Suggestion to use safe $apply in ngModelDirective

[smashercosmo]

In ngModelDirective $apply is used to change model's value on event different from default and to change model's $touched state. But I suggest to use safe $apply instead, because we can't guarantee that some event (blur for example) won't be triggered from the outside during digest cycle. Real life example. Try to change value in the first input - you'll get "$digest already in progress" error.

[jeffbcross]

@tbosch any idea why this wasn't fixed by 719c747?

[tbosch]

The problem is we have another blur listener built into ngModel that does not use the semantics of ng-blur (see https://github.com/angular/angular.js/blob/master/src/ng/directive/input.js#L2430). Need to fix this as well...