确认Angularjs中的密码功能不起作用

Question

我正在尝试使用相同的确认密码功能，并遵循@sylvester建议的方法，但是我表单上的确认密码字段无法显示错误或对此问题的验证。请在下面找到表单字段，并在下面找到指令。

预先感谢

app.directive('validPasswordC', function() {
        return {
          require: 'ngModel',
          scope: {
      
            reference: '=validPasswordC'
      
          },
          link: function(scope, elm, attrs, ctrl) {
            ctrl.$parsers.unshift(function(viewValue, $scope) {
      
            //   var noMatch = viewValue != scope.reference
            var noMatch = viewValue != scope.reference.$viewValue;
              ctrl.$setValidity('noMatch', !noMatch);
              return (noMatch)?noMatch:!noMatch;
            });
      
            scope.$watch("reference", function(value) {;
              ctrl.$setValidity('noMatch', value === ctrl.$viewValue);
      
            });
          }
        }
      });

<div class="form-group" ng-class="{'has-error':registerctrl.form.psw.$dirty && registerctrl.form.psw.$error.required}">
                <label for="psw"><b>Password:</b></label>
                <input type="password" class="form-control" placeholder="Enter Password" ng-model="registerctrl.psw"
                    name="psw" ng-minlength="8" ng-maxlength="20" ng-pattern="/(?=.*[a-z])(?=.*[A-Z])(?=.*[^a-zA-Z])/"
                    required>
                <span ng-show="registerctrl.form.psw.$dirty && registerctrl.form.psw.$error.required" class="help-block">Password is required</span>
                
                <p ng-show="registerctrl.form.psw.$error.minlength" class="error">
                    Passwords must be between 8 and 20 characters.</p>
                <p ng-show="registerctrl.form.psw.$error.pattern" class="error">
                    Must contain one lower &amp; uppercase letter, and one non-alpha character (a number or a symbol.)</p>
            </div>


            <div class="form-group" ng-class="{'has-error':registerctrl.form.psw-repeat.$dirty && registerctrl.form.psw-repeat.$error.required}">
                <label for="psw-repeat"><b>Repeat Password:</b></label>
                <input type="password" class="form-control" placeholder="Repeat Password" ng-model="registerctrl.pswrepeat" name="psw-repeat" valid-password-c="registerctrl.form.psw"
                required>
             <p ng-show="registerctrl.form.psw-repeat.$error.noMatch" class="error">Passwords do not match.</p>
            </div>