Help with default datetime field

[maxx (Maxime Richez)]

Hi,

In a custom model, i’m using a datetime field for calendar event.
How to set a default planned date to have today as date and ‘00:00:00’ as time ?

I try such code:

@classmethod                                                                                     
def default_planned_date(cls):                                                                                                                  
    return dt.datetime.now().replace(hour=0, minute=0, second=0,                                 
        microsecond=0)

But I have ‘01:00:00’ instead of ‘00:00:00’ as time

When returning datetime.now()

@classmethod                                                                                     
def default_planned_date(cls):                                                                                                                  
    return dt.datetime.now()

Then time is correct…

Any idea ?

[ced (Cédric Krier)]

This is because on server side, the datetime are always in UTC but on the client side the datetime is rendered in the timezone of the OS.

So I do not know what you want to represent but you should consider:

• is it really a fixed point in time, so you must use a datetime but set time part to 0 has no real meaning
• is it a conventional time of a date, so it is probably a date and a time fields.

[maxx (Maxime Richez)]

Thanks for the explanation.

We have 2 types of shipment events:

• We don’t know what time it should be delivered/shipped, so we don’t care about time to have an “all day event” (ics calendar event with only a dtstart without time)
• The carrier warns us about the delivery/shipping time so we need the time to have the event at the correct time in the calendar (there’s a function field that define an “end” with a 1 hour interval from specified time) (ics calendar event with dtstart and dtend)

Probably, I should have two distinct fields : date and time. Time field will be invisible in case of an “All day event” (boolean field)

[maxx (Maxime Richez)]

Anyway, why is the time “now” with the correct timezone and the “forced” time to midnight with 1 hour more ?

[ced (Cédric Krier)]

Because now is now in every timezones.