I have the following working code:
<input
value="order.value"
name="orderValue"
ng-pattern="/^[0-9]{0,20}$/"
handle-save="update()">
</input>
<div
class="text-primary
icon-exclamation-sign"
ng-show="form.value.$error.pattern">
Only numbers are allowed
</div>
Is it possible to trigger a bootstrap popover instead of "Only numbers are allowed"? It seems like it will only be triggered by a mouse click or hover ...