Delivering secure route information to paths in Angular 2

Question

Delivering secure route information to paths in Angular 2

When defining my routes in the routing module, I have structured the data passing like this:

const routes: Routes = [
  { path: '', redirectTo: 'login', pathMatch: 'full' },
  { path: 'login', component: LoginComponent, data: { ShowTopBar: true, showSideBar: false} },
  { path: 'error', component: ErrorComponent, data: { ShowTopBar: true, showSideBar: false}}

];
export const AppRoutingModule: ModuleWithProviders = RouterModule.forRoot(routes);

To ensure type safety for the data being passed, I created a class called RouteData. This class holds the values of ShowTopBar and ShowSideBar, which are initialized through its constructor.

export class RouteData {
constructor(showTopbar: boolean, showSideBar: boolean) {
  this.ShowSideBar = showSideBar;
  this.ShowTopBar = showTopbar;
}
 public ShowTopBar: boolean;
 public ShowSideBar: boolean;
}

I then modified the route declarations as follows:

const routes: Routes = [
  { path: '', redirectTo: 'login', pathMatch: 'full' },
  { path: 'login', component: LoginComponent, data: new RouteData(false, false) },
  { path: 'error', component: ErrorComponent, data: new RouteData(true, false)}

];

However, upon compiling, I encountered the following error:

Error encountered resolving symbol values statically. Calling function 'RouteData', function calls are not supported. Consider replacing the function or lambda with a reference to an exported function, resolving symbol AppRoutingModule

My concern is how can I pass RouteData in a type-safe way to Routes so that I can leverage type-safety effectively.

typescript routes angular2-routing

Answer 1

Answer №1

Below is an example of how you can achieve this:

Extend the Route from @angular/router and update the data type as shown below:

export interface RouteData {
  ShowTopBar: boolean;
  ShowSideBar: boolean;
}

interface CustomRoute extends Route {
  data?: RouteData;
}

Change the type of routes to CustomRoute[] instead of Routes:

const routes: CustomRoute[] = [
  { path: '', redirectTo: '/home', pathMatch: 'full' },
  { path: 'home', component: HomeComponent, data: { ShowSideBar: true, ShowTopBar: true } }
];

Now you can pass type-safe data as illustrated in the image below:

https://i.sstatic.net/a9eWj.png

Answer 2

Below is an example of how you can achieve this:

Extend the Route from @angular/router and update the data type as shown below:

export interface RouteData {
  ShowTopBar: boolean;
  ShowSideBar: boolean;
}

interface CustomRoute extends Route {
  data?: RouteData;
}

Change the type of routes to CustomRoute[] instead of Routes:

const routes: CustomRoute[] = [
  { path: '', redirectTo: '/home', pathMatch: 'full' },
  { path: 'home', component: HomeComponent, data: { ShowSideBar: true, ShowTopBar: true } }
];

Now you can pass type-safe data as illustrated in the image below:

https://i.sstatic.net/a9eWj.png

Answer 3

Answer №2

Building on Madhu's response, if you desire all branches of your navigation tree to exhibit those characteristics, not solely the top-level paths, you must also modify the children attribute as follows:

interface CustomRoute extends Route {
  data?: RouteData;
  children?: CustomRoute[];
}

I had a similar perspective as Madhu but was perplexed why my subordinate routes lacked intellisense or type security. Eventually, I discovered that the children attribute still referenced Routes according to the framework's definition.

Answer 4

Building on Madhu's response, if you desire all branches of your navigation tree to exhibit those characteristics, not solely the top-level paths, you must also modify the children attribute as follows:

interface CustomRoute extends Route {
  data?: RouteData;
  children?: CustomRoute[];
}

I had a similar perspective as Madhu but was perplexed why my subordinate routes lacked intellisense or type security. Eventually, I discovered that the children attribute still referenced Routes according to the framework's definition.

Answer 5

Answer №3

I recently developed a compact library that includes comprehensive typings for the standard router.

Check out ngx-typed-router here

This library provides type definitions for everything related to router setup, components, resolvers, and even testing scenarios.

For instance:

export const ExampleRoutes: Routes = [
  {
    path: 'test/:id',
    component: ExampleComponent,
    resolve: {
      exampleResponse: ExampleResolveService,
    } as ResolveConfig<ExampleTestRouteData>,
  },
];

export interface ExampleTestRouteQuery {
  param1: string;
}

export interface ExampleTestRoutePath {
  id: string;
}

export interface ExampleTestRouteData {
  exampleResponse: ExampleResponse;
}

Component:

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.scss']
})
export class ExampleComponent {

  constructor(
    @Inject(ActivatedRoute) public route: TypedRoute<ExampleTestRouteData, ExampleTestRoutePath, ExampleTestRouteQuery>,
    // or 
    // @Inject(ActivatedRoute) public route: TypedRoute<ExampleTestRouteData>,
    // all generic types are defaulting to angular standard types
  ) { }

}

and template:

<div>{{ route.snapshot.data.exampleResponse.id }}</div>
<div>{{ route.snapshot.data.exampleResponse.name }}</div>

This setup ensures type safety and easy refactoring capabilities.

Be sure to explore the documentation for more usage examples.

Answer 6

I recently developed a compact library that includes comprehensive typings for the standard router.

Check out ngx-typed-router here

This library provides type definitions for everything related to router setup, components, resolvers, and even testing scenarios.

For instance:

export const ExampleRoutes: Routes = [
  {
    path: 'test/:id',
    component: ExampleComponent,
    resolve: {
      exampleResponse: ExampleResolveService,
    } as ResolveConfig<ExampleTestRouteData>,
  },
];

export interface ExampleTestRouteQuery {
  param1: string;
}

export interface ExampleTestRoutePath {
  id: string;
}

export interface ExampleTestRouteData {
  exampleResponse: ExampleResponse;
}

Component:

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.scss']
})
export class ExampleComponent {

  constructor(
    @Inject(ActivatedRoute) public route: TypedRoute<ExampleTestRouteData, ExampleTestRoutePath, ExampleTestRouteQuery>,
    // or 
    // @Inject(ActivatedRoute) public route: TypedRoute<ExampleTestRouteData>,
    // all generic types are defaulting to angular standard types
  ) { }

}

and template:

<div>{{ route.snapshot.data.exampleResponse.id }}</div>
<div>{{ route.snapshot.data.exampleResponse.name }}</div>

This setup ensures type safety and easy refactoring capabilities.

Be sure to explore the documentation for more usage examples.

Delivering secure route information to paths in Angular 2

Answer №1

Answer №2

Answer №3

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