I am currently building a form that contains an input type=date and a select which allows users to chose a location. Depending on the location, the time zone changes and with it the allowed date range.
To validate, I have used Ecto.Changeset.cast({data, types}, params, Map.keys(types)) which uses a custom validator to check the permitted date range. Then I add Map.put(:action, :validate).

Unfortunately after the time zone changes LiveView does not show the errors on my input type=date, until I manually click the date selector element. This is most likely a feature that validation is not shown until a user has edited an input field, however in my case this behaviour would be desired. It does not seem that the changeset is different after I click into the date field, so this seems to be tracked somewhere else in LiveView. How can I instruct liveview to show the errors for this field in the changeset?

EDIT: I found the mechanism using the phx-feedback-for-hook and the phx-no-feedback-class as documented on the Form bindings page. My workaround now is to not use the core component, but just past the content avoiding the phx-feedback-for. Not a nice solution though. How could this be done properly?