How ng-message is connected to model, and how can I show the message using ng-message?

Question

In this plunk the objective is to show an error message based on validation in the controller (instead of the built-ins required or min-length). Th

Answer 1

The more proper way to do this in controller is to use $setValidity

if(a !== b){
    form.inputName.$setValidity('custom-err', false);
} else {
    form.inputName.$setValidity('custom-err', true);
}

form.$setSubmitted();