I realized I mentioned ‘$apply()’ when your question was about digest. And that it is aware of all its ancestors, siblings, and children. How to use Forms in AngularJS to take user input, send to server or process it. We will make a full blown AngularJS CRUD application. I think you could then also use the AngularJS ‘$compile’ service to dynamically apply directives. So you would probably also need a provider that can track all of these directives and their relationships, I don’t have an ‘ng-model’ on the input. Its not a bad idea though. I’ll put it on my list of future directive ideas. The outer form is a with rc-submit=”sendQuestionnaire()” while the inner is a . If the user tries to submit the outer form when not logged in the fields in the inner form needs attention. Notice in the above markup, and then make assumptions about their context. You can’t check $valid on null – it will give you a ReferenceError. It would be better to either make the form required, validate it, or add another parameter for validity-check method. You will get insight into several AngularJS built-in directives used in day-to-day usage. We will start from ground zero and will build upon peace by peace. AngularJS which will be added/removed on specific steps in validation cycle. What we want to do is to make sure that our custom validator is executed when Angular compiles this directive.