Create_date in list views Sao client hangs

Support Developer
1

Hi,
the moment I use create_date, the internal field in list view, the view will not load, and the clients shows the “processing” note. There is no error logged. even if I wrap the crate date inside a function field

created_at = fields.Function(
    fields.DateTime("Created At"),
    'get_created_at',
)

def get_created_at(self, name):
    return self.create_date

the behavior persists. Intended, wrong approach, bug?
Thanks in advance
Regards Jakob

2

There is no datetime widget on tree view, you must define the column either with a date or time widget.

3

I’m wondering if won’t be a good idea to add a datetime widget which just adds to columns with date and time. Or which is the problem in implementing it?

4

  • In 2010, Tryton did have a combined DateTime widget in editable list views. #1691 fixed it so both portions could be edited.

  • In 2015, #4457 deliberately removed the list datetime widget from both clients. The commit explicitly says to use separate date and time widgets.

  • The modules were then migrated to two occurrences of the same field—one date, one time.

  • #5120 reported essentially the same create_date problem in 2015.

  • #7048 explicitly requested adding a datetime widget
    back to list views in 2018. It was closed because the widget had intentionally been removed.

  • #7108, still open, describes the exact current discrepancy: Sao crashes silently and GTK errors when a datetime is used in a tree. Sergi suggested removing datetime from the view schema, but that was never done—datetime is still accepted by trytond/trytond/ir/ui/tree.rnc:27.

  • Most recently, #14645 explicitly uses “datetime displayed with date and time widgets” as the example for showing one field twice. The related column-width handling was fixed in 2026. #14832 did the same for optional-column state.