- 11Isolate State Mutations in Angular Components8m 6s
Isolate State Mutations in Angular Components
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Managing state is one of the hardest things to do in any application. Angular 2 tackles this problem by making it easy to implement a reactive, uni-directional data flow that favor immutable operations. We are moving in the right direction in Angular 1 by moving our state and logic to models but invariably this raises a question. If we are moving to an immutable world, how do you manage mutable operations like forms in Angular? In this lesson, we are going to learn a surprisingly simple technique to isolate state mutations within a component using component lifecycle hooks.
Is there any reason you would choose Object.assign instead of angular.copy?
I generally prefer native implementations unless there are good reasons to use an alternate implementation. As far as I know there is not a version of angular.copy in Angular 2 while Object.assign is here to stay. With that said, you could use angular.copy and it would work just fine.
Hi Lukas, Is there any advantage of using controllerAs syntax and not the value "$ctrl" set by default in the components
This is in part due to personal preference but I find that explicitly defining controllerAs is more self-documenting than using $ctrl across the board. I have also found that in pre-existing code bases, it helps with consistency as most everything else is using controllerAs.
We've used typescript since day 1 with angular, am curious if you think this would be a viable approach https://hotell.gitbooks.io/ng-metadata/content/ for 1x code bases versus your es6 approach.
I definitely think that is a viable approach and for the most complimentary to my approach. I see the TypeScript approach being an extension of what I am talking about. ES6 and TypeScript are great because they encourage a better architecture at the language level.