Is it possible to access $dirty property of some element which is not put directly in form, something like:
<form name="form">
<div name="divInForm">
<input type="text" name="inputInDivInForm">
</div>
<button ng-disabled="form.divInForm.inputInDivInForm.$dirty"></button>
</form>
At first, you must set ngModel to your input, otherwise it won't work.
Also, you have to access it this way: form.inputInDivInForm.$dirty.
Look at this simple example:
<!DOCTYPE html>
<html ng-app>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.8/angular.min.js"></script>
</head>
<body>
<form name="form">
<div name="divInForm">
<input type="text" ng-model="any" name="inputInDivInForm">
</div>
<button type="submit" ng-disabled="form.inputInDivInForm.$dirty">Click</button>
</form>
<pre ng-bind="form.inputInDivInForm | json"></pre>
</body>
</html>
"form.inputInDivInForm.$dirty"will do it.