How to validate TimeWithZone model attribute

Rails
1

I try to validate the format of a date field but as soon a user set a
wrong date format in the form, the date (TimeWithZone) is set to nil so
I can’t validate the format.

Any suggestions?

2

Rémi Gagnon wrote:

I try to validate the format of a date field but as soon a user set a
wrong date format in the form, the date (TimeWithZone) is set to nil so
I can’t validate the format.

Any suggestions?

I’m surprised to see there is no response to my issue. Is it enough
clear?

Need you help.