponent contain a function that is triggered by a button click event. The function looks like this:

  goToOverview(): void {
    this._router.navigate(['customers/:customerId/contracts/:contractId']);
  }

Although both components appear to be using the same paths, when I debug the router object, the results are different. The navbar function navigates correctly, but the CreateEditComponent adds a '?', then reloads the page. I'm puzzled as to why these seemingly identical calls produce different outcomes even though their activatedRoute objects are the same.

Answer №1

After some investigation, I've finally discovered the source of the refresh issue. It turns out that the button containing the (click) handler responsible for triggering the refresh was located within a <form> element. Each time the click function executed and triggered the router.navigate action, it inadvertently initiated a form submission, leading to the undesired refresh.

Answer №2

When utilizing a relative URL, your navigation is based on the current component's position within the router tree.

The Navbar resides in the root component, so it navigates relative to the router root, which is "/".

The CreateEditComponent is a routed child of the root, so its navigation is relative to the first child of the router, potentially "/create" or another path depending on your specific router structure. Each nested router outlet or added child route creates a new node in the router tree.

An essential aspect to consider is using an absolute URL format like:

this._router.navigate(['/customers/:customerId/contracts/:contractId']);

Adding a "/" at the start makes it an absolute URL that consistently navigates from the root, regardless of the calling location.

If you are experiencing unexpected refresh behavior, it may be due to navigating to an invalid route and encountering poorly handled errors.

In my opinion, while nested router outlets offer versatility and functionality, they also introduce complexity to your application. Use them thoughtfully, favoring a simpler structure whenever feasible.

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