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- Set the OS in a timezone such as the current day is different from the
day in UTC (e.g. America/Nome before 10:00 AM or Australia/Melbourne
after 3:00 PM)
- Open any datepicker
- The 'little triangle' indicating the current day is wrongly set (one
day before or after)
Knowing that Odoo always creates momentjs date and datetime with the
`UTC` flag set to `true`, the `bootstrap-datetimepicker` does something
which seems inconsistent.
First, it retrieves the `viewDate`, and sets it to the beginning of the
month and week in:
https://github.com/odoo/odoo/blob/1c6c504215f3ef09e6336c92c9d350e87599eaa1/addons/web/static/lib/bootstrap-datetimepicker/src/js/bootstrap-datetimepicker.js#L725
In this part, it is important to note that each `startOf` functions
called sets the hours/minutes/seconds to zero. It means that the
reference time is changed.
Then, it iterates on this newly created date, and determines `today` by
comparing it to `getMoment()` in:
https://github.com/odoo/odoo/blob/1c6c504215f3ef09e6336c92c9d350e87599eaa1/addons/web/static/lib/bootstrap-datetimepicker/src/js/bootstrap-datetimepicker.js#L748
However, `getMoment()` returns the current date and time, but with the
`UTC` flag set to `false`.
Therefore, we compare a UTC datetime on which the reference time has
been changed to a non-UTC datetime, which fails to give the appropriate
current day.
There are two approaches to solve this. The first possibility is to
change the way Odoo defines momentjs dates and datetimes, maybe by
removing the `UTC` flag at creation. This sounds like a bad idea, since
other widgets or views (such as the calendar or the pivot view) make use
of them. This is likely to introduce a bunch of new issues with TZ in
these views. The second approach is patching the library to fit our use.
Although we usually don't do such a thing, this allows to specifically
solve this use case, and in particular placing the 'small triangle' at
the appropriate date without impacting any other part of the system or
the library. It can be easily performed by comparing the dates and the
months to make it work.
opw-1915251
closes odoo/odoo#30538
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Before this fix, there was an issue when you changed the value of
a datetime field by editing direclty the input (without using the
datepicker popup).
If this value was equal to the offset of your timezone,
the new value wasn't saved. The problem was that no event was
triggered by the 'bootstrap-datetimepicker' lib because it
considered that the old datetime and the new datatime were the
same...
In odoo JS, we always manipulate UTC moment objects and we
manually add the timezone offset at rendering (we mainly do that
for testing purposes). When the offset is added, calling format()
on the moment object doesn't convert the datetime to the browser
timezone because it's flagged as being UTC.
The datepicker lib creates moment objects in the browser timezone.
So comparing the ones it creates with the one given by Odoo is
like comparing apples and oranges, and it gives wrong results
when the datetimes differ by the exact timezone offset. So in this
case, no 'datetime change' is triggered by the lib.
We could fix this by wrapping moment objects into some kind of
OdooDate class and stop manually adding the timezone offset, but
this would involve a refactoring that can only be done in master.
Instead, we prefered to patch the lib to ignore the comparison
between UTC and non-UTC objects, as this is the safest way we
find to fix this issue in stable version.
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There were two main problems with the datepicker since the lib was
updated:
- it appeared broken in the search view "Filters" menu
- it did not overflow the parent which scrolls
Indeed, before the update, the datepicker was placed in the <body/>.
Now this is a lib option. Unfortunately, the option is broken (I don't
know why they broke it since it worked before the lib update...). As the
lib does not expose its internal functions, the only found workaround was
to patch the lib code itself.
opw-745311
opw-745625
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from 3.0.3 to 4.17.42
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lazily load locale
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