July 2017
Intermediate to advanced
454 pages
10h 1m
English
Content preview from Expert Angular
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Route Guards
Route Guards let you control various stages of a route navigation. While navigating from one component to another, we need to make sure that the data that will be displayed is authorized for the user, and if not, cancel the navigation.
A Router Guard can return an Observable<boolean> or a Promise<boolean>, and the router will wait for Observable to resolve to either true or false:
- If the Route Guard returns true, it will proceed with the navigation and display the view
- If the Route Guard returns false, it will abort/cancel the navigation
There are various Route Guards we can use either independently or in combinations. They are as follows:
- canActivate
- canActivateChild
- canDeactivate
- Resolve
- canLoad
The guard function can accept ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.