Is it possible to error check in a Lovelace UI?
I’ve set up two input.datetime helpers that are being used to identify the start and end date of a vacation period. Users select the desired dates, start and finish, from an entities card on a Lovelace panel. In turn these dates are used to changes how various entities in the house function.
I foresee a situation where a user could input a start date that is later than an end date. Or vise versa. Is there anything I can do from a coding perspective to alert users to this type of error and to ensure the end date of the selected vacation period is always later than the selected start date?