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jehugaleahsa / nested-forms.md
Created June 23, 2017 20:46
Angular 2- Nested Model-Driven Forms

Angular 2 - Supporting Nested Model-Driven Forms

Introduction - It worked in AngularJS

If you build real business applications, then you know most of your development effort goes into forms. AngularJS struck me right away as an amazing improvement over the previous generation of HTML libraries, simply because model binding was really well done. Integrating binding with validation made it a first-class web framework.

Business applications of any moderate complexity often have reusable user controls and AngularJS directives were great for that purpose. AngularJS had this amazing feature, whereby placing an ng-form inside of another ng-form the state of the child form was automatically reflected in the parent! You could build up directives with their own validation completely independent of what page they belonged to. Simply by dropping them on your page, all of your validation was auto-wired up. Brilliant!

It doesn't work in Angular2

It is a little surprising, then, that Angular2 did not follow in

<environment names="Development">
<link rel="stylesheet" href="~/lib/bootstrap/dist/css/bootstrap.css" />
<link rel="stylesheet" href="~/css/site.css" />
</environment>
<environment names="Staging,Production">
<link rel="stylesheet" href="https://ajax.aspnetcdn.com/ajax/bootstrap/3.3.6/css/bootstrap.min.css"
asp-fallback-href="~/lib/bootstrap/dist/css/bootstrap.min.css"
asp-fallback-test-class="sr-only" asp-fallback-test-property="position" asp-fallback-test-value="absolute" />
<link rel="stylesheet" href="~/css/site.min.css" asp-append-version="true" />
</environment>
@staltz
staltz / introrx.md
Last active July 19, 2024 22:21
The introduction to Reactive Programming you've been missing