loginfield.js

app.directive('loginField', function($timeout) {
  return {
    require: 'ngModel',
    link: function(scope, elem, attrs, ctrl) {
      ctrl.$validators.loginform = function(modelValue, viewValue) {
        return true;
      };
      $timeout(function() {
        ctrl.$setTouched();
        ctrl.$validate();
        ctrl.$setValidity('loginform', LOGIN_ERRORS.length === 0);
      }, 100);
    }
  }
});