Now that you have routing set up, you can add multiple pages or views with navigation. The goal is to get a solid initial understanding of the Angular Router, before presenting a more advanced example. In this tutorial we assume you already have Angular CLI 11 installed. In Angular, a route is an object (instance of Route) that provides information about which component maps to a specific path. This way the app-routing.module.ts file will be created in the src/app folder along with the app.module.ts file. You can do that using the ActivatedRouteSnapshot class. Lazy loading modules in Angular allows applications to load modules only when they are needed i.e when you first visit the route(s) corresponding to component(s) belonging to the lazy loaded module. We can also spcifiy any number of transitions since the second paramter of the trigger() method is of type Array. The Angular Router provides the ActivatedRoute class that can be injected in the component. https://www.tektutorialshub.com/angular/routerlinkactive-router-outlet-styling This section continues from the previous section with the other methods to implement navigation. We will start with single app component that has two routes. The builtin matching strategies are prefix (the default) and full. The Angular 8 Router uses to navigate between views or pages that trigger by the user actions. You get paid, we donate to tech non-profits. For a dynamic link, … Finally, on the ngOnInit() event, we call the getProduct() method of ProductService to retrieve a product with id 1 and assign it to the product variable. Router Link Example … This module simulates a backend web application by intercepting the requests from HttpClient and redirects them to a memory store that you need to create and supply some data in it. The
is where the Angular router inserts the component(s) matching the current route. to ProductDetailComponent. Sign up for Infrastructure as a Newsletter. Next, you would need to create a routing module inside the main application module and in its own file using a command like this: The --flat option tells the CLI to generate a flat file without a subfolder. It is also possible to tell the Router what to place in multiple named outlets with something like this: In this example, the sammy segment will be placed in the outlet named side and the sharks segment will be placed in the outlet named footer. Now, we can go to paths like /posts/1, ..., or /posts/2abc and we can actually access the passed ID in the PostsComponent. navigate() takes an array of URL segments. We'll learn how to use multiple outlets, redirect users from the empty path, use wild-card paths to implement 404 error pages and lazy load modules using the loadChildren() method. The Angular 11 Router supports adding animations when navigating between different routes in your application. The difference now is that is dynamically selecting the CoreComponent based on the state of the Angular router. Hacktoberfest In this quick section, we've seen how to define and trigger animations when navigating between routes in Angular 11 applications. Otherwise, you will need to set up routing manually. So we can see that our two components are very simple just displaying some text. //app.js var routerApp = angular.module('routerApp', ['ui.router']); routerApp.config(function($stateProvider, $urlRouterProvider) { $urlRouterProvider.otherwise('/home'); $stateProvider // HOME STATES AND NESTED VIEWS ===== .state('home', { url: '/home', templateUrl: 'partial-home.html', controller: function($scope) { $scope.animals = [{id:1,name:'Dog'}, {id:2,name:'Cat'}]; } }) // nested list with custom controller … First, you need to have a few prerequisites if you intend to follow this tutorial step by step: Starting with Angular 7, the CLI will allow to automatically set up routing without the hassle of creating and configuring a routing module. In the main routing file app-routing.module.ts, you need to use the loadChildren() method to lazy load the feature module: The loadChildren() method takes the path to the module, appended to # appended to the module’s class name. You can tell the Router what to place in a named outlet with something like this: In that example, the sammy segment will be placed in the outlet named side. For example: This is an example implementation of ExampleGuard: Since the canActivate() method will always return true, this guard will always allow access to ProductDetailComponent. Supporting each other to make an impact. Query parameters in Angular allow for passing optional parameters across any route in the application. You can add any navigation or static parts of your UI in the app shell. In this section, we've seen how to lazy load modules with Angular 11 router using feature modules and the loadChildren() method. When a user clicks New component, the page is not refreshed and the contents are shown to the user without any reloading. Step 2: Adding Multiple Views/Pages or Configuring Angular Routes. ActivatedRoute and Params ActivatedRoute is an Angular service that contains route specific information such as route parameters, global query params etc. The router navigate() method accepts the same one-item link parameters array that you can bind to the [routerLink] directive. In your terminal, run: Next, open the src/app/product.service.ts file and update accordingly: We added the API_URL string that holds the address of the API server. For example, let's suppose our route has a date parameter that needs to be passed to the getItems(date) method: We import the ActivatedRouteSnapshot class from the @angular/router package and we provide a paramater route of type ActivatedRouteSnapshot to the resolve() method. In this section, we'll see by example how to lazy loading components using feature modules and the loadChildren() method. Note: Please make sure you have Angular CLI 8 installed on your development machine to generate Angular 8 projects. You can easily generate components using the Angular CLI. Later when you have a real backend you can simply remove the In-Memory Web API module and all your requests will go to the real backend. How to add component routing in your application using the router. Import Router,NavigationEnd from ‘@angular/router’ and inject in the constructor. Next, we define a product variable of type Product that will hold a product and we initialize it with a non existent product. The rest of the code is just iterating over the products array to find the corresponding product to display via its id. Dynamic route Navigation using relative path in Angular. Go ahead and open the src/app/app-routing.module.ts file and start by importing the previous components as follows: Next, you need to add routes to the routes array: Now we have three views which can be access from the /home, /about and /contact paths. Now open the src/app/product-detail/product-detail.component.html and add the following code: After creating and implementing the components of our application, now you need to add them to the router. When generating a new app, the CLI prompts you to select CSS or a CSS preprocessor. Given the following template, I can assign a class for the active route because router-link-active is added by Angular2 to the element. Finally on the ngOnInit() life-cycle event of the component we subscribe to the Observable returned from calling the getProducts() method and we assign the fetched products to the products array. We use the trigger() method to create a myAnimation trigger which will be applied to the