In this video, Aviv Ben-Yosef shows the required steps in order to convert an existing directive into a real component. Learn what changes are necessary.
- [Instructor] Let's see how directive can be converted…into a component.…Open todo.js in the exercise files.…The first step in the conversion is, not surprisingly,…to change the code to use the component function…instead of directive.…Next, notice that components are defined…using plain objects.…There's no need for a factory function.…If the directive had any dependencies injected,…they could be easily moved to the controller itself.…
I now go over the definition object,…and change some attributes.…First, I rename scope to bindings.…This is the name used for components.…Bind to controller is always on for components,…and is no longer needed.…Controllers that use $ctrl as their name…don't need to specify it anymore.…And since components only work on the element level,…it's safe to delete the restrict setting.…
And that's it.…This is now our real and working component.…
Aviv Ben-Yosef kicks off the course by explaining what's different in Angular 1.6, as well the different motives for upgrading. Next, he walks through how to safely upgrade an existing app. He covers going from controllers to directives, as well as component lifecycle hooks. He also goes into the architectural changes in Angular, such as one-way data flow and immutability. To wrap up, he discusses how to properly test components.
- Deciding to upgrade an existing app
- Upgrading to Angular 1.6
- Removing standalone controllers
- Using directives as route targets
- Converting a controller's code
- Converting a controller's template
- Comparing directives and components
- Converting a directive
- Reviewing the concept of one-way binding
Skill Level Intermediate
AngularJS 1: Building a Data-Driven Appwith Ray Villalobos2h 15m Intermediate
1. Controllers to Directives
2. Use controllerAs
Convert a controller’s code1m 57s
3. Directives to Components
4. Component Lifecycle Hooks
5. One-Way Data Binding
6. Testing Components
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