Ng-select: Required validation without Reative Forms

[penihel]

How do a validation without Reative forms. I did not find a demo. I tried this:

<ng-select [items]="serverSideFilterItems"
           bindLabel="label"
           bindValue="id"
           required
           (change)="onChange($event)"
           [notFoundText]="'Nenhum resultado encontrado'"
           [typeToSearchText]="'Digite para pesquisar'"
           [typeahead]="itemsTypeahead">
</ng-select>

But, dont work it. The validation state never chagnes

[varnastadeus]

@penihel it does work, if you inspect element you would see ng-invalid. It just doesn't have any default style for that. You need to set it by yourself

[davidoween]

It happens exactly the same. That same example does not work. the input class is ng-valid

[varnastadeus]

@davidoween add plnkr to see what are you doing wrong.

[dannygoncalves]

@varnastadeus what happens if you don't wanna add any style but instead display a message?
Can't access to the error state on ng-select.