Join Justin Schwartzenberger for an in-depth discussion in this video Working with route parameters, part of Angular 2 Essential Training.
- [Instructor] Angular provides a way to get information…about the currently activated route…through a service of type activated route.…Getting to that information is just…a constructor injection away.…In the media item list component ts file,…let's add an import statement…to bring in activated route…from the Angular router scoped package…(typing sounds)…And then we can add it to the constructor parameters,…making it private so we can get to it…from other methods in the class.…
Naming it activatedRoute and setting…the type to activated route.…The activated route service has a property…named params that is an observable.…That means that you can subscribe to it…and get notified any time a set of route params changes.…So in the ngOnInit method, we can remove the existing logic…and replace it with a call to…this.activatedRoute.params.subscribe.…
We want to give this a function, so we will use…an arrow function here, and name the parameter params,…then the arrow, and then the fuction body.…We actually need to do two things here.…
Justin Schwartzenberger steps through the framework one feature at a time, focusing on the component-based architecture of Angular. Learn what Angular is and what it can do, as Justin builds a full-featured web app from start to finish. After mastering the essentials, you can tackle the other project-based courses in our library and create your own Angular app.
- What is Angular?
- Setting up an Angular template
- Creating a component
- Binding events and properties
- Getting data to components
- Using directives and pipes
- Creating Angular forms
- Validating form data
- Understanding dependency injection
- Providing services
- Making HTTP calls
Skill Level Intermediate
Q: This course was updated on 03/01/2018. What changed?
A: The following topics were updated: directives and pipes, forms, dependency injection and services, HTTP, and routing.
1. Architecture Overview
3. Directives and Pipes
5. Dependency Injection and Services
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