Clear input fields when checkbox is checked

The simple approach is to use ngChange directive on checkbox and set text input model to empty string if checkbox is checked. Something like this:

<input type="text" ng-model="data.test" ng-disabled="data.check">

<input type="checkbox" ng-model="data.check" value="one"
            ng-change="data.test = data.check ? '' : data.test">

Demo: http://plnkr.co/edit/pKGui2LkP487jP0wOfHf?p=preview