How to validate a change operation from an input element

[ruimgoncalves]

Hi

I have a model fetched from a database query, this model has a observation field that has a validation rule of min_length : 5
I attached this database field to an input element.

<input value="{{_page.row.observation}}" />

When I edit this input text and enter a value that fails validation, an error is thrown in the server, and the input value is "rolled back".

Is there a way to handle this error on the client side, maybe set the invalid property of the input to the error message thrown by the server?

Best regards