Check if a validator is disabled

[epyx25]

I have a model, with a description field, which is some time is required.

model.js

description: validator('presence', {
    presence: true,
    disabled(model) {
      return this.get('model.simple')
    }
  }),

In my {{form-group}} component the label has a class, if the field is required. (It depends on if the model has a validation on the property)

components/form-group.js

  init() {
    this._super(...arguments);
    var valuePath = this.get('property');
    defineProperty(this, 'required', computed.oneWay(`model.validations.attrs.${valuePath}`));
  },
  hasValidationClass: computed('required', function(){
    return this.get('required') ? 'has-error' : '';
  }),

components/form-group.hbs

{{#if label}}
  <label class="{{labelClass}} {{hasValidationClass}} control-label">
    {{label}}
  </label>
{{/if}}

Is there a way to find out if the validator is disabled or not, so I could do something like this?

components/form-group.js

  hasValidationClass: computed('required', function(){
    return this.get('required') && !this.get('required.disabled') ? 'has-error' : '';
  }),