>Hi everybody,
>
>I have the following drop down
>
>

><select class="form-control-inline"
>                        ng-model="currentMatrixTemplate.rowAttributeId"
>                        required
>                        ng-change="changeAttribute('row', currentMatrixTemplate.rowAttributeId, {{currentMatrixTemplate.rowAttributeId}})"
>                        ng-options="attribute.value as attribute.text for attribute in metaData.attributes |filter: { value: '!' + currentMatrixTemplate.columnAttributeId }">
>                    <option value="" disabled>        @String.Format(Labels.selectX, Labels.attribute)...</option>
>                </select>

>
>I want to make sure that user selected a value which will be a number greater than 0. I don't want the Add button to become enabled until it's done.
>
>I can, of course, make all the necessary checks in the Add button's code, but wondering if it somehow possible to treat 0 as 'empty' for required?
>
>
>Thanks in advance.

Not sure I understand but why not filter out the '0' option from the ng-options in the first place ? Failing that then you could use a custom validator,