I have a Dash app running these versions:
dash==1.19.0 dash-core-components==1.15.0 dash-daq==0.4.0 dash-html-components==1.1.2 dash-renderer==1.9.0 dash-table==4.11.2
I noticed a difference between the behaviour of DatePickerRange and DatePickerSingle when invalid values are entered by the user.
DatePickerRange : When the value can’t be parsed (ex.: “2021-03-0” (which happens whenever we change the value by deleting a character to change it)) or the value is outside of the allowed range (defined by
max_date_allowed), no callback is fired and, if the user focuses out of the element, the last valid date comes back.
DatePickerSingle : If the value can’t be parsed (that is as soon as the user deleted a character to replace it) or is outside of the allowed range, a callback is fired with
None as the value for the
The behaviour of DatePickerRange is preferable as we don’t have to deal with the null value downstream.
Is there a reason why the behavior of DatePickerSingle is different?
Thanks for you help and for the great product!