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* [ADF-2679] Updated tutorial index script and added the first few tutorials * [ADF-2679] Minor fixes to README and index script
69 lines
2.7 KiB
Markdown
69 lines
2.7 KiB
Markdown
---
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Level: Beginner
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---
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# Adding a new view
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Every application developed in Angular is a single page application where the concepts of *view* and *routing* play a key role in the user experience. Being a single page application, the navigation between the different layouts (called *views*) is enabled through the *routing*. In this tutorial you will learn how to create a new view into your application and how to have access to it using a defined endpoint.
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## Creating a view
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Into an Angular application, a view is implemented by a regular component. A view can use other views (so other components), but a view can be used to implement the full layout of your application. This is the reason why creating a view is the task than creating a component.
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To create a view, run the following command into a terminal, starting from the root of your project.
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ng generate component my-first-view
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See the [Adding a new component](new-component.md) tutorial for further details.
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## Routing the view
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An Angular application has one singleton instance of the `Router` service that is used to match the browser's URL with the corresponding component to display. The `Router` service must be configured in a typescript file (usually in the `imports` , in with a syntax similar to the
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following source code.
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```ts
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const appRoutes: Routes = [
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{ path: 'path-in-the-app', component: ExistingComponent },
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{ path: '**', component: PageNotFoundComponent }
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];
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@NgModule({
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imports: [
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RouterModule.forRoot(
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appRoutes,
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{ enableTracing: true } // <-- debugging purposes only.
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)
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// other imports here
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],
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...
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})
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```
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To add the new view to the routing, change the `appRoutes` constant as follows:
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```ts
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const appRoutes: Routes = [
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{ path: 'path-in-the-app', component: ExistingComponent },
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{ path: 'my-first-view', component: MyFirstViewComponent }, // <-- Add this!
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{ path: '**', component: PageNotFoundComponent }
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];
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```
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And remember to import the component in the same file with the following syntax:
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```ts
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import { MyFirstViewComponent } from './my-first-view/my-first-view.component';
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```
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Be aware that the `Router` service can be declared in a file that can be stored in different places in the application's structure. Usually the place where the `Router` service is declared is closed to the file containing the root module.
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## Testing the view
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To render the new view through the application and check the user experience, restart the application and open a browser to the following URL.
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http://<ip_address>:<port>/my-first-view
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The result should be a very simple page with the following content.
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my-first-view works!
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